AuxXxilium/linux_dsm_epyc7002
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f76a28a69a
linux_dsm_epyc7002/drivers/usb/host
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Arnd Bergmann f76a28a69a xhci: free the correct ring 
gcc warns about what first looks like a reference to an uninitialized
variable:

drivers/usb/host/xhci-ring.c: In function 'handle_cmd_completion':
drivers/usb/host/xhci-ring.c:753:4: error: 'ep_ring' may be used uninitialized in this function [-Werror=maybe-uninitialized]
    xhci_unmap_td_bounce_buffer(xhci, ep_ring, cur_td);
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/usb/host/xhci-ring.c:647:20: note: 'ep_ring' was declared here
  struct xhci_ring *ep_ring;
                    ^~~~~~~

It's clear to see that the list_empty() check means it can never be
uninitialized, however it still looks wrong:

When ep->cancelled_td_list contains more than one entry, the
ep_ring variable will point to the ring that was retrieved
from the last urb, and we have to look it up again in the
second loop instead, which fixes the behavior and gets rid of the
warning too.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: f9c589e142 ("xhci: TD-fragment, align the unsplittable case with a bounce buffer")
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-07-01 08:59:44 -07:00
..
whci usb: hcd: do not call whc_clean_up on wch_init call failure 2016-04-26 16:11:22 -07:00
bcma-hcd.c USB: bcma: use simpler devm helper for getting vcc GPIO 2016-04-26 16:11:22 -07:00
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: EHCI: make all debugging depend on CONFIG_DYNAMIC_DEBUG 2016-04-29 15:31:30 -07:00
ehci-exynos.c usb/host/: const data must use __initconst not __initdata 2016-04-28 12:35:36 -07:00
ehci-fsl.c drivers/usb/host/fsl: Port USB EHCI host driver for LS102xA 2016-01-24 20:37:47 -08:00
ehci-fsl.h drivers: usb: fsl: Define usb control register mask for w1c bits 2015-07-22 16:44:35 -07:00
ehci-grlib.c usb: host: drop owner assignment from platform_drivers 2015-01-09 12:31:53 -08:00
ehci-hcd.c usb: echi-hcd: Add ehci_setup check before echi_shutdown 2016-06-07 22:15:25 -07:00
ehci-hub.c USB: EHCI: avoid undefined pointer arithmetic and placate UBSAN 2016-06-01 14:56:24 -07:00
ehci-mem.c USB-EHCI: Delete unnecessary checks before the function call "dma_pool_destroy" 2015-12-01 14:26:33 -08:00
ehci-msm.c usb: host: ehci-msm: Conditionally call ehci suspend/resume 2016-06-07 22:15:25 -07:00
ehci-mv.c host: ehci-mv: remove duplicate check on resource 2014-11-07 09:01:50 -08:00
ehci-mxc.c host: ehci-mxc: remove duplicate check on resource 2014-11-07 09:01:50 -08:00
ehci-omap.c usb/host/: const data must use __initconst not __initdata 2016-04-28 12:35:36 -07:00
ehci-orion.c usb: ehci-orion: fix probe for !GENERIC_PHY 2015-10-04 10:45:08 +01:00
ehci-pci.c ehci-hcd: Disable memory-write-invalidate when the driver is removed 2016-01-24 20:51:34 -08:00
ehci-platform.c ehci-platform: Add support for shared reset controllers 2016-06-08 10:55:17 -07:00
ehci-pmcmsp.c usb: host: drop owner assignment from platform_drivers 2015-01-09 12:31:53 -08:00
ehci-ppc-of.c usb: host: drop owner assignment from platform_drivers 2015-01-09 12:31:53 -08:00
ehci-ps3.c
ehci-q.c USB: EHCI: improvements to unlink_empty_async_suspended() 2016-02-03 13:14:52 -08:00
