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b5c16a60e5
linux/drivers/mmc/host
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Srinivas Kandagatla b5c16a60e5 mmc: mmci: fix mmci_post_request 
If the post request is cancelling the channel and descriptor and which are
equal to host->dma_current and host->dma_desc_current respectively, then it
makes sense to reset these pointers to NULL, so that the driver does not
reference it.

Also the host_cookie can be reset to 0 in cases of error, so that the
core could reissue the same mmc_request.

This patch was tested with 'mmc: core: fix prepared requests while doing
bkops' to fix the below issue.

mmci-pl18x 12400000.sdcc: error during DMA transfer!
Unable to handle kernel paging request at virtual address 40000000
pgd = c0204000
[40000000] *pgd=00000000
Internal error: Oops: 805 [#1] SMP ARM
Modules linked in: ipv6 ath6kl_sdio ath6kl_core
CPU: 0 PID: 0 Comm: swapper/0 Tainted: G        W      3.17.0-rc7-linaro-multi-v7 #1
task: c0c9d7e0 ti: c0c92000 task.ti: c0c92000
PC is at v7_dma_inv_range+0x34/0x4c
LR is at __dma_page_dev_to_cpu+0x80/0x100
pc : [<c021efc0>]    lr : [<c021af18>]    psr: 400f0193
sp : c0c93e20  ip : c0c9a478  fp : c08ea538
r10: c0c9f548  r9 : 00000002  r8 : e97d9000
r7 : 00000200  r6 : c0c9d504  r5 : c0db0880  r4 : 00000000
r3 : 0000003f  r2 : 00000040  r1 : 40000200  r0 : 40000000
Flags: nZcv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
Control: 10c5787d  Table: a9ef406a  DAC: 00000015
Process swapper/0 (pid: 0, stack limit = 0xc0c92250)
Stack: (0xc0c93e20 to 0xc0c94000)
3e20: c021f058 e9a17178 e9a171bc e99dfd6c 00000001 00000001 e995de10 00000002
3e40: 00000000 c021b574 00000000 c04bc4a4 00000000 e9b49ac0 c0ce6e6c e99dfda4
3e60: 00000088 e9810780 c0d8291c c072ea58 00000000 c072d3fc 00000000 c072f534
3e80: 00000000 e9b49ac0 00000100 c0c9a444 00000088 c072f6b4 c072f5d4 e9d40080
3ea0: e98107dc 00000000 00000000 c0280a60 00000000 7d55bf61 e9810780 e98107dc
3ec0: 00000000 f0002000 c0d460e8 c0d460e8 c0c92000 c0280b60 e9810780 c0ce7190
3ee0: 00000000 c028369c c02835f4 00000088 00000088 c0280278 c0c8ec70 c020f080
3f00: f000200c c0c9a958 c0c93f28 c02088e4 c04bd630 c04bd5bc 200f0013 ffffffff
3f20: c0c93f5c c0212800 00000001 a987c000 c0c93f3c c04bd574 00000000 0000015b
3f40: ea7a0e40 00000000 c0d460e8 c0d460e8 c0c92000 c08ea538 29b12000 c0c93f70
3f60: c04bd630 c04bd5bc 200f0013 ffffffff c04bd574 c071bd24 7d50c9b4 c0719a44
3f80: 7d50c9b4 0000015b c0c9a498 c0c92028 c0c9a498 c0c9a4fc ea7a0e40 c0c8ee38
3fa0: c0d460e8 c0276198 00000000 c0d8291a 00000000 c0c9a400 00000000 c0be0bc4
3fc0: ffffffff ffffffff c0be05f8 00000000 00000000 c0c533d8 c0d82ed4 c0c9a47c
3fe0: c0c533d4 c0c9e870 8020406a 511f06f0 00000000 80208074 00000000 00000000
[<c021efc0>] (v7_dma_inv_range) from [<c021af18>] (__dma_page_dev_to_cpu+0x80/0x100)
[<c021af18>] (__dma_page_dev_to_cpu) from [<c021b574>] (arm_dma_unmap_sg+0x5c/0x84)
