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2710f8186f
mirror_ubuntu-kernels/drivers/usb/host
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Mathias Nyman 2710f8186f xhci: Stop unnecessary tracking of free trbs in a ring 
Trying to keep track of free trbs in a ring by adding and subtracting
deltas each time a enqueue or dequeue is increased or moved has proven to
be buggy and complicated, especially over long periods of time.

Recently a bug in counting free trbs was fixed, now taking into account
cancelled URBs that were turned into no-ops, preventing free_trbs to
slowly wander off causing unnecessary ring expansion. See
commit fe82f16aaf ("xhci: Fix incorrect tracking of free space on
transfer rings")

Turns out its a lot easier to just calculate the numer of free TRB
based on ring size and the current enqueue and dequeue pointer values.
This is currently only needed for the command ring as multi segment
transfer rings already ensures there is enough room the ring during
the ring expansion check.

We could get rid of the ring->num_trbs_free entry completely, but as
the xhci DbC code also uses it we don't clean that up in this patch.

Reported-by: Miller Hunter <MillerH@hearthnhome.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217242
Tested-by: Miller Hunter <MillerH@hearthnhome.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Message-ID: <20230602144009.1225632-8-mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-06-13 11:34:50 +02:00
..
bcma-hcd.c USB: bcma: Make GPIO explicitly optional 2022-11-08 16:39:56 +01:00
ehci-atmel.c usb: ehci-atmel: Convert to platform remove callback returning void 2023-05-28 12:36:27 +01:00
ehci-brcm.c usb: ehci-brcm: Convert to platform remove callback returning void 2023-05-28 12:36:28 +01:00
ehci-dbg.c usb: host: {e|o}hci-dbg: kill useless 'ret' variable initializers 2022-02-15 15:11:20 +01:00
ehci-exynos.c usb: ehci-exynos: Convert to platform remove callback returning void 2023-05-28 12:36:28 +01:00
ehci-fsl.c usb: ehci-fsl: Convert to platform remove callback returning void 2023-05-28 12:36:28 +01:00
ehci-fsl.h
ehci-grlib.c usb: ehci-grlib: Convert to platform remove callback returning void 2023-05-28 12:36:28 +01:00
ehci-hcd.c usb: reduce kernel log spam on driver registration 2022-08-31 09:07:53 +02:00
ehci-hub.c
ehci-mem.c
ehci-mv.c usb: ehci-mv: Convert to platform remove callback returning void 2023-05-28 12:36:28 +01:00
ehci-npcm7xx.c usb: ehci-npcm7xx: Convert to platform remove callback returning void 2023-05-28 12:36:28 +01:00
ehci-omap.c usb: ehci-omap: Convert to platform remove callback returning void 2023-05-28 12:36:28 +01:00
ehci-orion.c usb: ehci-orion: Convert to platform remove callback returning void 2023-05-28 12:36:28 +01:00
ehci-pci.c USB: Extend pci resume function to handle PM events 2023-05-13 17:33:18 +09:00
ehci-platform.c usb: ehci-platform: Convert to platform remove callback returning void 2023-05-28 12:36:29 +01:00
ehci-ppc-of.c usb: ehci-ppc-of: Convert to platform remove callback returning void 2023-05-28 12:36:29 +01:00
ehci-ps3.c
ehci-q.c usb: ehci: Use endpoint in URB to get maxpacket 2022-08-31 09:07:53 +02:00
ehci-sched.c
ehci-sh.c usb: ehci-sh: Convert to platform remove callback returning void 2023-05-28 12:36:29 +01:00
ehci-spear.c usb: ehci-spear: Convert to platform remove callback returning void 2023-05-28 12:36:29 +01:00