ehci-sched.c usb: host: ehci-sched: remove unnecessary braces 2016-02-03 13:44:05 -08:00
ehci-sead3.c usb: host: drop owner assignment from platform_drivers 2015-01-09 12:31:53 -08:00
ehci-sh.c usb: host: drop owner assignment from platform_drivers 2015-01-09 12:31:53 -08:00
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: use to_platform_device 2016-01-24 21:00:33 -08:00
ehci-sysfs.c usb: host: ehci-sys: delete useless bus_to_hcd conversion 2015-08-18 10:05:23 -07:00
ehci-tegra.c usb: host: ehci-tegra: Avoid getting the same reset twice 2016-06-07 22:15:25 -07:00
ehci-tilegx.c usb: host: drop owner assignment from platform_drivers 2015-01-09 12:31:53 -08:00
ehci-timer.c USB: EHCI: add a delay when unlinking an active QH 2016-02-03 13:14:52 -08:00
ehci-w90x900.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
ehci-xilinx-of.c usb: host: drop owner assignment from platform_drivers 2015-01-09 12:31:53 -08:00
ehci.h usb: host: unhide suspend/resume declarations 2016-03-03 20:37:41 -08:00
fhci-dbg.c
fhci-hcd.c QE: Move QE from arch/powerpc to drivers/soc 2015-12-22 17:12:56 -06:00
fhci-hub.c QE: Move QE from arch/powerpc to drivers/soc 2015-12-22 17:12:56 -06:00
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 usb: whci: fhci: remove comparison to bool 2015-12-04 08:25:58 -08:00
fhci.h QE: Move QE from arch/powerpc to drivers/soc 2015-12-22 17:12:56 -06:00
fotg210-hcd.c usb/host/fotg210: remove dead code in create_sysfs_files 2016-05-09 13:08:46 +02:00
fotg210.h usb/host/fotg210: Fix coding style issues 2015-10-16 23:46:22 -07:00
fsl-mph-dr-of.c drivers/usb/host: fsl: Set DMA_MASK of usb platform device 2016-01-24 20:37:47 -08:00
hwa-hc.c USB: HWA: fix a warning message 2014-11-03 15:26:15 -08:00
imx21-dbg.c
imx21-hcd.c imx21-hcd: use USB_DT_HUB 2015-04-03 19:03:18 +02:00
imx21-hcd.h
isp116x-hcd.c USB: isp116x-hcd.c: move assignment out of if () block 2015-05-10 16:01:11 +02:00
isp116x.h
isp1362-hcd.c isp1362-hcd: use USB_DT_HUB 2015-04-03 19:03:18 +02:00
isp1362.h
Kconfig usb: gadget: move gadget API functions to udc-core 2016-06-21 10:38:34 +03:00
Makefile usb: xhci: Add NVIDIA Tegra XUSB controller driver 2016-04-29 16:48:58 +02:00
max3421-hcd.c usb: host: max3421-hcd: use list_for_each_entry* 2016-01-24 20:55:33 -08:00
ohci-at91.c Revert "usb: ohci-at91: Forcibly suspend ports while USB suspend" 2016-06-20 07:42:07 -07:00
ohci-da8xx.c usb: host: drop owner assignment from platform_drivers 2015-01-09 12:31:53 -08:00
ohci-dbg.c USB: ohci-dbg.c: move assignment out of if () block 2015-05-10 16:01:11 +02:00
ohci-exynos.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
ohci-hcd.c USB: ohci-jz4740: Remove obsolete driver 2016-05-13 19:10:20 +02:00
ohci-hub.c ohci-hub: use USB_DT_HUB 2015-04-03 19:03:17 +02:00
ohci-mem.c
ohci-nxp.c usb: ohci: nxp: remove USB PLL and USB OTG clock management 2016-03-03 20:38:53 -08:00
ohci-omap3.c
ohci-omap.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
ohci-pci.c
ohci-platform.c ohci-platform: Add support for controllers with multiple reset lines 2016-06-07 22:21:41 -07:00
ohci-ppc-of.c usb: host: drop owner assignment from platform_drivers 2015-01-09 12:31:53 -08:00
ohci-ps3.c
ohci-pxa27x.c usb: host: ohci-pxa27x: propagate the irq error code 2016-02-14 17:06:43 -08:00
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 ohci-s3c2410: use HUB_CHAR_* 2015-01-25 21:01:13 +08:00
