Commit Graph

903288 Commits

Author SHA1 Message Date
Christoph Hellwig
ff27668ce8 bcache: pass the make_request methods to blk_queue_make_request
bcache is the only driver not actually passing its make_request
methods to blk_queue_make_request, but instead just sets them up
manually a little later.  Make bcache follow the common way of
setting up make_request based queues.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-27 10:23:43 -06:00
Christoph Hellwig
8d96a1117c null_blk: use blk_mq_init_queue_data
Use the new blk_mq_init_queue_data instead of open coding the queue
allocation and initialization.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-27 10:23:43 -06:00
Christoph Hellwig
2f227bb999 block: add a blk_mq_init_queue_data helper
This allows a driver to pass a queuedata member before ->init_hctx is
called.  null_blk currently open codes this logic, but I'd rather have
it in the core to ease future maintainance.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-27 10:23:43 -06:00
Linus Torvalds
7bf8df68cb drm fixes for 5.6-rc8/final
radeon/amdgpu/dma-buf:
 - sg list fixes
 
 scheduler:
 - oops fix
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Merge tag 'drm-fixes-2020-03-27' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Pretty quiet: some minor sg mapping fixes for 3 drivers, and a single
  oops fix for the scheduler. I'm hoping nobody tries to send me a fixes
  pull today but I'll keep an eye out of the weekend.

  radeon/amdgpu/dma-buf:
   - sg list fixes

  scheduler:
   - oops fix"

* tag 'drm-fixes-2020-03-27' of git://anongit.freedesktop.org/drm/drm:
  drm/scheduler: fix rare NULL ptr race
  drm/radeon: fix scatter-gather mapping with user pages
  drm/amdgpu: fix scatter-gather mapping with user pages
  drm/prime: use dma length macro when mapping sg
2020-03-27 09:21:52 -07:00
Christoph Hellwig
348e114bbd block: move the ->devnode callback to struct block_device_operations
There really isn't any good reason to stash a method directly into
struct gendisk.  Move it together with the other block device
operations.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-27 09:50:05 -06:00
Xiaoguang Wang
3d9932a8b2 io_uring: cleanup io_alloc_async_ctx()
Cleanup io_alloc_async_ctx() a bit, add a new __io_alloc_async_ctx(),
so io_setup_async_rw() won't need to check whether async_ctx is true
or false again.

Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-27 08:54:06 -06:00
Helge Deller
ededa081ed parisc: Fix defconfig selection
Fix the recursive loop when running "make ARCH=parisc defconfig".

Fixes: 84669923e1 ("parisc: Regenerate parisc defconfigs")
Noticed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Helge Deller <deller@gmx.de>
2020-03-27 15:37:24 +01:00
Dirk Mueller
e33a814e77 scripts/dtc: Remove redundant YYLOC global declaration
gcc 10 will default to -fno-common, which causes this error at link
time:

  (.text+0x0): multiple definition of `yylloc'; dtc-lexer.lex.o (symbol from plugin):(.text+0x0): first defined here

This is because both dtc-lexer as well as dtc-parser define the same
global symbol yyloc. Before with -fcommon those were merged into one
defintion. The proper solution would be to to mark this as "extern",
however that leads to:

  dtc-lexer.l:26:16: error: redundant redeclaration of 'yylloc' [-Werror=redundant-decls]
   26 | extern YYLTYPE yylloc;
      |                ^~~~~~
In file included from dtc-lexer.l:24:
dtc-parser.tab.h:127:16: note: previous declaration of 'yylloc' was here
  127 | extern YYLTYPE yylloc;
      |                ^~~~~~
cc1: all warnings being treated as errors

which means the declaration is completely redundant and can just be
dropped.

Signed-off-by: Dirk Mueller <dmueller@suse.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
[robh: cherry-pick from upstream]
Cc: stable@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-27 08:31:13 -06:00
Yubo Xie
749da8ca97 clocksource/drivers/hyper-v: Make sched clock return nanoseconds correctly
The sched clock read functions return the HV clock (100ns granularity)
without converting it to nanoseconds.

Add the missing conversion.

