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android_kernel_oneplus_msm8998/drivers/mmc/host
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Alex Smith 3f0491bb89 mmc: jz4740: Fix race condition in IRQ mask update 
commit a04f0017c22453613d5f423326b190c61e3b4f98 upstream.

A spinlock is held while updating the internal copy of the IRQ mask,
but not while writing it to the actual IMASK register. After the lock
is released, an IRQ can occur before the IMASK register is written.
If handling this IRQ causes the mask to be changed, when the handler
returns back to the middle of the first mask update, a stale value
will be written to the mask register.

If this causes an IRQ to become unmasked that cannot have its status
cleared by writing a 1 to it in the IREG register, e.g. the SDIO IRQ,
then we can end up stuck with the same IRQ repeatedly being fired but
not handled. Normally the MMC IRQ handler attempts to clear any
unexpected IRQs by writing IREG, but for those that cannot be cleared
in this way then the IRQ will just repeatedly fire.

This was resulting in lockups after a while of using Wi-Fi on the
CI20 (GitHub issue #19).

Resolve by holding the spinlock until after the IMASK register has
been updated.

Cc: stable@vger.kernel.org
Link: https://github.com/MIPS/CI20_linux/issues/19
Fixes: 61bfbdb856 ("MMC: Add support for the controller on JZ4740 SoCs.")
Tested-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Alex Smith <alex.smith@imgtec.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-04-24 09:32:08 +02:00
..
android-goldfish.c mmc: android-goldfish: remove incorrect __iomem annotation 2015-09-01 14:19:11 +02:00
atmel-mci-regs.h mmc: atmel-mci: use endian agnostic IO 2015-03-25 09:46:18 +01:00
atmel-mci.c mmc: atmel-mci: remove useless include 2015-08-27 14:50:53 +02:00
au1xmmc.c mmc: host: drop owner assignment from platform_drivers 2014-10-20 16:20:56 +02:00
bfin_sdh.c
cb710-mmc.c
cb710-mmc.h
davinci_mmc.c mmc: davinci: Constify platform_device_id 2015-06-01 09:06:49 +02:00
dw_mmc-exynos.c mmc: mmc: extend the mmc_send_tuning() 2015-10-27 10:38:41 +01:00
dw_mmc-exynos.h mmc: dw_mmc: exynos: Support eMMC's HS400 mode 2015-03-23 14:13:28 +01:00
dw_mmc-k3.c mmc: dw_mmc: k3: Fix modalias to make module auto-loading work 2015-06-01 09:07:05 +02:00
dw_mmc-pci.c mmc: dw_mmc-pci: Remove superflous #else condition on CONFIG_PM_SLEEP 2014-09-09 13:59:05 +02:00
dw_mmc-pltfm.c mmc: dw_mmc-pltfm: fix the potential NULL pointer dereference 2016-11-10 16:36:35 +01:00
dw_mmc-pltfm.h
dw_mmc-rockchip.c mmc: mmc: extend the mmc_send_tuning() 2015-10-27 10:38:41 +01:00
dw_mmc.c mmc: dw_mmc: fix falling from idmac to PIO mode when dw_mci_reset occurs 2018-03-28 18:40:13 +02:00
dw_mmc.h mmc: dw_mmc: fix the CardThreshold boundary at CardThrCtl register 2015-10-29 11:00:37 +01:00
jz4740_mmc.c mmc: jz4740: Fix race condition in IRQ mask update 2018-04-24 09:32:08 +02:00
