- 18 Jan, 2014 2 commits
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Bing Zhao authored
Polling SDIO_CCCR_INTx could create a fake interrupt with Marvell SD8797 card. Add a quirk to handle this case. The fixup here is to issue a dummy CMD52 read to function 0 register 0xff, and this dummy read must be right after SDIO_CCCR_INTx is read. Patch has been verified on a dw_mmc controller (Samsung Chromebook) with MMC_CAP_SDIO_IRQ disabled. Signed-off-by:
Bing Zhao <bzhao@marvell.com> Reviewed-by:
Paul Stewart <pstew@chromium.org> Reviewed-by:
Doug Anderson <dianders@chromium.org> Acked-by:
Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by:
Chris Ball <chris@printf.net>
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Aisheng Dong authored
The sdhci_execute_tuning routine gets lock separately by disable_irq(host->irq); spin_lock(&host->lock); It will cause the following lockdep error message since the &host->lock could also be got in irq context. Use spin_lock_irqsave/spin_unlock_restore instead to get rid of this error message. [ INFO: inconsistent lock state ] 3.13.0-rc1+ #287 Not tainted --------------------------------- inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage. kworker/u2:1/33 [HC0[0]:SC0[0]:HE1:SE1] takes: (&(&host->lock)->rlock){?.-...}, at: [<8045f7f4>] sdhci_execute_tuning+0x4c/0x710 {IN-HARDIRQ-W} state was registered at: [<8005f030>] mark_lock+0x140/0x6ac [<80060760>] __lock_acquire+0xb30/0x1cbc [<800620d0>] lock_acquire+0x70/0x84 [<8061d1c8>] _raw_spin_lock+0x30/0x40 [<804605cc>] sdhci_irq+0x24/0xa68 [<8006b1d4>] handle_irq_event_percpu+0x54/0x18c [<8006b350>] handle_irq_event+0x44/0x64 [<8006e50c>] handle_fasteoi_irq+0xa0/0x170 [<8006a8f0>] generic_handle_irq+0x30/0x44 [<8000f238>] handle_IRQ+0x54/0xbc [<8000864c>] gic_handle_irq+0x30/0x64 [<80013024>] __irq_svc+0x44/0x5c [<80329bf4>] dev_vprintk_emit+0x50/0x58 [<80329c24>] dev_printk_emit+0x28/0x30 [<80329fec>] __dev_printk+0x4c/0x90 [<8032a180>] dev_err+0x3c/0x48 [<802dd4f0>] _regulator_get+0x158/0x1cc [<802dd5b4>] regulator_get_optional+0x18/0x1c [<80461df4>] sdhci_add_host+0x42c/0xbd8 [<80464820>] sdhci_esdhc_imx_probe+0x378/0x67c [<8032ee88>] platform_drv_probe+0x20/0x50 [<8032d48c>] driver_probe_device+0x118/0x234 [<8032d690>] __driver_attach+0x9c/0xa0 [<8032b89c>] bus_for_each_dev+0x68/0x9c [<8032cf44>] driver_attach+0x20/0x28 [<8032cbc8>] bus_add_driver+0x148/0x1f4 [<8032dce0>] driver_register+0x80/0x100 [<8032ee54>] __platform_driver_register+0x50/0x64 [<8084b094>] sdhci_esdhc_imx_driver_init+0x18/0x20 [<80008980>] do_one_initcall+0x108/0x16c [<8081cca4>] kernel_init_freeable+0x10c/0x1d0 [<80611b28>] kernel_init+0x10/0x120 [<8000e9c8>] ret_from_fork+0x14/0x2c irq event stamp: 805 hardirqs last enabled at (805): [<8061d43c>] _raw_spin_unlock_irqrestore+0x38/0x4c hardirqs last disabled at (804): [<8061d2c8>] _raw_spin_lock_irqsave+0x24/0x54 softirqs last enabled at (570): [<8002b824>] __do_softirq+0x1c4/0x290 softirqs last disabled at (561): [<8002bcf4>] irq_exit+0xb4/0x10c other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&(&host->lock)->rlock); <Interrupt> lock(&(&host->lock)->rlock); *** DEADLOCK *** 2 locks held by kworker/u2:1/33: #0: (kmmcd){.