Stefan Richter 3e98eab46d ieee1394: sbp2: safer initialization of status fifo ... Sbp2's copy of the status fifo was cleared when management ORBs or new command ORBs were prepared. The latter had potential for a race condition if the block layer's soft IRQ and the 1394 LLD's interrupt handler ran on different CPUs. It would also yield wrong status if a command was completed with non-zero completion status before other commands that had zero completion status, and no new command was enqueued in the meantime. Now, the status buffer is cleared right before it is written. Thus it ends up in the following simpler and safer access pattern: - sbp2_alloc_device: allocates and implicitly clears once, - sbp2_handle_status_write: clears, writes, and reads, - sbp2_query_logins, sbp2_login_device, sbp2_reconnect_device: read. The latter three do not race with sbp2_handle_status_write because of how the protocol works. As a tiny optimization, the first two quadlets of the status never need to be cleared. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>		2006-09-17 19:29:22 +02:00
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.gitignore	gitignore: misc files	2006-01-01 22:21:50 +01:00
config_roms.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
config_roms.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
csr1212.c	ieee1394: add preprocessor constant for invalid csr address	2006-06-12 18:15:31 -04:00
csr1212.h	ieee1394: add preprocessor constant for invalid csr address	2006-06-12 18:15:31 -04:00
csr.c	[PATCH] ieee1394: fix calculation of csr->expire	2006-07-03 12:01:59 -04:00
csr.h	[PATCH] ieee1394: clean up declarations of hpsb_*_config_rom	2006-07-03 12:02:31 -04:00
dma.c	[PATCH] ieee1394: update #include directives in midlayer header files	2006-07-03 12:02:29 -04:00
dma.h	[PATCH] ieee1394: update #include directives in midlayer header files	2006-07-03 12:02:29 -04:00
dv1394-private.h	[PATCH] ieee1394: dv1394: sem2mutex conversion	2006-07-03 12:02:32 -04:00
dv1394.c	[PATCH] ieee1394: dv1394: sem2mutex conversion	2006-07-03 12:02:32 -04:00
dv1394.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
eth1394.c	ieee1394: remove #include <asm/semaphore.h>	2006-09-17 19:18:50 +02:00
eth1394.h	ieee1394: add preprocessor constant for invalid csr address	2006-06-12 18:15:31 -04:00
highlevel.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
highlevel.h	[PATCH] ieee1394: update #include directives in midlayer header files	2006-07-03 12:02:29 -04:00
hosts.c	ieee1394: shrink tlabel pools, remove tpool semaphores	2006-09-17 19:17:13 +02:00
hosts.h	ieee1394: shrink tlabel pools, remove tpool semaphores	2006-09-17 19:17:13 +02:00
ieee1394_core.c	ieee1394: remove #include <asm/semaphore.h>	2006-09-17 19:18:50 +02:00
ieee1394_core.h	ieee1394: remove #include <asm/semaphore.h>	2006-09-17 19:18:50 +02:00
ieee1394_hotplug.h	[PATCH] ieee1394: remove redundant code from ieee1394_hotplug.h	2006-07-03 12:02:30 -04:00
ieee1394_transactions.c	ieee1394: shrink tlabel pools, remove tpool semaphores	2006-09-17 19:17:13 +02:00
ieee1394_transactions.h	ieee1394: shrink tlabel pools, remove tpool semaphores	2006-09-17 19:17:13 +02:00
ieee1394_types.h	ieee1394: shrink tlabel pools, remove tpool semaphores	2006-09-17 19:17:13 +02:00
ieee1394-ioctl.h	[PATCH] ieee1394: coding style and comment fixes in midlayer header files	2006-07-03 12:02:28 -04:00
ieee1394.h	[PATCH] ieee1394: coding style and comment fixes in midlayer header files	2006-07-03 12:02:28 -04:00
iso.c	[PATCH] ieee1394: update #include directives in midlayer header files	2006-07-03 12:02:29 -04:00
iso.h	[PATCH] ieee1394: update #include directives in midlayer header files	2006-07-03 12:02:29 -04:00
Kconfig	[PATCH] ieee1394: nodemgr: do not peek into struct semaphore	2006-06-25 10:00:54 -07:00
Makefile	Remove amdtp, cmp drivers.	2005-11-18 00:16:26 -05:00
nodemgr.c	ieee1394: shrink tlabel pools, remove tpool semaphores	2006-09-17 19:17:13 +02:00
nodemgr.h	ieee1394: shrink tlabel pools, remove tpool semaphores	2006-09-17 19:17:13 +02:00
ohci1394.c	ieee1394: merge from Linus	2006-09-17 18:19:31 +02:00
ohci1394.h	ohci1394: set address range properties	2006-06-12 18:13:32 -04:00
oui2c.sh	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
oui.db	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
pcilynx.c	[PATCH] irq-flags: firewire: Use the new IRQF_ constants	2006-07-02 13:58:50 -07:00
pcilynx.h	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
raw1394-private.h	[PATCH] ieee1394: raw1394: remove redundant counting semaphore	2006-07-03 12:02:33 -04:00
raw1394.c	[PATCH] ieee1394: raw1394: remove redundant counting semaphore	2006-07-03 12:02:33 -04:00
raw1394.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
sbp2.c	ieee1394: sbp2: safer initialization of status fifo	2006-09-17 19:29:22 +02:00
sbp2.h	ieee1394: sbp2: discard return value of sbp2_link_orb_command	2006-09-17 19:29:01 +02:00
video1394.c	[PATCH] ieee1394: update #include directives in midlayer header files	2006-07-03 12:02:29 -04:00
video1394.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00