[<c021b574>] (arm_dma_unmap_sg) from [<c072ea58>] (mmci_dma_unmap.isra.16+0x60/0x74)
[<c072ea58>] (mmci_dma_unmap.isra.16) from [<c072f534>] (mmci_data_irq+0x1fc/0x29c)
[<c072f534>] (mmci_data_irq) from [<c072f6b4>] (mmci_irq+0xe0/0x114)
[<c072f6b4>] (mmci_irq) from [<c0280a60>] (handle_irq_event_percpu+0x78/0x134)
[<c0280a60>] (handle_irq_event_percpu) from [<c0280b60>] (handle_irq_event+0x44/0x64)
[<c0280b60>] (handle_irq_event) from [<c028369c>] (handle_fasteoi_irq+0xa8/0x1a8)
[<c028369c>] (handle_fasteoi_irq) from [<c0280278>] (generic_handle_irq+0x2c/0x3c)
[<c0280278>] (generic_handle_irq) from [<c020f080>] (handle_IRQ+0x40/0x90)
[<c020f080>] (handle_IRQ) from [<c02088e4>] (gic_handle_irq+0x38/0x68)
[<c02088e4>] (gic_handle_irq) from [<c0212800>] (__irq_svc+0x40/0x54)
Exception stack(0xc0c93f28 to 0xc0c93f70)
3f20:                   00000001 a987c000 c0c93f3c c04bd574 00000000 0000015b
3f40: ea7a0e40 00000000 c0d460e8 c0d460e8 c0c92000 c08ea538 29b12000 c0c93f70
3f60: c04bd630 c04bd5bc 200f0013 ffffffff
[<c0212800>] (__irq_svc) from [<c04bd5bc>] (msm_cpu_pm_enter_sleep+0x48/0x4c)
[<c04bd5bc>] (msm_cpu_pm_enter_sleep) from [<c071bd24>] (qcom_lpm_enter_spc+0x20/0x2c)
[<c071bd24>] (qcom_lpm_enter_spc) from [<c0719a44>] (cpuidle_enter_state+0x44/0xf0)
[<c0719a44>] (cpuidle_enter_state) from [<c0276198>] (cpu_startup_entry+0x1f4/0x238)
[<c0276198>] (cpu_startup_entry) from [<c0be0bc4>] (start_kernel+0x384/0x390)
Code: 1e070f3e e1110003 e1c11003 1e071f3e (ee070f36)
---[ end trace cf6cb3f6432c9834 ]---
Kernel panic - not syncing: Fatal exception in interrupt

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-11-10 12:40:29 +01:00
..
android-goldfish.c mmc: remove unnecessary platform_set_drvdata() 2013-05-26 14:23:23 -04:00
atmel-mci-regs.h mmc: atmel-mci: AP700x PDC is not connected to MCI 2012-10-03 10:05:23 -04:00
atmel-mci.c mmc: atmel-mci: fix mismatched section on atmci_cleanup_slot 2014-09-29 11:27:32 +02:00
au1xmmc.c mmc: au1xmmc: fix error return code in au1xmmc_probe() 2014-09-09 13:59:01 +02:00
bfin_sdh.c mmc: bfin_sdh: Move away from using deprecated APIs 2013-10-30 20:26:36 -04:00
cb710-mmc.c mmc: cb710: Move away from using deprecated APIs 2013-10-30 20:26:37 -04:00
cb710-mmc.h mmc: host: use platform_{get,set}_drvdata() 2013-06-27 11:13:02 -04:00
davinci_mmc.c mmc: davinci: Remove redundant of_match_ptr 2014-02-25 15:42:55 -05:00
dw_mmc-exynos.c mmc: dw_mmc: exynos: Staticize dw_mci_exynos_pmops 2014-05-12 18:04:30 -04:00
dw_mmc-k3.c mmc: dw_mmc: fix possible build error 2014-03-03 14:00:56 -05:00
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: move rockchip related code to a separate file 2014-09-09 13:59:16 +02:00
dw_mmc-pltfm.h mmc: remove use of __devexit 2012-11-28 12:28:18 -08:00
dw_mmc-rockchip.c mmc: dw_mmc: move rockchip related code to a separate file 2014-09-09 13:59:16 +02:00
dw_mmc.c mmc: Consolidate emmc tuning blocks 2014-09-23 09:13:19 +02:00