ehci-st.c usb: ehci-st: Convert to platform remove callback returning void 2023-05-28 12:36:29 +01:00
ehci-sysfs.c
ehci-timer.c
ehci-xilinx-of.c usb: ehci-xilinx-of: Convert to platform remove callback returning void 2023-05-28 12:36:29 +01:00
ehci.h usb: host: fix a typo in ehci.h 2022-11-29 08:56:09 +01:00
fhci-dbg.c
fhci-hcd.c usb: host: fhci-hcd: Convert to platform remove callback returning void 2023-05-29 15:53:24 +01:00
fhci-hub.c USB: FHCI: Switch to GPIO descriptors 2022-09-01 16:08:29 +02:00
fhci-mem.c
fhci-q.c
fhci-sched.c
fhci-tds.c
fhci.h USB: FHCI: Switch to GPIO descriptors 2022-09-01 16:08:29 +02:00
fsl-mph-dr-of.c usb: fsl-mph-dr-of: Convert to platform remove callback returning void 2023-05-28 12:36:29 +01:00
isp116x-hcd.c usb: isp116x-hcd: Convert to platform remove callback returning void 2023-05-28 12:36:29 +01:00
isp116x.h
isp1362-hcd.c usb: isp1362-hcd: Convert to platform remove callback returning void 2023-05-28 12:36:30 +01:00
isp1362.h
Kconfig usb: add HAS_IOPORT dependencies 2023-05-29 15:28:34 +01:00
Makefile usb: host: u132-hcd: Delete driver 2023-03-21 14:06:11 +01:00
max3421-hcd.c usb: host: max3421-hcd: drop of_match_ptr for ID table 2023-03-16 12:15:23 +01:00
octeon-hcd.c usb: octeon-hcd: Convert to platform remove callback returning void 2023-05-28 12:36:30 +01:00
octeon-hcd.h staging: octeon-usb: move driver out of staging 2022-06-21 16:43:37 +02:00
ohci-at91.c usb: ohci-at91: Convert to platform remove callback returning void 2023-05-28 12:36:30 +01:00
ohci-da8xx.c usb: ohci-da8xx: Convert to platform remove callback returning void 2023-05-28 12:36:30 +01:00
ohci-dbg.c usb: host: {e|o}hci-dbg: kill useless 'ret' variable initializers 2022-02-15 15:11:20 +01:00
ohci-exynos.c usb: ohci-exynos: Convert to platform remove callback returning void 2023-05-28 12:36:30 +01:00
ohci-hcd.c usb: remove ohci-tmio driver 2023-02-01 17:23:38 +01:00
ohci-hub.c
ohci-mem.c
ohci-nxp.c usb: ohci-nxp: Convert to platform remove callback returning void 2023-05-28 12:36:30 +01:00
ohci-omap.c usb: ohci-omap: Convert to platform remove callback returning void 2023-05-28 12:36:30 +01:00
ohci-pci.c USB: Extend pci resume function to handle PM events 2023-05-13 17:33:18 +09:00
ohci-platform.c usb: host: ohci-platform: increase max clock number to 4 2023-05-29 15:54:05 +01:00
ohci-ppc-of.c usb: ohci-ppc-of: Convert to platform remove callback returning void 2023-05-28 12:36:31 +01:00
ohci-ps3.c
ohci-pxa27x.c usb: ohci-pxa27x: Convert to platform remove callback returning void 2023-05-28 12:36:31 +01:00
ohci-q.c
ohci-s3c2410.c usb: ohci-s3c2410: Convert to platform remove callback returning void 2023-05-28 12:36:31 +01:00
ohci-sa1111.c ARM: sa1100: remove unused board files 2023-01-12 10:53:12 +01:00
ohci-sm501.c usb: ohci-sm501: Convert to platform remove callback returning void 2023-05-28 12:36:31 +01:00
ohci-spear.c usb: ohci-spear: Convert to platform remove callback returning void 2023-05-28 12:36:31 +01:00
ohci-st.c usb: ohci-st: Convert to platform remove callback returning void 2023-05-28 12:36:31 +01:00
ohci.h
oxu210hp-hcd.c usb: oxu210hp-hcd: Convert to platform remove callback returning void 2023-05-28 12:36:31 +01:00
pci-quirks.c usb: pci-quirks: Reduce the length of a spinlock section in usb_amd_find_chipset_info() 2023-03-29 09:02:19 +02:00
pci-quirks.h