ohci-sa1111.c
ohci-sm501.c usb: host: drop owner assignment from platform_drivers 2015-01-09 12:31:53 -08:00
ohci-spear.c usb: host: ohci-spear: Fix module autoload for OF platform driver 2015-10-04 10:51:58 +01:00
ohci-st.c USB: host: use to_platform_device 2016-01-24 21:00:33 -08:00
ohci-tilegx.c usb: host: drop owner assignment from platform_drivers 2015-01-09 12:31:53 -08:00
ohci-tmio.c USB: OHCI: fix bad #define in ohci-tmio.c 2015-07-22 14:49:42 -07:00
ohci.h usb: host: unhide suspend/resume declarations 2016-03-03 20:37:41 -08:00
oxu210hp-hcd.c usb: host: oxu210hp-hcd: use list_for_each_entry_safe 2016-01-24 20:55:33 -08:00
oxu210hp.h
pci-quirks.c usb: host: pci_quirks: fix memory leak, by adding iounmap 2016-02-14 17:21:09 -08:00
pci-quirks.h
r8a66597-hcd.c usb: r8a66597: add locking to r8a66597_check_detect_child 2016-02-06 21:55:57 -08:00
r8a66597.h
sl811_cs.c
sl811-hcd.c usb: generic resume timeout for v4.1 2015-04-10 13:45:27 +02:00
sl811.h
ssb-hcd.c USB: ssb: use devm_kzalloc 2015-06-08 14:26:22 -07:00
u132-hcd.c usb: host: u132-hcd: use list_for_each_entry 2016-01-24 20:55:33 -08:00
uhci-debug.c new helpers: no_seek_end_llseek{,_size}() 2015-12-23 10:41:31 -05:00
uhci-grlib.c usb: host: drop owner assignment from platform_drivers 2015-01-09 12:31:53 -08:00
uhci-hcd.c
uhci-hcd.h
uhci-hub.c usb: generic resume timeout for v4.1 2015-04-10 13:45:27 +02:00
uhci-pci.c
uhci-platform.c usb: host: uhci-platform: Fix module autoload for OF platform driver 2015-10-04 10:51:58 +01:00
uhci-q.c usb : replace dma_pool_alloc and memset with dma_pool_zalloc 2015-12-01 14:26:33 -08:00
xhci-dbg.c xhci: Read and parse new xhci 1.1 capability register 2015-10-04 10:34:17 +01:00
xhci-ext-caps.h xhci: harden xhci_find_next_ext_cap against device removal 2016-02-04 17:00:10 -08:00
xhci-hub.c xhci: USB 3.1 add default Speed Attributes to SuperSpeedPlus device capability 2016-02-03 13:20:54 -08:00
xhci-mem.c xhci: TD-fragment, align the unsplittable case with a bounce buffer 2016-06-26 11:43:39 -07:00
xhci-mtk-sch.c usb: xhci-mtk: fix bpkts value of LS/HS periodic eps not behind TT 2016-02-03 14:01:47 -08:00
xhci-mtk.c usb: xhci-mtk: use __maybe_unused to hide pm functions 2016-03-03 20:37:41 -08:00
xhci-mtk.h xhci: mediatek: support MTK xHCI host controller 2015-12-01 10:45:51 -08:00
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 USB: xhci: Add broken streams quirk for Frescologic device id 1009 2016-06-01 14:57:11 -07:00
xhci-plat.c xhci: get rid of platform data 2016-06-26 11:43:39 -07:00
xhci-plat.h usb: host: xhci: plat: finally get rid of xhci_plat_type_is() 2016-04-26 16:08:02 -07:00
xhci-rcar.c usb: host: xhci: rcar: retire use of xhci_plat_type_is() 2016-04-26 16:08:02 -07:00
xhci-rcar.h usb: host: xhci-plat: add support for the R-Car H3 xHCI controllers 2015-12-01 10:45:51 -08:00
xhci-ring.c xhci: free the correct ring 2016-07-01 08:59:44 -07:00
xhci-tegra.c usb: xhci: tegra: Add Tegra210 support 2016-04-29 16:48:59 +02:00
xhci-trace.c xhci: Export symbols used by host-controller drivers 2014-10-03 14:44:45 -07:00
xhci-trace.h tracing: Add TRACE_SYSTEM_VAR to xhci-hcd 2015-04-07 12:31:55 -04:00
xhci.c xhci: TD-fragment, align the unsplittable case with a bounce buffer 2016-06-26 11:43:39 -07:00
xhci.h xhci: TD-fragment, align the unsplittable case with a bounce buffer 2016-06-26 11:43:39 -07:00