dw_mmc.h mmc: dw_mmc: Support voltage changes 2014-09-09 13:59:18 +02:00
jz4740_mmc.c mmc: remove .owner field for drivers using module_platform_driver 2014-09-09 13:59:04 +02:00
Kconfig mmc: dw_mmc: move rockchip related code to a separate file 2014-09-09 13:59:16 +02:00
Makefile mmc: dw_mmc: move rockchip related code to a separate file 2014-09-09 13:59:16 +02:00
mmc_spi.c mmc: don't request CD IRQ until mmc_start_host() 2014-09-23 09:01:36 +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
mmci.c mmc: mmci: fix mmci_post_request 2014-11-10 12:40:29 +01:00
mmci.h mmc: mmci: Add Qcom specific rx_fifocnt logic. 2014-07-09 11:25:57 +02:00
moxart-mmc.c mmc: remove .owner field for drivers using module_platform_driver 2014-09-09 13:59:04 +02:00
msm_sdcc.c mmc: msm_sdcc: Move away from using deprecated APIs 2013-10-30 20:26:41 -04:00
msm_sdcc.h
mvsdio.c mmc: mvsdio: avoid compiler warning 2014-06-12 10:50:27 +02:00
mvsdio.h
mxcmmc.c mmc: mxcmmc: fix the default value for available voltages into mxcmci_probe 2014-11-10 12:40:25 +01:00
mxs-mmc.c mmc: remove .owner field for drivers using module_platform_driver 2014-09-09 13:59:04 +02:00
of_mmc_spi.c mmc: mmc_spi: Support CD/RO GPIOs 2013-08-24 23:45:22 -04:00
omap_hsmmc.c mmc: use .multi_io_quirk on omap_hsmmc 2014-09-09 14:10:42 +02:00
omap.c mmc: remove .owner field for drivers using module_platform_driver 2014-09-09 13:59:04 +02:00
pxamci.c mmc: pxamci: prepare and unprepare the clocks 2014-09-09 13:59:24 +02:00
pxamci.h
rtsx_pci_sdmmc.c mmc: rtsx_pci: Set power related cap2 macros 2014-09-24 11:20:16 +02:00
rtsx_usb_sdmmc.c mmc: rtsx_pci: Set power related cap2 macros 2014-09-24 11:20:16 +02:00
s3cmci.c mmc: Convert pr_warning to pr_warn 2014-09-24 10:13:09 +02:00
s3cmci.h mmc: s3cmci: port DMA code to dmaengine API 2014-07-09 11:26:13 +02:00
sdhci-acpi.c mmc: sdhci-acpi: Fix Braswell eMMC timeout clock frequency 2014-10-06 15:08:14 +02:00
sdhci-bcm2835.c mmc: remove .owner field for drivers using module_platform_driver 2014-09-09 13:59:04 +02:00
sdhci-bcm-kona.c mmc, sdhci, bcm-kona, LLVMLinux: Remove use of __initconst 2014-10-03 14:33:46 +02:00
sdhci-cns3xxx.c mmc: remove .owner field for drivers using module_platform_driver 2014-09-09 13:59:04 +02:00
sdhci-dove.c mmc: remove .owner field for drivers using module_platform_driver 2014-09-09 13:59:04 +02:00
sdhci-esdhc-imx.c mmc: sdhci-esdhc-imx: don't exit in case of no pinctrl states 2014-11-10 12:40:26 +01:00
sdhci-esdhc.h mmc: sdhci: convert sdhci_set_clock() into a library function 2014-05-22 07:26:32 -04:00
sdhci-msm.c mmc: Consolidate emmc tuning blocks 2014-09-23 09:13:19 +02:00
sdhci-of-arasan.c mmc: remove .owner field for drivers using module_platform_driver 2014-09-09 13:59:04 +02:00
sdhci-of-esdhc.c mmc: remove .owner field for drivers using module_platform_driver 2014-09-09 13:59:04 +02:00
sdhci-of-hlwd.c mmc: remove .owner field for drivers using module_platform_driver 2014-09-09 13:59:04 +02:00