Fixes: bd00cd52d5 ("clocksource/drivers/hyperv: Add Hyper-V specific sched clock function")
Signed-off-by: Yubo Xie <yuboxie@microsoft.com>
Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20200327021159.31429-1-Tianyu.Lan@microsoft.com
2020-03-27 12:27:45 +01:00
Linus Torvalds
f3e69428b5 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:

 - a fix to generate proper timestamps on key autorepeat events that
   were broken recently

 - a fix for Synaptics driver to only activate reduced reporting mode
   when explicitly requested

 - a new keycode for "selective screenshot" function

 - other assorted fixes

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: fix stale timestamp on key autorepeat events
  Input: move the new KEY_SELECTIVE_SCREENSHOT keycode
  Input: avoid BIT() macro usage in the serio.h UAPI header
  Input: synaptics-rmi4 - set reduced reporting mode only when requested
  Input: synaptics - enable RMI on HP Envy 13-ad105ng
  Input: allocate keycode for "Selective Screenshot" key
  Input: tm2-touchkey - add support for Coreriver TC360 variant
  dt-bindings: input: add Coreriver TC360 binding
  dt-bindings: vendor-prefixes: Add Coreriver vendor prefix
  Input: raydium_i2c_ts - fix error codes in raydium_i2c_boot_trigger()
2020-03-26 20:49:44 -07:00
Marek Vasut
8262e6f9b1 net: ks8851-ml: Fix IO operations, again
This patch reverts 5829210483 ("net: ks8851-ml: Fix 16-bit IO operation")
and edacb098ea ("net: ks8851-ml: Fix 16-bit data access"), because it
turns out these were only necessary due to buggy hardware. This patch adds
a check for such a buggy hardware to prevent any such mistakes again.

While working further on the KS8851 driver, it came to light that the
KS8851-16MLL is capable of switching bus endianness by a hardware strap,
EESK pin. If this strap is incorrect, the IO accesses require such endian
swapping as is being reverted by this patch. Such swapping also impacts
the performance significantly.

Hence, in addition to removing it, detect that the hardware is broken,
report to user, and fail to bind with such hardware.

Fixes: 5829210483 ("net: ks8851-ml: Fix 16-bit IO operation")
Fixes: edacb098ea ("net: ks8851-ml: Fix 16-bit data access")
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: David S. Miller <davem@davemloft.net>
Cc: Lukas Wunner <lukas@wunner.de>
Cc: Petr Stetiar <ynezz@true.cz>
Cc: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-26 20:20:19 -07:00
Dave Airlie
c4b979ebca Merge tag 'amd-drm-fixes-5.6-2020-03-26' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
amd-drm-fixes-5.6-2020-03-26:

Scheduler:
- Fix a race condition that could result in a segfault

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200326144538.3937-1-alexander.deucher@amd.com
2020-03-27 13:03:17 +10:00
Dave Airlie
5117c363eb drm-misc-fixes for v5.6:
- SG fixes for prime, radeon and amdgpu.
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Merge tag 'drm-misc-fixes-2020-03-26' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

drm-misc-fixes for v5.6:
- SG fixes for prime, radeon and amdgpu.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ef10e822-76dd-125d-ec1f-9a78c5f76bc3@linux.intel.com
2020-03-27 12:33:23 +10:00
Atish Patra
2191b4f298
RISC-V: Move all address space definition macros to one place
We get the following compilation error if CONFIG_SPARSEMEM_VMEMMAP is set.

---------------------------------------------------------------
./arch/riscv/include/asm/pgtable-64.h: In function ‘pud_page’:
./include/asm-generic/memory_model.h:54:29: error: ‘vmemmap’ undeclared
(first use in this function); did you mean ‘mem_map’?
 #define __pfn_to_page(pfn) (vmemmap + (pfn))
                             ^~~~~~~
./include/asm-generic/memory_model.h:82:21: note: in expansion of
macro ‘__pfn_to_page’

 #define pfn_to_page __pfn_to_page
                     ^~~~~~~~~~~~~
./arch/riscv/include/asm/pgtable-64.h:70:9: note: in expansion of macro
‘pfn_to_page’
  return pfn_to_page(pud_val(pud) >> _PAGE_PFN_SHIFT);
---------------------------------------------------------------

Fix the compliation errors by moving all the address space definition
macros before including pgtable-64.h.