Kconfig mmc: sdhci-acpi: Reduce Baytrail eMMC/SD/SDIO hangs 2016-09-07 08:32:37 +02:00
Makefile mmc: sdhci-pci: Build o2micro support in the same module 2015-10-26 16:00:05 +01:00
mmc_spi.c mmc: mmc_spi: Add Card Detect comments and fix CD GPIO case 2016-04-12 09:09:01 -07:00
mmci.c mmc: mmci: fix an ages old detection error 2016-03-03 15:07:15 -08:00
mmci.h mmc: mmci: Add Qcom specific rx_fifocnt logic. 2014-07-09 11:25:57 +02:00
mmci_qcom_dml.c mmc: mmci: Add qcom dml support to the driver. 2014-09-09 13:58:46 +02:00
mmci_qcom_dml.h mmc: mmci: Add qcom dml support to the driver. 2014-09-09 13:58:46 +02:00
moxart-mmc.c mmc: moxart: Fix module autoload for OF platform driver 2015-10-26 15:59:57 +01:00
mtk-sd.c mmc: mediatek: Fixed bug where clock frequency could be set wrong 2017-12-20 10:04:55 +01:00
mvsdio.c mmc: mvsdio: don't use devm_pinctrl_get_select_default() in probe 2015-01-19 09:56:21 +01:00
mvsdio.h
mxcmmc.c mmc: host: mxcmmc: Simplify a trivial if-return sequence 2015-06-01 09:07:02 +02:00
mxs-mmc.c mmc: mxs-mmc: Fix additional cycles after transmission stop 2017-01-26 08:23:48 +01:00
of_mmc_spi.c
omap.c mmc: omap: Fix module autoload for OF platform driver 2015-10-26 15:59:58 +01:00
omap_hsmmc.c mmc: host: omap_hsmmc: checking for NULL instead of IS_ERR() 2018-03-24 10:58:43 +01:00
pxamci.c mmc: pxamci: fix potential oops 2016-10-07 15:23:41 +02:00
pxamci.h
rtsx_pci_sdmmc.c mmc: rtsx: Constify platform_device_id 2015-06-01 09:06:50 +02:00
rtsx_usb_sdmmc.c mmc: rtsx_usb_sdmmc: Handle runtime PM while changing the led 2016-10-28 03:01:35 -04:00
s3cmci.c mmc: s3cmci: include linux/interrupt.h for tasklet_struct 2017-11-08 10:06:28 +01:00
s3cmci.h mmc: s3cmci: port DMA code to dmaengine API 2014-07-09 11:26:13 +02:00
sdhci-acpi.c mmc: sdhci-acpi: Reduce Baytrail eMMC/SD/SDIO hangs 2016-09-07 08:32:37 +02:00
sdhci-bcm-kona.c mmc: sdhci-bcm-kona: fix logic to check for 8-bit data width 2015-10-26 15:59:55 +01:00
sdhci-bcm2835.c mmc: sdhci-bcm2835: Actually enable the clock 2015-06-01 09:56:07 +02:00
sdhci-cns3xxx.c mmc: sdhci: set the .remove to sdhci_pltfm_unregister() 2015-03-23 14:13:35 +01:00
sdhci-dove.c mmc: sdhci: set the .remove to sdhci_pltfm_unregister() 2015-03-23 14:13:35 +01:00
sdhci-esdhc-imx.c mmc: sdhci-esdhc-imx: increase the pad I/O drive strength for DDR50 card 2017-04-27 09:09:33 +02:00
sdhci-esdhc.h mmc: sdhci-of-esdhc: support both BE and LE host controller 2015-10-26 16:00:08 +01:00
sdhci-iproc.c mmc: sdhci-iproc: suppress spurious interrupt with Multiblock read 2017-06-07 12:06:00 +02:00
sdhci-msm.c mmc: mmc: extend the mmc_send_tuning() 2015-10-27 10:38:41 +01:00
sdhci-of-arasan.c mmc: sdhci-of-arasan: Add the support for sdhci-5.1 2015-08-27 14:50:54 +02:00
sdhci-of-at91.c mmc: sdhci-of-at91: remove a line of dead code 2015-10-26 15:59:56 +01:00
sdhci-of-esdhc.c mmc: sdhci-of-esdhc: limit SD clock for ls1012a/ls1046a 2018-03-24 10:58:45 +01:00