+.+..}, at: [<8003db18>] process_one_work+0x128/0x468 #1: ((&(&host->detect)->work)){+.+...}, at: [<8003db18>] process_one_work+0x128/0x468 stack backtrace: CPU: 0 PID: 33 Comm: kworker/u2:1 Not tainted 3.13.0-rc1+ #287 Workqueue: kmmcd mmc_rescan Backtrace: [<80012160>] (dump_backtrace+0x0/0x10c) from [<80012438>] (show_stack+0x18/0x1c) r6:bfad0900 r5:00000000 r4:8088ecc8 r3:bfad0900 [<80012420>] (show_stack+0x0/0x1c) from [<806169ec>] (dump_stack+0x84/0x9c) [<80616968>] (dump_stack+0x0/0x9c) from [<806147b4>] (print_usage_bug+0x260/0x2d0) r5:8076ba88 r4:80977410 [<80614554>] (print_usage_bug+0x0/0x2d0) from [<8005f0d0>] (mark_lock+0x1e0/0x6ac) r9:8005e678 r8:00000000 r7:bfad0900 r6:00001015 r5:bfad0cd0 r4:00000002 [<8005eef0>] (mark_lock+0x0/0x6ac) from [<80060234>] (__lock_acquire+0x604/0x1cbc) [<8005fc30>] (__lock_acquire+0x0/0x1cbc) from [<800620d0>] (lock_acquire+0x70/0x84) [<80062060>] (lock_acquire+0x0/0x84) from [<8061d1c8>] (_raw_spin_lock+0x30/0x40) r7:00000000 r6:bfb63000 r5:00000000 r4:bfb60568 [<8061d198>] (_raw_spin_lock+0x0/0x40) from [<8045f7f4>] (sdhci_execute_tuning+0x4c/0x710) r4:bfb60000 [<8045f7a8>] (sdhci_execute_tuning+0x0/0x710) from [<80453454>] (mmc_sd_init_card+0x5f8/0x660) [<80452e5c>] (mmc_sd_init_card+0x0/0x660) from [<80453748>] (mmc_attach_sd+0xb4/0x180) r9:bf92d400 r8:8065f364 r7:00061a80 r6:bfb60000 r5:8065f358 r4:bfb60000 [<80453694>] (mmc_attach_sd+0x0/0x180) from [<8044d9f8>] (mmc_rescan+0x284/0x2f0) r5:8065f358 r4:bfb602f8 [<8044d774>] (mmc_rescan+0x0/0x2f0) from [<8003db94>] (process_one_work+0x1a4/0x468) r8:00000000 r7:bfb55eb0 r6:bf80dc00 r5:bfb602f8 r4:bfb35980 r3:8044d774 [<8003d9f0>] (process_one_work+0x0/0x468) from [<8003e850>] (worker_thread+0x118/0x3e0) [<8003e738>] (worker_thread+0x0/0x3e0) from [<80044de0>] (kthread+0xd4/0xf0) [<80044d0c>] (kthread+0x0/0xf0) from [<8000e9c8>] (ret_from_fork+0x14/0x2c) r7:00000000 r6:00000000 r5:80044d0c r4:bfb37b40 Signed-off-by:Dong Aisheng <b29396@freescale.com> Cc: stable <stable@vger.kernel.org> Signed-off-by:
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- 17 Jan, 2014 2 commits
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Zhangfei Gao authored
Remove clk_table and directly use ios->clock as clock source rate. Abstract init clock rate and max clock limitation in clk.c Signed-off-by:
Zhangfei Gao <zhangfei.gao@linaro.org> Acked-by:
Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by:
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Zhangfei Gao authored
bf626e55 ("mmc: dw_mmc: use slot-gpio to handle cd pin") caused CDETECT to be ignored, since negated return value of mmc_gpio_get_cd(mmc) can not be checked by IS_ERR_VALUE. Also, add spin_lock_bh(&host->lock) for atomic access to DW_MMC_CARD_PRESENT, otherwise sd detect may occasionally fail. Signed-off-by:
Kevin Hilman <khilman@linaro.org> Reviewed-by:
Sachin Kamat <sachin.kamat@linaro.org> Tested-by:
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- 14 Jan, 2014 1 commit
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Wei Yongjun authored