Fixes: 8ad8b72721 (riscv: Add KASAN support)

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2020-03-26 19:26:11 -07:00
Dmitry Torokhov
4134252ab7 Input: fix stale timestamp on key autorepeat events
We need to refresh timestamp when emitting key autorepeat events, otherwise
they will carry timestamp of the original key press event.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=206929
Fixes: 3b51c44bd6 ("Input: allow drivers specify timestamp for input events")
Cc: stable@vger.kernel.org
Reported-by: teika kazura <teika@gmx.com>
Tested-by: teika kazura <teika@gmx.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2020-03-26 17:05:08 -07:00
David Howells
9efcc4a129 afs: Fix unpinned address list during probing
When it's probing all of a fileserver's interfaces to find which one is
best to use, afs_do_probe_fileserver() takes a lock on the server record
and notes the pointer to the address list.

It doesn't, however, pin the address list, so as soon as it drops the
lock, there's nothing to stop the address list from being freed under
us.

Fix this by taking a ref on the address list inside the locked section
and dropping it at the end of the function.

Fixes: 3bf0fb6f33 ("afs: Probe multiple fileservers simultaneously")
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-03-26 16:04:29 -07:00
Linus Torvalds
60268940cd A patch for a rather old regression in fullness handling and two memory
leak fixes, marked for stable.
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Merge tag 'ceph-for-5.6-rc8' of git://github.com/ceph/ceph-client

Pull ceph fixes from Ilya Dryomov:
 "A patch for a rather old regression in fullness handling and two
  memory leak fixes, marked for stable"

* tag 'ceph-for-5.6-rc8' of git://github.com/ceph/ceph-client:
  ceph: fix memory leak in ceph_cleanup_snapid_map()
  libceph: fix alloc_msg_with_page_vector() memory leaks
  ceph: check POOL_FLAG_FULL/NEARFULL in addition to OSDMAP_FULL/NEARFULL
2020-03-26 15:44:41 -07:00
Linus Torvalds
a53071bd34 x86 bug fixes.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "x86 bug fixes"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: X86: Narrow down the IPI fastpath to single target IPI
  KVM: LAPIC: Also cancel preemption timer when disarm LAPIC timer
  KVM: VMX: don't allow memory operands for inline asm that modifies SP
  KVM: LAPIC: Mark hrtimer for period or oneshot mode to expire in hard interrupt context
  KVM: SVM: Issue WBINVD after deactivating an SEV guest
  KVM: SVM: document KVM_MEM_ENCRYPT_OP, let userspace detect if SEV is available
  KVM: x86: remove bogus user-triggerable WARN_ON
2020-03-26 15:30:49 -07:00
Linus Torvalds
23cb8490c0 MAINTAINERS: fix bad file pattern
Testing 'parse-maintainers' due to the previous commit shows a bad file
pattern for the "TI VPE/CAL DRIVERS" entry in the MAINTAINERS file.

There's also a lot of mis-ordered entries, but I'm still a bit nervous
about the inevitable and annoying merge problems it would probably cause
to fix them up.

The MAINTAINERS file is one of my least favorite files due to being huge
and centralized, but fixing it is also horribly painful for that reason.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-03-26 15:12:19 -07:00
Joe Perches
5cdbec108f parse-maintainers: Do not sort section content by default
Add an --order switch to control section reordering.
Default for --order is off.

Change the default ordering to a slightly more sensible:

M:  Person acting as a maintainer
R:  Person acting as a patch reviewer
L:  Mailing list where patches should be sent
S:  Maintenance status
W:  URI for general information
Q:  URI for patchwork tracking
B:  URI for bug tracking/submission
C:  URI for chat
P:  URI or file for subsystem specific coding styles
T:  SCM tree type and location
F:  File and directory pattern
X:  File and directory exclusion pattern
N:  File glob
K:  Keyword - patch content regex

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-03-26 15:08:27 -07:00
Dmitry Torokhov
fbf66796a0 Input: move the new KEY_SELECTIVE_SCREENSHOT keycode
We should try to keep keycodes sequential unless there is a reason to leave
a gap in numbering, so let's move it from 0x280 to 0x27a while we still
can.

Fixes: 3b059da983 ("Input: allocate keycode for Selective Screenshot key")
Acked-by: Rajat Jain <rajatja@google.com>
Link: https://lore.kernel.org/r/20200326182711.GA259753@dtor-ws
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2020-03-26 12:55:17 -07:00
Anup Patel
bd6f20333c
RISC-V: Only select essential drivers for SOC_VIRT config
The kconfig select causes build failues for SOC_VIRT config becaus
we are selecting lot of VIRTIO drivers without selecting all required
dependencies.