r8a66597-hcd.c usb: r8a66597-hcd: Convert to platform remove callback returning void 2023-05-28 12:36:31 +01:00
r8a66597.h
sl811_cs.c
sl811-hcd.c usb: sl811-hcd: Convert to platform remove callback returning void 2023-05-28 12:36:32 +01:00
sl811.h
ssb-hcd.c
uhci-debug.c
uhci-grlib.c usb: uhci-grlib: Convert to platform remove callback returning void 2023-05-28 12:36:32 +01:00
uhci-hcd.c usb: uhci: handle HAS_IOPORT dependencies 2023-05-29 15:29:03 +01:00
uhci-hcd.h usb: uhci: handle HAS_IOPORT dependencies 2023-05-29 15:29:03 +01:00
uhci-hub.c
uhci-pci.c Merge 6.4-rc4 into usb-next 2023-05-28 15:25:53 +01:00
uhci-platform.c usb: uhci-platform: Convert to platform remove callback returning void 2023-05-28 12:36:32 +01:00
uhci-q.c
xen-hcd.c xen: make remove callback of xen driver void returned 2022-12-15 16:06:10 +01:00
xhci-dbg.c
xhci-dbgcap.c xhci: dbc: Provide sysfs option to configure dbc descriptors 2023-03-23 17:25:22 +01:00
xhci-dbgcap.h xhci: dbc: Provide sysfs option to configure dbc descriptors 2023-03-23 17:25:22 +01:00
xhci-dbgtty.c xhci: dbgtty: use IDR to support several dbc instances. 2022-02-17 16:20:45 +01:00
xhci-debugfs.c xhci: fix debugfs register accesses while suspended 2023-04-20 10:13:06 +02:00
xhci-debugfs.h
xhci-ext-caps.c
xhci-ext-caps.h
xhci-histb.c xhci: get rid of XHCI_PLAT quirk that used to prevent MSI setup 2023-06-13 11:34:50 +02:00
xhci-hub.c xhci: decouple usb2 port resume and get_port_status request handling 2023-02-02 16:44:42 +01:00
xhci-mem.c xhci: Stop unnecessary tracking of free trbs in a ring 2023-06-13 11:34:50 +02:00
xhci-mtk-sch.c usb: xhci-mtk: fix bandwidth release issue 2022-08-19 10:39:08 +02:00
xhci-mtk.c xhci: get rid of XHCI_PLAT quirk that used to prevent MSI setup 2023-06-13 11:34:50 +02:00
xhci-mtk.h usb: xhci-mtk: add optional frame count clock 2023-04-20 10:13:39 +02:00
xhci-mvebu.c usb: host: xhci: mvebu: Iterate over array indexes instead of using pointer math 2023-02-06 13:46:42 +01:00
xhci-mvebu.h Revert "usb: host: xhci: mvebu: make USB 3.0 PHY optional for Armada 3720" 2022-02-25 19:12:21 +05:30
xhci-pci-renesas.c usb: renesas-xhci: Do not print any log while fw verif success 2022-07-27 14:37:48 +02:00
xhci-pci.c xhci: get rid of XHCI_PLAT quirk that used to prevent MSI setup 2023-06-13 11:34:50 +02:00
xhci-pci.h
xhci-plat.c xhci: get rid of XHCI_PLAT quirk that used to prevent MSI setup 2023-06-13 11:34:50 +02:00
xhci-plat.h usb: xhci-plat: Convert to platform remove callback returning void 2023-05-30 15:27:17 +01:00
xhci-rcar.c usb: xhci-plat: Convert to platform remove callback returning void 2023-05-30 15:27:17 +01:00
xhci-ring.c xhci: Stop unnecessary tracking of free trbs in a ring 2023-06-13 11:34:50 +02:00
xhci-rzv2m.c xhci: host: Add Renesas RZ/V2M SoC support 2023-01-25 15:48:17 +01:00
xhci-rzv2m.h xhci: host: Add Renesas RZ/V2M SoC support 2023-01-25 15:48:17 +01:00
xhci-tegra.c xhci: get rid of XHCI_PLAT quirk that used to prevent MSI setup 2023-06-13 11:34:50 +02:00
xhci-trace.c xhci: Move functions to setup msi to xhci-pci 2023-03-23 17:25:22 +01:00
xhci-trace.h xhci: Stop unnecessary tracking of free trbs in a ring 2023-06-13 11:34:50 +02:00
xhci.c xhci: Don't require a valid get_quirks() function pointer during xhci setup 2023-06-13 11:34:49 +02:00
xhci.h xhci: Stop unnecessary tracking of free trbs in a ring 2023-06-13 11:34:50 +02:00