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ac5166bcdb
linux/drivers/usb/host
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Sarah Sharp f2d9b991c5 xhci: Set scatter-gather limit to avoid failed block writes. 
Commit 35773dac5f "usb: xhci: Link TRB
must not occur within a USB payload burst" attempted to fix an issue
found with USB ethernet adapters, and inadvertently broke USB storage
devices.  The patch attempts to ensure that transfers never span a
segment, and rejects transfers that have more than 63 entries (or
possibly less, if some entries cross 64KB boundaries).

usb-storage limits the maximum transfer size to 120K, and we had assumed
the block layer would pass a scatter-gather list of 4K entries,
resulting in no more than 31 sglist entries:

http://marc.info/?l=linux-usb&m=138498190419312&w=2

That assumption was wrong, since we've seen the driver reject a write
that was 218 sectors long (of probably 512 bytes each):

Jan  1 07:04:49 jidanni5 kernel: [  559.624704] xhci_hcd 0000:00:14.0: Too many fragments 79, max 63
...
Jan  1 07:04:58 jidanni5 kernel: [  568.622583] Write(10): 2a 00 00 06 85 0e 00 00 da 00

Limit the number of scatter-gather entries to half a ring segment.  That
should be margin enough in case some entries cross 64KB boundaries.
Increase the number of TRBs per segment from 64 to 256, which should
result in ring segments fitting on a 4K page.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Reported-by: jidanni@jidanni.org
References: http://bugs.debian.org/733907
Fixes: 35773dac5f ('usb: xhci: Link TRB must not occur within a USB payload burst')
Cc: stable <stable@vger.kernel.org> # 3.12
2014-01-08 11:00:52 -08:00
..
whci usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
bcma-hcd.c DMA-API: usb: bcma: replace dma_set_mask()+dma_set_coherent_mask() with new helper 2013-10-31 14:48:34 +00:00
ehci-atmel.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ehci-dbg.c usb: Use dev_is_pci() to check whether it is pci device 2013-12-08 18:01:56 -08:00
ehci-exynos.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ehci-fsl.c USB: ehci-fsl: Use devm_ioremap_resource() 2013-12-18 16:33:47 -08:00
ehci-fsl.h
ehci-grlib.c USB: ehci-grlib: use dev_err() instead of printk() 2013-12-18 16:32:41 -08:00
ehci-hcd.c USB: kill #undef VERBOSE_DEBUG 2013-12-03 10:34:33 -08:00
ehci-hub.c ehci: no conditional compilation for interestingness 2013-12-03 10:25:22 -08:00
ehci-mem.c USB: EHCI: fix sparse errors 2013-10-19 14:08:04 -07:00
ehci-msm.c USB: ehci-msm: Add device tree support and binding information 2013-10-11 16:31:15 -07:00
ehci-mv.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ehci-mxc.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ehci-octeon.c USB: ehci-octeon: Use devm_ioremap_resource() 2013-12-18 16:34:20 -08:00
ehci-omap.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ehci-orion.c USB: ehci-orion: Use devm_*() functions 2013-12-18 16:33:47 -08:00
ehci-pci.c usb: ehci: use amd_chipset_type to filter for usb subsystem hang bug 2013-10-03 15:44:50 -07:00
ehci-platform.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ehci-pmcmsp.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ehci-ppc-of.c USB: ehci-ppc-of: use dev_err() instead of printk() 2013-12-18 16:32:41 -08:00
ehci-ps3.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ehci-q.c usb: kill DEBUG compile option 2013-12-03 10:34:33 -08:00
ehci-sched.c USB: EHCI: fix sparse errors 2013-10-19 14:08:04 -07:00
ehci-sead3.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ehci-sh.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ehci-spear.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ehci-sysfs.c USB: EHCI: use a bandwidth-allocation table 2013-10-11 16:45:43 -07:00
ehci-tegra.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ehci-tilegx.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ehci-timer.c
ehci-w90x900.c USB: ehci-w90x900: Use devm_ioremap_resource() 2013-12-18 16:35:11 -08:00
ehci-xilinx-of.c USB: ehci-xilinx-of: use dev_err() instead of printk() 2013-12-18 16:32:41 -08:00
ehci.h usb: kill DEBUG compile option 2013-12-03 10:34:33 -08:00
fhci-dbg.c
fhci-hcd.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
fhci-hub.c
fhci-mem.c
fhci-q.c
fhci-sched.c
fhci-tds.c
fhci.h
fotg210-hcd.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
fotg210.h fotg210: remove conditional compilation 2013-12-03 10:28:39 -08:00
fsl-mph-dr-of.c usb: host: fsl-mph-dr-of: Staticize local symbols 2013-09-17 11:06:57 -05:00
fusbh200-hcd.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
fusbh200.h fusb200h: always compile in debugfs support 2013-12-03 10:31:21 -08:00