Better approach is to only select essential drivers from SOC_VIRT
config option and enable required VIRTIO drivers using defconfigs.

Fixes: 759bdc1681 ("RISC-V: Add kconfig option for QEMU virt machine")
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2020-03-26 12:35:04 -07:00
David S. Miller
328f5bb993 We have the following fixes:
* drop data packets if there's no key for them anymore, after
    there had been one, to avoid sending them in clear when
    hostapd removes the key before it removes the station and
    the packets are still queued
  * check port authorization again after dequeue, to avoid
    sending packets if the station is no longer authorized
  * actually remove the authorization flag before the key so
    packets are also dropped properly because of this
  * fix nl80211 control port packet tagging to handle them as
    packets allowed to go out without encryption
  * fix NL80211_ATTR_CHANNEL_WIDTH outgoing netlink attribute
    width (should be 32 bits, not 8)
  * don't WARN in a CSA scenario that happens on some APs
  * fix HE spatial reuse element size calculation
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Merge tag 'mac80211-for-net-2020-03-26' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
We have the following fixes:
 * drop data packets if there's no key for them anymore, after
   there had been one, to avoid sending them in clear when
   hostapd removes the key before it removes the station and
   the packets are still queued
 * check port authorization again after dequeue, to avoid
   sending packets if the station is no longer authorized
 * actually remove the authorization flag before the key so
   packets are also dropped properly because of this
 * fix nl80211 control port packet tagging to handle them as
   packets allowed to go out without encryption
 * fix NL80211_ATTR_CHANNEL_WIDTH outgoing netlink attribute
   width (should be 32 bits, not 8)
 * don't WARN in a CSA scenario that happens on some APs
 * fix HE spatial reuse element size calculation
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-26 12:03:02 -07:00
Ido Schimmel
f6bf1bafdc mlxsw: spectrum_mr: Fix list iteration in error path
list_for_each_entry_from_reverse() iterates backwards over the list from
the current position, but in the error path we should start from the
previous position.

Fix this by using list_for_each_entry_continue_reverse() instead.

This suppresses the following error from coccinelle:

drivers/net/ethernet/mellanox/mlxsw//spectrum_mr.c:655:34-38: ERROR:
invalid reference to the index variable of the iterator on line 636

Fixes: c011ec1bbf ("mlxsw: spectrum: Add the multicast routing offloading logic")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-26 12:00:45 -07:00
Xu Wang
bcaeb886ad qlcnic: Fix bad kzalloc null test
In qlcnic_83xx_get_reset_instruction_template, the variable
of null test is bad, so correct it.

Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-26 11:44:22 -07:00
Linus Torvalds
9420e8ade4 Third RDMA 5.6 pull request
- Several MAINTAINERS updates
 
 - Memory leak regression in ODP
 
 - Several fixes for syzkaller related crashes. Google recently taught
   syzkaller to create the software RDMA devices
 
 - Crash fixes for HFI1
 
 - Several fixes for mlx5 crashes
 
 - Prevent unprivileged access to an unsafe mlx5 HW resource
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma fixes from Jason Gunthorpe:
 "A small set of late-rc patches, mostly fixes for various crashers,
  some syzkaller fixes and a mlx5 HW limitation:

   - Several MAINTAINERS updates

   - Memory leak regression in ODP

   - Several fixes for syzkaller related crashes. Google recently taught
     syzkaller to create the software RDMA devices

   - Crash fixes for HFI1

   - Several fixes for mlx5 crashes

   - Prevent unprivileged access to an unsafe mlx5 HW resource"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  RDMA/mlx5: Block delay drop to unprivileged users
  RDMA/mlx5: Fix access to wrong pointer while performing flush due to error
  RDMA/core: Ensure security pkey modify is not lost
  MAINTAINERS: Clean RXE section and add Zhu as RXE maintainer
  IB/hfi1: Ensure pq is not left on waitlist
  IB/rdmavt: Free kernel completion queue when done
  RDMA/mad: Do not crash if the rdma device does not have a umad interface
  RDMA/core: Fix missing error check on dev_set_name()
  RDMA/nl: Do not permit empty devices names during RDMA_NLDEV_CMD_NEWLINK/SET
  RDMA/mlx5: Fix the number of hwcounters of a dynamic counter
  MAINTAINERS: Update maintainers for HISILICON ROCE DRIVER
  RDMA/odp: Fix leaking the tgid for implicit ODP
2020-03-26 10:39:36 -07:00
Bartlomiej Zolnierkiewicz
bf89b0bf30 ata: make "libata.force" kernel parameter optional
Add ATA_FORCE config option (visible only if EXPERT config
option is enabled) and make "libata.force" kernel parameter
optional.

