linux/drivers/mmc/host
Russell King cb399da401 mmc: sdhci-esdhc-imx: fix lockdep splat upon tuning
=================================
[ INFO: inconsistent lock state ]
3.14.0-rc1+ #490 Not tainted
---------------------------------
inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage.
kworker/u8:0/6 [HC0[0]:SC0[0]:HE1:SE1] takes:
 (&(&host->lock)->rlock#2){?.-...}, at: [<c04b57a4>] esdhc_send_tuning_cmd+0x104/0x14c
{IN-HARDIRQ-W} state was registered at:
  [<c00652fc>] mark_lock+0x15c/0x6f8
  [<c0066354>] __lock_acquire+0xabc/0x1ca0
  [<c0067ad8>] lock_acquire+0xa0/0x130
  [<c0697a44>] _raw_spin_lock+0x34/0x44
  [<c04b0dbc>] sdhci_irq+0x20/0xa40
  [<c0071b1c>] handle_irq_event_percpu+0x74/0x284
  [<c0071d70>] handle_irq_event+0x44/0x64
  [<c0074db8>] handle_fasteoi_irq+0xac/0x140
  [<c007147c>] generic_handle_irq+0x28/0x38
  [<c000efd4>] handle_IRQ+0x40/0x98
  [<c0008584>] gic_handle_irq+0x30/0x64
  [<c0013144>] __irq_svc+0x44/0x58
  [<c0028fc8>] irq_exit+0xc0/0x120
  [<c000efd8>] handle_IRQ+0x44/0x98
  [<c0008584>] gic_handle_irq+0x30/0x64
  [<c0013144>] __irq_svc+0x44/0x58
  [<c068f398>] printk+0x3c/0x44
  [<c03191d0>] _regulator_get+0x1b4/0x1e0
  [<c031924c>] regulator_get+0x18/0x1c
  [<c049fbc4>] mmc_add_host+0x30/0x1c0
  [<c04b2e10>] sdhci_add_host+0x804/0xbbc
  [<c04b5318>] sdhci_esdhc_imx_probe+0x380/0x674
  [<c036d530>] platform_drv_probe+0x20/0x50
  [<c036b948>] driver_probe_device+0x120/0x234
  [<c036baf8>] __driver_attach+0x9c/0xa0
  [<c036a04c>] bus_for_each_dev+0x5c/0x90
  [<c036b418>] driver_attach+0x24/0x28
  [<c036b018>] bus_add_driver+0xe4/0x1d8
  [<c036c1b0>] driver_register+0x80/0xfc
  [<c036ce28>] __platform_driver_register+0x50/0x64
  [<c093706c>] sdhci_esdhc_imx_driver_init+0x18/0x20
  [<c0008834>] do_one_initcall+0x3c/0x164
  [<c0901c94>] kernel_init_freeable+0x104/0x1d0
  [<c068c45c>] kernel_init+0x10/0x118
  [<c000e768>] ret_from_fork+0x14/0x2c
irq event stamp: 5933
hardirqs last  enabled at (5933): [<c069813c>] _raw_spin_unlock_irqrestore+0x38/0x4c
hardirqs last disabled at (5932): [<c0697b04>] _raw_spin_lock_irqsave+0x24/0x60
softirqs last  enabled at (5914): [<c0028ba0>] __do_softirq+0x260/0x360
softirqs last disabled at (5909): [<c0028fc8>] irq_exit+0xc0/0x120

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&(&host->lock)->rlock#2);
  <Interrupt>
    lock(&(&host->lock)->rlock#2);

 *** DEADLOCK ***

2 locks held by kworker/u8:0/6:
 #0:  (kmmcd){.+.+.+}, at: [<c003d890>] process_one_work+0x134/0x4e8
 #1:  ((&(&host->detect)->work)){+.+.+.}, at: [<c003d890>] process_one_work+0x134/0x4e8