sdhci-of-hlwd.c mmc: sdhci: set the .remove to sdhci_pltfm_unregister() 2015-03-23 14:13:35 +01:00
sdhci-pci-core.c mmc: sdhci-pci: Remove MMC_CAP_BUS_WIDTH_TEST for Intel controllers 2016-06-01 12:15:50 -07:00
sdhci-pci-data.c mmc: sdhci-pci: Add support for drive strength selection for SPT 2015-06-01 09:07:14 +02:00
sdhci-pci-o2micro.c mmc: sdhci-pci: Make sdhci_pci_o2_fujin2_pci_init() static 2015-10-26 16:00:05 +01:00
sdhci-pci-o2micro.h mmc: sdhci-pci: Make sdhci_pci_o2_fujin2_pci_init() static 2015-10-26 16:00:05 +01:00
sdhci-pci.h mmc: sdhci-pci: Add support and PCI IDs for more Broxton host controllers 2016-04-20 15:42:14 +09:00
sdhci-pltfm.c mmc: sdhci-pltfm: Use of_property_read_u32 instead of open-coding it 2015-10-26 15:59:57 +01:00
sdhci-pltfm.h mmc: sdhci-pltfm: export pltfm suspend/resume api 2014-01-13 12:48:06 -05:00
sdhci-pxav2.c mmc: sdhci-{pxav2,pxav3}: Use of_match_ptr() macro 2015-06-01 09:06:53 +02:00
sdhci-pxav3.c mmc: sdhci-pxav3: fix error handling of armada_38x_quirks 2015-10-08 19:24:23 +02:00
sdhci-s3c-regs.h
sdhci-s3c.c mmc: sdhci-s3c: Constify platform_device_id 2015-06-01 09:06:52 +02:00
sdhci-sirf.c mmc: mmc: extend the mmc_send_tuning() 2015-10-27 10:38:41 +01:00
sdhci-spear.c Update Viresh Kumar's email address 2015-07-17 16:39:53 -07:00
sdhci-st.c mmc: sdhci-st: Fix modalias to make module auto-loading work 2015-06-01 09:07:07 +02:00
sdhci-tegra.c mmc: sdhci-tegra: convert to use GPIO descriptors 2015-04-01 12:56:07 +02:00
sdhci.c mmc: sdhci: Do not disable interrupts while waiting for clock 2017-03-30 09:35:18 +02:00
sdhci.h mmc: sdhci: 64-bit DMA actually has 4-byte alignment 2016-09-15 08:27:44 +02:00
sdhci_f_sdh30.c mmc: sdhci_f_sdh30: Fix the size passed to sdhci_alloc_host 2015-06-01 09:06:46 +02:00
sdricoh_cs.c
sh_mmcif.c mmc: sh_mmcif: Correct TX DMA channel allocation 2016-04-12 09:08:32 -07:00
sh_mobile_sdhi.c mmc: sh_mobile_sdhi: remove sh_mobile_sdhi_info 2015-03-05 21:54:26 +05:30
sunxi-mmc.c mmc: sunxi: Add card busy detection 2015-10-26 16:00:02 +01:00
tifm_sd.c mmc: Convert pr_warning to pr_warn 2014-09-24 10:13:09 +02:00
tmio_mmc.c mmc: TMIO: Use devm_request_irq() 2015-06-01 09:06:48 +02:00
tmio_mmc.h mmc: tmio: mmc: tmio: tmio_mmc_data has .chan_priv_?x 2015-03-05 21:54:17 +05:30
tmio_mmc_dma.c mmc: tmio: mmc: tmio: tmio_mmc_data has .chan_priv_?x 2015-03-05 21:54:17 +05:30
tmio_mmc_pio.c mmc: tmio: Fix timeout value for command request 2015-08-24 11:25:53 +02:00
toshsd.c mmc: toshsd: Fix unbalanced locking 2015-01-19 09:56:07 +01:00
toshsd.h mmc: add Toshiba PCI SD controller driver 2014-11-26 14:30:58 +01:00
usdhi6rol0.c mmc: usdhi6rol0: handle NULL data in timeout 2016-03-03 15:07:15 -08:00
ushc.c mmc: ushc: fix NULL-deref at probe 2017-03-30 09:35:17 +02:00
via-sdmmc.c
vub300.c mmc: vub300: Remove unneded semicolons 2015-10-26 15:59:54 +01:00
wbsd.c mmc: wbsd: Remove unneded semicolon 2015-10-26 15:59:53 +01:00
wbsd.h
wmt-sdmmc.c mmc: constify of_device_id array 2015-03-23 14:13:49 +01:00