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
w/ CONFIG_ATA_FORCE=y:
  31983     572      40   32595    7f53 drivers/ata/libata-core.o
w/ CONFIG_ATA_FROCE=n:
  28958     316      32   29306    727a drivers/ata/libata-core.o

Suggested-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:20 -06:00
Bartlomiej Zolnierkiewicz
a0ccd2511b ata: move ata_eh_analyze_ncq_error() & co. to libata-sata.c
* move ata_eh_analyze_ncq_error() and ata_eh_read_log_10h() to
  libata-sata.c

* add static inline for ata_eh_analyze_ncq_error() for
  CONFIG_SATA_HOST=n case (link->sactive is non-zero only if
  NCQ commands are actually queued so empty function body is
  sufficient)

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  16164      18       0   16182    3f36 drivers/ata/libata-eh.o
after:
  15446      18       0   15464    3c68 drivers/ata/libata-eh.o

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:20 -06:00
Bartlomiej Zolnierkiewicz
a695de27fc ata: start separating SATA specific code from libata-eh.c
Start separating SATA specific code from libata-eh.c:

* move sata_async_notification() to libata-sata.c:

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  16243      18       0   16261    3f85 drivers/ata/libata-eh.o
after:
  16164      18       0   16182    3f36 drivers/ata/libata-eh.o

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:20 -06:00
Bartlomiej Zolnierkiewicz
15964ff728 ata: move ata_sas_*() to libata-sata.c
* un-inline:
  - ata_scsi_dump_cdb()
  - __ata_scsi_queuecmd()

* un-static:
  - ata_scsi_sdev_config()
  - ata_scsi_dev_config()
  - ata_scsi_dump_cdb()
  - __ata_scsi_queuecmd()

* move ata_sas_*() to libata-sata.c:

* add static inlines for CONFIG_SATA_HOST=n case for
  ata_sas_{allocate,free}_tag()

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  19137      23     576   19736    4d18 drivers/ata/libata-scsi.o
after:
  18330      23     576   18929    49f1 drivers/ata/libata-scsi.o

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:20 -06:00
Bartlomiej Zolnierkiewicz
ec811a94c5 ata: start separating SATA specific code from libata-scsi.c
Start separating SATA specific code from libata-scsi.c:

* un-static ata_scsi_find_dev()

* move following code to libata-sata.c:
  - SATA only sysfs device attributes handling
  - __ata_change_queue_depth()
  - ata_scsi_change_queue_depth()

* cover with CONFIG_SATA_HOST ifdef SATA only sysfs device
  attributes handling code and ATA_SHT_NCQ() macro in
  <linux/libata.h>

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  20702     105     576   21383    5387 drivers/ata/libata-scsi.o
after:
  19137      23     576   19736    4d18 drivers/ata/libata-scsi.o

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:20 -06:00
Bartlomiej Zolnierkiewicz
2b384ede71 ata: move sata_deb_timing_*() to libata-sata.c
* move sata_deb_timing_*() to libata-sata.c

* add static inline for sata_ehc_deb_timing() for
  CONFIG_SATA_HOST=n case

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  32158     572      40   32770    8002 drivers/ata/libata-core.o
after:
  32015     572      40   32627    7f73 drivers/ata/libata-core.o

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:20 -06:00
Bartlomiej Zolnierkiewicz
61a11986d3 ata: move ata_qc_complete_multiple() to libata-sata.c
* move ata_qc_complete_multiple() to libata-sata.c

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  32559     572      40   33171    8193 drivers/ata/libata-core.o
after:
  32162     572      40   32774    8006 drivers/ata/libata-core.o

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:20 -06:00
Bartlomiej Zolnierkiewicz
78c97c80d7 ata: move sata_link_hardreset() to libata-sata.c
* move sata_link_hardreset() to libata-sata.c