stack backtrace:
CPU: 2 PID: 6 Comm: kworker/u8:0 Not tainted 3.14.0-rc1+ #490
Workqueue: kmmcd mmc_rescan
Backtrace:
[<c00124a0>] (dump_backtrace) from [<c0012640>] (show_stack+0x18/0x1c)
[<c0012628>] (show_stack) from [<c069164c>] (dump_stack+0x70/0x8c)
[<c06915dc>] (dump_stack) from [<c068f080>] (print_usage_bug+0x274/0x2e4)
[<c068ee0c>] (print_usage_bug) from [<c0065774>] (mark_lock+0x5d4/0x6f8)
[<c00651a0>] (mark_lock) from [<c0065e6c>] (__lock_acquire+0x5d4/0x1ca0)
[<c0065898>] (__lock_acquire) from [<c0067ad8>] (lock_acquire+0xa0/0x130)
[<c0067a38>] (lock_acquire) from [<c0697a44>] (_raw_spin_lock+0x34/0x44)
[<c0697a10>] (_raw_spin_lock) from [<c04b57a4>] (esdhc_send_tuning_cmd+0x104/0x14c)
[<c04b56a0>] (esdhc_send_tuning_cmd) from [<c04b582c>] (esdhc_executing_tuning+0x40/0x100)
[<c04b57ec>] (esdhc_executing_tuning) from [<c04afa54>] (sdhci_execute_tuning+0xcc/0x754)
[<c04af988>] (sdhci_execute_tuning) from [<c04a4684>] (mmc_sd_init_card+0x65c/0x694)
[<c04a4028>] (mmc_sd_init_card) from [<c04a48f0>] (mmc_attach_sd+0xb0/0x184)
[<c04a4840>] (mmc_attach_sd) from [<c049eb28>] (mmc_rescan+0x26c/0x2e8)
[<c049e8bc>] (mmc_rescan) from [<c003d914>] (process_one_work+0x1b8/0x4e8)
[<c003d75c>] (process_one_work) from [<c003e090>] (worker_thread+0x13c/0x3f8)
[<c003df54>] (worker_thread) from [<c00449bc>] (kthread+0xcc/0xe8)
[<c00448f0>] (kthread) from [<c000e768>] (ret_from_fork+0x14/0x2c)