Fixes the following sparse warning: drivers/mmc/host/dw_mmc-k3.c:116:1: warning: symbol 'dw_mci_k3_pmops' was not declared. Should it be static? Signed-off-by:
Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by:
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- 13 Jan, 2014 35 commits
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Dong Aisheng authored
Since the clock is managed by runtime pm currently, we do not need disable it again during driver remove function, or it will cause clock disable count mismatch issue since the clocks have already been disabled. The issue can be simply reproduced by unbind the devices via sysfs. mx6slevk:/sys/bus/platform/drivers/sdhci-esdhc-imx# echo 2194000.usdhc > unbind mmc1: card aaaa removed ------------[ cut here ]------------ WARNING: CPU: 0 PID: 657 at drivers/clk/clk.c:842 __clk_disable+0x68/0x88() Modules linked in: CPU: 0 PID: 657 Comm: sh Not tainted 3.13.0-rc1+ #285 Backtrace: [<80012160>] (dump_backtrace+0x0/0x10c) from [<80012438>] (show_stack+0x18/0x1c) r6:80481370 r5:00000000 r4:8088ecc8 r3:00000000 [<80012420>] (show_stack+0x0/0x1c) from [<80616b14>] (dump_stack+0x84/0x9c) [<80616a90>] (dump_stack+0x0/0x9c) from [<80027158>] (warn_slowpath_common+0x70/0x94) r5:00000009 r4:00000000 [<800270e8>] (warn_slowpath_common+0x0/0x94) from [<80027220>] (warn_slowpath_null+0x24/0x2c) r8:bec4ff78 r7:0000000e r6:bf91d800 r5:bf81d080 r4:bf81d080 [<800271fc>] (warn_slowpath_null+0x0/0x2c) from [<80481370>] (__clk_disable+0x68/0x88) [<80481308>] (__clk_disable+0x0/0x88) from [<8048148c>] (clk_disable+0x20/0x2c) r4:200f0113 r3:bf95ec00 [<8048146c>] (clk_disable+0x0/0x2c) from [<80463bd8>] (sdhci_esdhc_imx_remove+0x64/0xa4) r5:bf81d080 r4:bfabb010 [<80463b74>] (sdhci_esdhc_imx_remove+0x0/0xa4) from [<8032e82c>] (platform_drv_remove+0x20/0x24) r6:808ae0e0 r5:808ae0e0 r4:bf91d810 r3:80463b74 [<8032e80c>] (platform_drv_remove+0x0/0x24) from [<8032d010>] (__device_release_driver+0x78/0xd0) [<8032cf98>] (__device_release_driver+0x0/0xd0) from [<8032d090>] (device_release_driver+0x28/0x34) r5:bf91d810 r4:bf91d844 [<8032d068>] (device_release_driver+0x0/0x34) from [<8032c0c8>] (unbind_store+0x80/0xc4) r5:bf91d810 r4:80899ba0 [<8032c048>] (unbind_store+0x0/0xc4) from [<8032b648>] (drv_attr_store+0x28/0x34) r7:bed73100 r6:0000000e r5:00000000 r4:8032b620 [<8032b620>] (drv_attr_store+0x0/0x34) from [<80140580>] (sysfs_write_file+0x1b0/0x1e4) [<801403d0>] (sysfs_write_file+0x0/0x1e4) from [<800dcda0>] (vfs_write+0xb4/0x190) [<800dccec>] (vfs_write+0x0/0x190) from [<800dd3e4>] (SyS_write+0x44/0x80) r9:0000000e r8:00000000 r7:01a00408 r6:bf3b1c00 r5:00000000 r4:00000000 [<800dd3a0>] (SyS_write+0x0/0x80) from [<8000e900>] (ret_fast_syscall+0x0/0x48) r9:bec4e000 r8:8000eac4 r7:00000004 r6:76f5fb40 r5:01a00408 r4:0000000e ---[ end trace a0897d268e6233b2 ]--- If without runtime pm, we just run as before to match the clock enable in probe function. Signed-off-by:
Shawn Guo <shawn.guo@linaro.org> Signed-off-by:
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Dong Aisheng authored