sdhci-pci-data.c mmc: sdhci-pci: add platform data 2012-01-11 23:58:47 -05:00
sdhci-pci-o2micro.c mmc: sdhci-pci-o2micro: Fix Dell E5440 issue 2014-11-10 12:40:25 +01:00
sdhci-pci-o2micro.h mmc: sdhci-pci-o2micro: Add SeaBird SeaEagle SD3 support 2014-05-22 08:40:44 -04:00
sdhci-pci.c mmc: sdhci-pci: Fix Braswell eMMC timeout clock frequency 2014-10-03 14:25:35 +02:00
sdhci-pci.h mmc: sdhci-pci: Add Bay Trail and Braswell SD card detect 2014-10-03 14:24:52 +02:00
sdhci-pltfm.c mmc: sdhci-pltfm: Do not use parent as the host's device 2014-09-09 13:58:58 +02:00
sdhci-pltfm.h mmc: sdhci-pltfm: export pltfm suspend/resume api 2014-01-13 12:48:06 -05:00
sdhci-pxav2.c mmc: remove .owner field for drivers using module_platform_driver 2014-09-09 13:59:04 +02:00
sdhci-pxav3.c mmc: sdhci-pxav3: fix error handling of sdhci_add_host 2014-09-10 15:54:04 +02:00
sdhci-s3c-regs.h mmc: sdhci-s3c: remove platform dependencies 2013-04-19 13:51:23 +02:00
sdhci-s3c.c mmc: remove .owner field for drivers using module_platform_driver 2014-09-09 13:59:04 +02:00
sdhci-sirf.c mmc: don't request CD IRQ until mmc_start_host() 2014-09-23 09:01:36 +02:00
sdhci-spear.c mmc: remove .owner field for drivers using module_platform_driver 2014-09-09 13:59:04 +02:00
sdhci-st.c mmc: sdhci-st: Intial support for ST SDHCI controller 2014-07-10 09:11:18 +02:00
sdhci-tegra.c mmc: remove .owner field for drivers using module_platform_driver 2014-09-09 13:59:04 +02:00
sdhci.c mmc: sdhci: fix error conditions for controller reset 2014-11-10 12:40:27 +01:00
sdhci.h mmc: sdhci: execute tuning when device is not busy 2014-09-24 11:03:17 +02:00
sdricoh_cs.c mmc: sdricoh_cs: Move away from using deprecated APIs 2013-10-30 20:28:32 -04:00
sh_mmcif.c mmc: remove .owner field for drivers using module_platform_driver 2014-09-09 13:59:04 +02:00
sh_mobile_sdhi.c mmc: use .multi_io_quirk on sh_mobile 2014-09-09 14:15:42 +02:00
sunxi-mmc.c mmc: sunxi: Declare ERASE capability 2014-09-09 13:59:17 +02:00
tifm_sd.c mmc: Convert pr_warning to pr_warn 2014-09-24 10:13:09 +02:00
tmio_mmc_dma.c mmc: tmio: remove Renesas specific #ifdef 2014-09-09 13:59:15 +02:00
tmio_mmc_pio.c mmc: don't request CD IRQ until mmc_start_host() 2014-09-23 09:01:36 +02:00
tmio_mmc.c mmc: tmio_mmc: Fixup system PM suspend lock-up 2014-09-09 13:59:12 +02:00
tmio_mmc.h mmc: tmio: Remove library functions for system PM 2014-09-09 13:59:12 +02:00
usdhi6rol0.c mmc: usdhi6rol0: fix compiler warnings 2014-06-12 10:38:50 +02:00
ushc.c mmc: ushc: Fix incorrect parameter in sizeof 2014-02-25 15:42:20 -05:00
via-sdmmc.c mmc: via-sdmmc: Move away from using deprecated APIs 2013-10-30 20:28:36 -04:00
vub300.c mmc: vub300: Move away from using deprecated APIs 2013-10-30 20:26:43 -04:00
wbsd.c mmc: Convert pr_warning to pr_warn 2014-09-24 10:13:09 +02:00
wbsd.h
wmt-sdmmc.c mmc: wmt-sdmmc: Remove deprecated IRQF_DISABLED 2014-07-09 11:26:08 +02:00