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Markus Pargmann <mpa@pengutronix.de>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
2014-05-22 07:26:33 -04:00
..
android-goldfish.c mmc: remove unnecessary platform_set_drvdata() 2013-05-26 14:23:23 -04:00
atmel-mci-regs.h
atmel-mci.c mmc: atmel: don't test host->data 2014-05-12 18:08:23 -04:00
au1xmmc.c mmc: au1xmmc: Move away from using deprecated APIs 2013-10-30 20:26:35 -04:00
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: enable bus-mastering mode 2013-08-25 00:10:12 -04:00
dw_mmc-pltfm.c mmc: dw_mmc: Add support for SOCFPGA's platform specific implementation 2014-02-26 21:30:12 -05:00
dw_mmc-pltfm.h mmc: remove use of __devexit 2012-11-28 12:28:18 -08:00
dw_mmc.c mmc: dw_mmc: restore the card-present checking point 2014-05-12 18:04:35 -04:00
dw_mmc.h mmc: dw_mmc: remove dw_mci_of_cd_gpio/wp_gpio() 2014-05-12 18:04:34 -04:00
jz4740_mmc.c mmc: jz4740: don't wait for PRG_DONE after stop command with R1 response 2014-05-12 18:08:22 -04:00
Kconfig mmc: moxart: Add MOXA ART SD/MMC driver 2014-05-12 18:05:16 -04:00
Makefile mmc: moxart: Add MOXA ART SD/MMC driver 2014-05-12 18:05:16 -04:00
mmc_spi.c mmc: mmc_spi: Remove platform data .get_cd() and .get_ro() callbacks 2013-08-24 23:58:06 -04:00
mmci.c mmc: mmci: clarify DDR timing mode between SD-UHS and eMMC 2014-04-20 16:59:41 -04:00
mmci.h MMC highlights for 3.15: 2014-04-09 08:39:39 -07:00
moxart-mmc.c mmc: moxart: Add MOXA ART SD/MMC driver 2014-05-12 18:05:16 -04:00
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: workaround for spurious irqs 2014-05-12 18:05:46 -04:00
mvsdio.h
mxcmmc.c mmc: mxcmmc: Use mmc_regulator_get_supply() API 2014-05-12 18:08:24 -04:00
mxs-mmc.c mmc: mxs: fix card detection function for broken card detect 2014-05-12 18:08:22 -04:00
of_mmc_spi.c mmc: mmc_spi: Support CD/RO GPIOs 2013-08-24 23:45:22 -04:00
omap_hsmmc.c mmc: omap: clarify DDR timing mode between SD-UHS and eMMC 2014-04-20 16:59:48 -04:00
omap.c mmc: omap: Add erase capability 2014-02-22 13:17:42 -05:00
pxamci.c mmc: pxamci: Remove redundant suspend and resume callbacks 2013-10-30 20:28:29 -04:00
pxamci.h
rtsx_pci_sdmmc.c mmc: rtsx: add R1-no-CRC mmc command type handle 2014-04-22 07:06:40 -04:00
rtsx_usb_sdmmc.c mmc: rtsx: fix possible linking error if built-in 2014-05-12 18:08:23 -04:00
s3cmci.c ARM: s3c24xx: explicit dependency on <plat/gpio-cfg.h> 2014-01-14 15:24:54 +01:00
s3cmci.h
sdhci-acpi.c mmc: sdhci: convert sdhci_set_clock() into a library function 2014-05-22 07:26:32 -04:00
sdhci-bcm2835.c mmc: sdhci: convert sdhci_set_clock() into a library function 2014-05-22 07:26:32 -04:00
sdhci-bcm-kona.c mmc: sdhci: convert sdhci_set_clock() into a library function 2014-05-22 07:26:32 -04:00
sdhci-cns3xxx.c mmc: sdhci: convert sdhci_set_clock() into a library function 2014-05-22 07:26:32 -04:00
sdhci-dove.c mmc: sdhci: convert sdhci_set_clock() into a library function 2014-05-22 07:26:32 -04:00
sdhci-esdhc-imx.c mmc: sdhci-esdhc-imx: fix lockdep splat upon tuning 2014-05-22 07:26:33 -04:00
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: sdhci-msm: Add platform_execute_tuning implementation 2014-03-26 21:27:39 -04:00
sdhci-of-arasan.c mmc: sdhci: convert sdhci_set_clock() into a library function 2014-05-22 07:26:32 -04:00
sdhci-of-esdhc.c mmc: sdhci: move setting mmc->actual_clock into set_clock handlers 2014-05-22 07:26:31 -04:00
sdhci-of-hlwd.c mmc: sdhci: convert sdhci_set_clock() into a library function 2014-05-22 07:26:32 -04:00
sdhci-pci-data.c
sdhci-pci-o2micro.c mmc: sdhci-pci: add support of O2Micro/BayHubTech SD hosts 2014-01-13 12:48:32 -05:00
sdhci-pci-o2micro.h mmc: sdhci-pci: add support of O2Micro/BayHubTech SD hosts 2014-01-13 12:48:32 -05:00
sdhci-pci.c mmc: sdhci: convert sdhci_set_clock() into a library function 2014-05-22 07:26:32 -04:00
sdhci-pci.h mmc: sdhci-pci: Fix BYT sd card getting stuck in runtime suspend 2014-01-20 10:31:08 -05:00
sdhci-pltfm.c mmc: sdhci: convert sdhci_set_clock() into a library function 2014-05-22 07:26:32 -04:00
sdhci-pltfm.h mmc: sdhci-pltfm: export pltfm suspend/resume api 2014-01-13 12:48:06 -05:00
sdhci-pxav2.c mmc: sdhci: convert sdhci_set_clock() into a library function 2014-05-22 07:26:32 -04:00
sdhci-pxav3.c mmc: sdhci: convert sdhci_set_clock() into a library function 2014-05-22 07:26:32 -04:00
sdhci-s3c-regs.h mmc: sdhci-s3c: remove platform dependencies 2013-04-19 13:51:23 +02:00
sdhci-s3c.c mmc: sdhci: convert sdhci_set_clock() into a library function 2014-05-22 07:26:32 -04:00
sdhci-sirf.c mmc: sdhci: convert sdhci_set_clock() into a library function 2014-05-22 07:26:32 -04:00
sdhci-spear.c mmc: sdhci: convert sdhci_set_clock() into a library function 2014-05-22 07:26:32 -04:00
sdhci-tegra.c mmc: sdhci: convert sdhci_set_clock() into a library function 2014-05-22 07:26:32 -04:00
sdhci.c mmc: sdhci: convert sdhci_set_clock() into a library function 2014-05-22 07:26:32 -04:00
sdhci.h mmc: sdhci: convert sdhci_set_clock() into a library function 2014-05-22 07:26:32 -04:00
sdricoh_cs.c mmc: sdricoh_cs: Move away from using deprecated APIs 2013-10-30 20:28:32 -04:00
sh_mmcif.c mmc: sh_mmcif: clarify DDR timing mode between SD-UHS and eMMC 2014-04-20 16:59:52 -04:00
sh_mobile_sdhi.c mmc: sdhi: update sh_mobile_sdhi_of_data for r8a7791 2014-02-22 13:06:23 -05:00
tifm_sd.c mmc: tifm_sd: Move away from using deprecated APIs 2013-10-30 20:28:23 -04:00
tmio_mmc_dma.c mmc: tmio: bus_shift become tmio_mmc_data member 2014-01-13 12:48:23 -05:00
tmio_mmc_pio.c mmc: tmio: Adapt to proper PM configs for exported functions 2014-02-13 22:58:09 -05:00
tmio_mmc.c mmc: tmio_mmc: Convert from legacy to modern PM ops 2014-02-13 22:58:01 -05:00
tmio_mmc.h mmc: tmio: Adapt to proper PM configs for exported functions 2014-02-13 22:58:09 -05:00
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: wbsd: Silence compiler warning 2013-11-08 14:32:03 -05:00
wbsd.h
wmt-sdmmc.c mmc: wmt-sdmmc: Fix NULL pointer dereference 2014-02-25 15:42:33 -05:00