* add static inline for CONFIG_SATA_HOST=n case

* make sata_set_spd_needed() static

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  32724     572      40   33336    8238 drivers/ata/libata-core.o
after:
  32559     572      40   33171    8193 drivers/ata/libata-core.o

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:20 -06:00
Bartlomiej Zolnierkiewicz
9d3158f5cb ata: move sata_link_{debounce,resume}() to libata-sata.c
* move sata_link_{debounce,resume}() to libata-sata.c

* add static inline for CONFIG_SATA_HOST=n case (only one,
  for sata_link_resume() is needed)

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  32816     572      40   33428    8294 drivers/ata/libata-core.o
after:
  32724     572      40   33336    8238 drivers/ata/libata-core.o

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:19 -06:00
Bartlomiej Zolnierkiewicz
ab4117cf24 ata: move *sata_set_spd*() to libata-sata.c
* move *sata_set_spd*() to libata-sata.c

* add static inlines for CONFIG_SATA_HOST=n case

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  32842     572      40   33458    82ae drivers/ata/libata-core.o
after:
  32812     572      40   33428    8290 drivers/ata/libata-core.o

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:19 -06:00
Bartlomiej Zolnierkiewicz
6eab1bc0ee ata: move sata_scr_*() to libata-sata.c
* move sata_scr_*() to libata-sata.c

* add static inlines for CONFIG_SATA_HOST=n case

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  35642     572      40   36254    8d9e drivers/ata/libata-core.o
  16607      18       0   16625    40f1 drivers/ata/libata-eh.o
after:
  32846     572      40   33458    82b2 drivers/ata/libata-core.o
  16243      18       0   16261    3f85 drivers/ata/libata-eh.o

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:19 -06:00
Bartlomiej Zolnierkiewicz
7fe183c773 ata: start separating SATA specific code from libata-core.c
Start separating SATA specific code from libata-core.c:

* move following functions to libata-sata.c:
  - ata_tf_to_fis()
  - ata_tf_from_fis()
  - sata_link_scr_lpm()
  - ata_slave_link_init()
  - sata_lpm_ignore_phy_events()

* group above functions together in <linux/libata.h>

* include libata-sata.c in the build when CONFIG_SATA_HOST=y

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  37582     572      40   38194    9532 drivers/ata/libata-core.o
after:
  36762     572      40   37374    91fe drivers/ata/libata-core.o

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:19 -06:00
Bartlomiej Zolnierkiewicz
4c9029e7d0 ata: let compiler optimize out ata_eh_set_lpm() on non-SATA hosts
Add !IS_ENABLED(CONFIG_SATA_HOST) to ata_eh_set_lpm() to allow
compiler to optimize out the function for non-SATA configs (for
PATA hosts "ap && !ap->ops->set_lpm" condition is always true so
it's sufficient for the function to return zero).

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  17353      18       0   17371    43db drivers/ata/libata-eh.o
after:
  16607      18       0   16625    40f1 drivers/ata/libata-eh.o

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:19 -06:00
Bartlomiej Zolnierkiewicz
cba97ea18d ata: let compiler optimize out ata_dev_config_ncq() on non-SATA hosts
Add !IS_ENABLED(CONFIG_SATA_HOST) to ata_dev_config_ncq() to allow
compiler to optimize out the function for non-SATA configs.

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  37582     572      40   38194    9532 drivers/ata/libata-core.o
after:
  36462     572      40   37074    90d2 drivers/ata/libata-core.o

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:19 -06:00
Bartlomiej Zolnierkiewicz
7caa30ea82 ata: add CONFIG_SATA_HOST=n version of ata_ncq_enabled()
When CONFIG_SATA_HOST=n there are no NCQ capable host drivers
built so it is safe to hardwire ata_ncq_enabled() to always
return zero.

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  37820     572      40   38432    9620 drivers/ata/libata-core.o
  21040     105     576   21721    54d9 drivers/ata/libata-scsi.o
  17405      18       0   17423    440f drivers/ata/libata-eh.o
after:
  37582     572      40   38194    9532 drivers/ata/libata-core.o
  20702     105     576   21383    5387 drivers/ata/libata-scsi.o
  17353      18       0   17371    43db drivers/ata/libata-eh.o

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:19 -06:00
Bartlomiej Zolnierkiewicz
a9b2c120e3 ata: separate PATA timings code from libata-core.c
Separate PATA timings code from libata-core.c:

