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c5628a2af8
linux-next/drivers/usb/host
History
Mathias Nyman c5628a2af8 xhci: remove endpoint ring cache 
Anurag Kumar Vulisha reported several issues with xhci endpoint
ring caching.

31 Rings are cached per device before a ring is freed.
These cached rings are not used as default if a new ring is needed.
They are only used if the driver fails to allocate memory for a ring.

The current ring cache is more a reason to why we run out memory than a
help when we actually do so.

Anurag Kumar Vulisha tried to use cached rings as a first option and
found new issues with cached ring initialization.
Cached rings were first zeroed and then manually reinitialized with link
trbs etc, but forgetting to set some important bits like cycle toggle bit.

Remove the ring cache completely as it's a faulty premature optimization
eating memory

Reported-by: Anurag Kumar Vulisha <anuragku@xilinx.com>
Tested-by: Anurag Kumar Vulisha <anuragku@xilinx.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-06-15 22:17:46 +02:00
..
whci whci: Remove deprecated create_singlethread_workqueue 2016-08-15 16:25:58 +02:00
bcma-hcd.c USB: bcma: drop Northstar PHY 2.0 initialization code 2016-09-27 12:20:17 +02:00
ehci-atmel.c usb: ehci-atmel: use __maybe_unused to hide pm functions 2016-03-03 20:37:41 -08:00
ehci-dbg.c usb: add CONFIG_USB_PCI for system have both PCI HW and non-PCI based USB HW 2017-03-17 13:16:56 +09:00
ehci-exynos.c usb: host: ehci-exynos: Handle return value of clk_prepare_enable 2017-06-13 10:48:24 +02:00
ehci-fsl.c usb: ehci: fsl: use bus->sysdev for DMA configuration 2017-03-23 08:20:21 +01:00
ehci-fsl.h
ehci-grlib.c
ehci-hcd.c usb: host: Remove remaining pci_pool in comments 2017-03-16 18:03:31 +09:00
ehci-hub.c fsl/usb: Workarourd for USB erratum-A005697 2016-12-05 15:13:58 +01:00
ehci-mem.c usb: ehci: use bus->sysdev for DMA configuration 2017-03-23 08:20:21 +01:00
ehci-msm.c usb: host: ehci-msm: Conditionally call ehci suspend/resume 2016-06-07 22:15:25 -07:00
ehci-mv.c
ehci-mxc.c
ehci-omap.c usb/host/: const data must use __initconst not __initdata 2016-04-28 12:35:36 -07:00
ehci-orion.c usb: orion-ehci: Add support for the Armada 3700 2017-03-17 13:32:59 +09:00
ehci-pci.c USB: EHCI: merge all cases that disable the IO watchdog 2016-10-24 14:36:25 +02:00
ehci-platform.c USB: ehci-platform: fix companion-device leak 2017-05-17 11:52:44 +02:00
ehci-pmcmsp.c
ehci-ppc-of.c
ehci-ps3.c
ehci-q.c usb: host: ehci: remove unnecessary max_packet() macro 2016-11-03 10:38:24 +02:00
ehci-sched.c usb: host: remove unnecessary null check 2017-05-17 12:20:53 +02:00
ehci-sh.c
ehci-spear.c usb/host/: const data must use __initconst not __initdata 2016-04-28 12:35:36 -07:00
ehci-st.c usb: host: ehci-st: Inform the reset framework that our reset line may be shared 2016-06-30 07:44:21 +01:00
ehci-sysfs.c
ehci-tegra.c usb: host: ehci-tegra: Avoid getting the same reset twice 2016-06-07 22:15:25 -07:00
ehci-tilegx.c
ehci-timer.c usb: Make use of ktime_* comparison functions 2017-06-03 18:08:04 +09:00
ehci-w90x900.c USB: EHCI: ehci-w90x900: remove unuseful functions 2016-11-29 17:36:43 +01:00
ehci-xilinx-of.c
ehci.h fsl/usb: Workarourd for USB erratum-A005697 2016-12-05 15:13:58 +01:00
fhci-dbg.c
fhci-hcd.c usb: host: fhci-hcd: don't print on ENOMEM 2016-08-30 19:17:37 +02:00
fhci-hub.c
fhci-mem.c
fhci-q.c
fhci-sched.c USB: FHCI: avoid redundant condition 2016-05-09 13:08:46 +02:00
fhci-tds.c
fhci.h
fotg210-hcd.c usb: Make use of ktime_* comparison functions 2017-06-03 18:08:04 +09:00
fotg210.h
fsl-mph-dr-of.c fsl/usb: Workarourd for USB erratum-A005697 2016-12-05 15:13:58 +01:00
hwa-hc.c
imx21-dbg.c
imx21-hcd.c
imx21-hcd.h
isp116x-hcd.c
isp116x.h
isp1362-hcd.c usb: Convert pr_warning to pr_warn 2016-11-03 10:38:36 +02:00
isp1362.h
Kconfig usb: host: ohci-omap3: Remove driver in favor of ohci-platform 2017-06-03 18:08:05 +09:00
Makefile usb: host: ohci-omap3: Remove driver in favor of ohci-platform 2017-06-03 18:08:05 +09:00
max3421-hcd.c usb: host: max3421-hcd: don't print on ENOMEM 2016-08-30 19:17:37 +02:00