hwa-hc.c usb: wusbcore: use USB_CTRL_SET_TIMEOUT and USB_CTRL_GET_TIMEOUT 2013-12-09 13:28:48 -08:00
imx21-dbg.c usb: kill DEBUG compile option 2013-12-03 10:34:33 -08:00
imx21-hcd.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
imx21-hcd.h usb: kill DEBUG compile option 2013-12-03 10:34:33 -08:00
isp116x-hcd.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
isp116x.h
isp1362-hcd.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
isp1362.h
isp1760-hcd.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
isp1760-hcd.h
isp1760-if.c
Kconfig usb: ohci: remove ep93xx bus glue platform driver 2013-10-29 16:43:37 -07:00
Makefile usb: kill DEBUG compile option 2013-12-03 10:34:33 -08:00
octeon2-common.c
ohci-at91.c USB: fix: ohci-at91 mismerge build error 2014-01-07 09:30:48 -08:00
ohci-da8xx.c USB: ohci-da8xx: Use devm_*() functions 2013-12-18 16:35:11 -08:00
ohci-dbg.c ohci: remove conditional compilation 2013-12-03 10:25:22 -08:00
ohci-exynos.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ohci-hcd.c USB: OHCI: Properly handle OHCI controller suspend 2013-12-08 17:53:17 -08:00
ohci-hub.c ohci: no conditional debugging in root hub hadling 2013-12-03 10:25:22 -08:00
ohci-jz4740.c USB: ohci-jz4740: Use devm_*() functions 2013-12-18 16:35:11 -08:00
ohci-mem.c
ohci-nxp.c USB: ohci-nxp: Use devm_clk_get() 2013-12-18 16:36:10 -08:00
ohci-octeon.c USB: ohci-octeon: Use devm_ioremap_resource() 2013-12-18 16:36:11 -08:00
ohci-omap3.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ohci-omap.c USB: ohci-omap: use dev_err() instead of printk() 2013-12-18 16:32:41 -08:00
ohci-pci.c usb: ohci: use amd_chipset_type to filter for SB800 prefetch 2013-10-03 15:44:51 -07:00
ohci-platform.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ohci-ppc-of.c USB: ohci-ppc-of: Use devm_ioremap_resource() 2013-12-18 16:36:10 -08:00
ohci-ps3.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ohci-pxa27x.c USB: ohci-pxa27x:Use devm_*() functions 2013-12-18 16:35:10 -08:00
ohci-q.c ohci: kill ohci_vdbg 2013-12-03 10:25:22 -08:00
ohci-s3c2410.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ohci-sa1111.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ohci-sm501.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ohci-spear.c USB: ohci-spear: Use devm_ioremap_resource() 2013-12-18 16:36:11 -08:00
ohci-tilegx.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ohci-tmio.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
ohci.h ohci: kill ohci_vdbg 2013-12-03 10:25:22 -08:00
oxu210hp-hcd.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
oxu210hp.h
pci-quirks.c Merge 3.12-rc6 into usb-next. 2013-10-19 13:19:07 -07:00
pci-quirks.h usb: ohci: use amd_chipset_type to filter for SB800 prefetch 2013-10-03 15:44:51 -07:00
r8a66597-hcd.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
r8a66597.h
sl811_cs.c
sl811-hcd.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
sl811.h
ssb-hcd.c DMA-API: usb: ssb-hcd: replace dma_set_mask()+dma_set_coherent_mask() with new helper 2013-10-31 14:48:36 +00:00
u132-hcd.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
uhci-debug.c usb: kill DEBUG compile option 2013-12-03 10:34:33 -08:00
uhci-grlib.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
uhci-hcd.c usb: kill DEBUG compile option 2013-12-03 10:34:33 -08:00
uhci-hcd.h
uhci-hub.c USB/host: Bugfix: Return length of copied buffer in uhci_hub_control() 2013-10-07 00:07:17 -07:00
uhci-pci.c USB: remove DEFINE_PCI_DEVICE_TABLE macro 2013-12-04 16:58:47 -08:00
uhci-platform.c usb: hcd: move controller wakeup setting initialization to individual driver 2013-12-08 18:06:46 -08:00
uhci-q.c USB: UHCI: accept very late isochronous URBs 2013-09-25 17:05:34 -07:00
xhci-dbg.c xhci: replace xhci_read_64() with readq() 2013-12-02 12:59:49 -08:00
xhci-ext-caps.h xhci: fix port BESL LPM capability checking 2013-08-27 08:54:42 -07:00
xhci-hub.c xhci: replace xhci_writel() with writel() 2013-12-02 12:59:49 -08:00
xhci-mem.c xhci: replace xhci_write_64() with writeq() 2013-12-02 12:59:50 -08:00
xhci-pci.c Merge 3.13-rc5 into usb-next 2013-12-24 10:18:03 -08:00
xhci-plat.c usb: xhci: change enumeration scheme to 'new scheme' by default 2013-12-10 13:54:37 -08:00
xhci-ring.c xhci: Avoid infinite loop when sg urb requires too many trbs 2014-01-08 11:00:10 -08:00
xhci-trace.c
xhci-trace.h xhci: fix sparse warning in xhci-trace.h 2013-12-02 12:59:45 -08:00
xhci.c xhci: Set scatter-gather limit to avoid failed block writes. 2014-01-08 11:00:52 -08:00
xhci.h xhci: Set scatter-gather limit to avoid failed block writes. 2014-01-08 11:00:52 -08:00