* add PATA_TIMINGS config option and make corresponding PATA
  host drivers (and ATA ACPI code) select it

* move following PATA timings code to libata-pata-timings.c:
  - ata_timing_quantize()
  - ata_timing_merge()
  - ata_timing_find_mode()
  - ata_timing_compute()

* group above functions together in <linux/libata.h>

* include libata-pata-timings.c in the build when PATA_TIMINGS
  config option is enabled

* cover ata_timing_cycle2mode() with CONFIG_ATA_ACPI ifdef (it
  depends on code from libata-core.c and libata-pata-timings.c
  while its only user is ATA ACPI)

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  39688     573      40   40301    9d6d drivers/ata/libata-core.o
after:
  37820     572      40   38432    9620 drivers/ata/libata-core.o

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:19 -06:00
Bartlomiej Zolnierkiewicz
4e16818704 ata: fix CodingStyle issues in PATA timings code
* fix the overly long line in ata_timing_quantize()

* use standard kernel CodingStyle in ata_timing_merge()

* do not use assignment in if condition in ata_timing_compute()

* fix non-standard comment style in ata_timing_compute()

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:18 -06:00
Bartlomiej Zolnierkiewicz
2b67a6d3a4 ata: remove EXPORT_SYMBOL_GPL()s not used by modules
Remove EXPORT_SYMBOL_GPL()s for functions used only by
the core libata code.

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  39838     573      40   40451    9e03 drivers/ata/libata-core.o
  21071     105     576   21752    54f8 drivers/ata/libata-scsi.o
  17519      18       0   17537    4481 drivers/ata/libata-eh.o
after:
  39688     573      40   40301    9d6d drivers/ata/libata-core.o
  21040     105     576   21721    54d9 drivers/ata/libata-scsi.o
  17405      18       0   17423    440f drivers/ata/libata-eh.o

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:18 -06:00
Bartlomiej Zolnierkiewicz
a52fbcfc7b ata: move EXPORT_SYMBOL_GPL()s close to exported code
Move EXPORT_SYMBOL_GPL()s close to exported code like it is
done in other kernel subsystems. As a nice side effect this
results in the removal of few ifdefs.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:18 -06:00
Bartlomiej Zolnierkiewicz
c8fa4f8e22 ata: optimize ata_scsi_rbuf[] size
Currently the maximum required size of the ata_scsi_rbuf[] is
576 bytes in ata_scsiop_inq_89() so modify ATA_SCSI_RBUF_SIZE
define accordingly.

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  20782     105    4096   24983    6197 drivers/ata/libata-scsi.o
after:
  20782     105     576   21463    53d7 drivers/ata/libata-scsi.o

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:18 -06:00
Bartlomiej Zolnierkiewicz
8ba5a45c99 ata: optimize struct ata_force_param size
Optimize struct ata_force_param size by:
- using u8 for cbl and spd_limit fields
- using u16 for lflags field

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  41064     573      40   41677    a2cd drivers/ata/libata-core.o
after:
  40654     573      40   41267    a133 drivers/ata/libata-core.o

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:18 -06:00
Bartlomiej Zolnierkiewicz
bbf5a0976d ata: use COMMAND_LINE_SIZE for ata_force_param_buf[] size
Use COMMAND_LINE_SIZE instead PAGE_SIZE for ata_force_param_buf[]
size as libata parameters buffer doesn't need to be bigger than
the command line buffer.

For many architectures this results in decreased libata-core.o
size (COMMAND_LINE_SIZE varies from 256 to 4096 while the minimum
PAGE_SIZE is 4096).

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  41064    4413      40   45517    b1cd drivers/ata/libata-core.o
after:
  41064     573      40   41677    a2cd drivers/ata/libata-core.o

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:18 -06:00
Bartlomiej Zolnierkiewicz
3353100136 ata: simplify ata_scsiop_inq_89()
Initialize rbuf[] directly instead of using ata_tf_to_fis(). This
results in simpler and smaller code. It also allows separating
ata_tf_to_fis() into SATA specific libata part in the future.

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  20824     105    4096   25025    61c1 drivers/ata/libata-scsi.o
after:
  20782     105    4096   24983    6197 drivers/ata/libata-scsi.o

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:18 -06:00
Bartlomiej Zolnierkiewicz
3f0998da55 sata_promise: use ata_cable_sata()
Use core helper instead of open-coding it.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:18 -06:00