ohci-at91.c usb: ohci-at91: Do not drop unhandled USB suspend control requests 2017-03-09 10:22:08 +01:00
ohci-da8xx.c USB: ohci: da8xx: Resume the entire host controller 2016-11-29 17:31:36 +01:00
ohci-dbg.c
ohci-exynos.c usb: host: ohci-exynos: Decrese node refcount on exynos_ehci_get_phy() error paths 2017-01-10 17:00:42 +01:00
ohci-hcd.c ohci-pci: add qemu quirk 2017-03-23 08:13:21 +01:00
ohci-hub.c ohci-hub: fix typo in dbg_port macro 2017-02-10 12:20:57 +01:00
ohci-mem.c USB: OHCI: use dma_pool_zalloc 2016-11-21 17:33:40 +01:00
ohci-nxp.c USB: OHCI: nxp: fix code warnings 2016-12-08 17:50:09 +01:00
ohci-omap.c USB: ohci-omap: defer probe if PHY is missing 2017-01-10 17:00:41 +01:00
ohci-pci.c ohci-pci: add qemu quirk 2017-03-23 08:13:21 +01:00
ohci-platform.c usb: host: ohci-platform: Add support for omap3 and later 2017-06-03 18:08:04 +09:00
ohci-ppc-of.c
ohci-ps3.c
ohci-pxa27x.c USB: OHCI: ohci-pxa27x: remove useless functions 2016-12-05 16:32:51 +01:00
ohci-q.c USB: OHCI: Don't mark EDs as ED_OPER if scheduling fails 2016-06-07 22:15:25 -07:00
ohci-s3c2410.c USB: OHCI: ohci-s3c2410: remove useless functions 2016-12-05 16:32:51 +01:00
ohci-sa1111.c usb: ohci-sa1111: remove mach/hardware.h include 2016-08-30 19:24:59 +02:00
ohci-sm501.c
ohci-spear.c
ohci-st.c usb: host: ohci-st: Inform the reset framework that our reset line may be shared 2016-06-30 07:44:20 +01:00
ohci-tilegx.c
ohci-tmio.c
ohci.h ohci-pci: add qemu quirk 2017-03-23 08:13:21 +01:00
oxu210hp-hcd.c usb: host: Remove remaining pci_pool in comments 2017-03-16 18:03:31 +09:00
oxu210hp.h
pci-quirks.c drivers/usb: Skip auto handoff for TI and RENESAS usb controllers 2016-11-07 10:12:22 +01:00
pci-quirks.h usb: add CONFIG_USB_PCI for system have both PCI HW and non-PCI based USB HW 2017-03-17 13:16:56 +09:00
r8a66597-hcd.c usb: r8a66597-hcd: select a different endpoint on timeout 2017-05-17 11:52:44 +02:00
r8a66597.h
sl811_cs.c
sl811-hcd.c
sl811.h
ssb-hcd.c
u132-hcd.c usb: host: u132-hcd: use list_for_each_entry 2016-01-24 20:55:33 -08:00
uhci-debug.c
uhci-grlib.c
uhci-hcd.c usb/uhci: Add support for Aspeed BMC SoCs 2017-05-25 14:30:13 +02:00
uhci-hcd.h usb/uhci: Add support for Aspeed BMC SoCs 2017-05-25 14:30:13 +02:00
uhci-hub.c
uhci-pci.c USB: UHCI: report non-PME wakeup signalling for Intel hardware 2016-11-11 16:32:35 -06:00
uhci-platform.c usb/uhci: Add support for Aspeed BMC SoCs 2017-05-25 14:30:13 +02:00
uhci-q.c
xhci-dbg.c usb: xhci: remove xhci_dbg_ctx() 2017-04-08 12:17:42 +02:00
xhci-ext-caps.h usb: host: xhci: remove unneded semicolon 2017-01-25 10:59:06 +01:00
xhci-hub.c xhci: Fix command ring stop regression in 4.11 2017-05-18 15:19:42 +02:00
xhci-mem.c xhci: remove endpoint ring cache 2017-06-15 22:17:46 +02:00
xhci-mtk-sch.c usb: host: xhci: purge GET_MAX_PACKET() 2016-11-03 10:38:22 +02:00
xhci-mtk.c usb: xhci: remove dummy extra_priv_size for size of xhci_hcd struct 2017-03-09 18:00:39 +01:00
xhci-mtk.h usb: xhci-mtk: add reference clock 2017-01-19 10:37:16 +01:00
xhci-mvebu.c usb: host: xhci: plat: change type of mvebu init_quirk() 2016-04-26 16:08:02 -07:00
xhci-mvebu.h usb: host: xhci: plat: change type of mvebu init_quirk() 2016-04-26 16:08:02 -07:00
xhci-pci.c xhci: apply PME_STUCK_QUIRK and MISSING_CAS quirk for Denverton 2017-05-18 15:19:41 +02:00
xhci-plat.c usb: host: xhci-plat: propagate return value of platform_get_irq() 2017-05-18 15:19:42 +02:00
xhci-plat.h usb: host: xhci-plat: add resume_quirk() 2017-04-19 19:59:17 +02:00
xhci-rcar.c usb: host: xhci-plat: set resume_quirk() for R-Car controllers 2017-04-19 19:59:17 +02:00
xhci-rcar.h usb: host: xhci-plat: set resume_quirk() for R-Car controllers 2017-04-19 19:59:17 +02:00
xhci-ring.c xhci: Add helper to get hardware dequeue pointer for stopped rings. 2017-06-03 18:02:58 +09:00
xhci-tegra.c usb: xhci: remove dummy extra_priv_size for size of xhci_hcd struct 2017-03-09 18:00:39 +01:00
xhci-trace.c
xhci-trace.h usb: xhci: add xhci_log_ring trace events 2017-04-08 12:17:41 +02:00
xhci.c xhci: remove endpoint ring cache 2017-06-15 22:17:46 +02:00
xhci.h xhci: remove endpoint ring cache 2017-06-15 22:17:46 +02:00