Sometimes we may meet the following lockdep issue. The root cause is .set_clock callback is executed with spin_lock_irqsave in sdhci_do_set_ios. However, the IMX set_clock callback will try to access clk_get_rate which is using a mutex lock. The fix avoids access mutex in .set_clock callback by initializing the pltfm_host->clock at probe time and use it later instead of calling clk_get_rate again in atomic context. [ INFO: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected ] 3.13.0-rc1+ #285 Not tainted ------------------------------------------------------ kworker/u8:1/29 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: (prepare_lock){+.+...}, at: [<80480b08>] clk_prepare_lock+0x44/0xe4 and this task is already holding: (&(&host->lock)->rlock#2){-.-...}, at: [<804611f4>] sdhci_do_set_ios+0x20/0x720 which would create a new lock dependency: (&(&host->lock)->rlock#2){-.-...} -> (prepare_lock){+.+...} but this new dependency connects a HARDIRQ-irq-safe lock: (&(&host->lock)->rlock#2){-.-...} ... which became HARDIRQ-irq-safe at: [<8005f030>] mark_lock+0x140/0x6ac [<80060760>] __lock_acquire+0xb30/0x1cbc [<800620d0>] lock_acquire+0x70/0x84 [<8061d2f0>] _raw_spin_lock+0x30/0x40 [<80460668>] sdhci_irq+0x24/0xa68 [<8006b1d4>] handle_irq_event_percpu+0x54/0x18c [<8006b350>] handle_irq_event+0x44/0x64 [<8006e50c>] handle_fasteoi_irq+0xa0/0x170 [<8006a8f0>] generic_handle_irq+0x30/0x44 [<8000f238>] handle_IRQ+0x54/0xbc [<8000864c>] gic_handle_irq+0x30/0x64 [<80013024>] __irq_svc+0x44/0x5c [<80614c58>] printk+0x38/0x40 [<804622a8>] sdhci_add_host+0x844/0xbcc [<80464948>] sdhci_esdhc_imx_probe+0x378/0x67c [<8032ee88>] platform_drv_probe+0x20/0x50 [<8032d48c>] driver_probe_device+0x118/0x234 [<8032d690>] __driver_attach+0x9c/0xa0 [<8032b89c>] bus_for_each_dev+0x68/0x9c [<8032cf44>] driver_attach+0x20/0x28 [<8032cbc8>] bus_add_driver+0x148/0x1f4 [<8032dce0>] driver_register+0x80/0x100 [<8032ee54>] __platform_driver_register+0x50/0x64 [<8084b094>] sdhci_esdhc_imx_driver_init+0x18/0x20 [<80008980>] do_one_initcall+0x108/0x16c [<8081cca4>] kernel_init_freeable+0x10c/0x1d0 [<80611c50>] kernel_init+0x10/0x120 [<8000e9c8>] ret_from_fork+0x14/0x2c to a HARDIRQ-irq-unsafe lock: (prepare_lock){+.+...} ... which became HARDIRQ-irq-unsafe at: ... [<8005f030>] mark_lock+0x140/0x6ac [<8005f604>] mark_held_locks+0x68/0x12c [<8005f780>] trace_hardirqs_on_caller+0xb8/0x1d8 [<8005f8b4>] trace_hardirqs_on+0x14/0x18 [<8061a130>] mutex_trylock+0x180/0x20c [<80480ad8>] clk_prepare_lock+0x14/0xe4 [<804816a4>] clk_notifier_register+0x28/0xf0 [<80015120>] twd_clk_init+0x50/0x68 [<80008980>] do_one_initcall+0x108/0x16c [<8081cca4>] kernel_init_freeable+0x10c/0x1d0 [<80611c50>] kernel_init+0x10/0x120 [<8000e9c8>] ret_from_fork+0x14/0x2c other info that might help us debug this: Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(prepare_lock); local_irq_disable(); lock(&(&host->lock)->rlock#2); lock(prepare_lock); <Interrupt> lock(&(&host->lock)->rlock#2); *** DEADLOCK *** 3 locks held by kworker/u8:1/29: #0: (kmmcd){.+.+.+}, at: [<8003db18>] process_one_work+0x128/0x468 #1: ((&(&host->detect)->work)){+.+.+.}, at: [<8003db18>] process_one_work+0x128/0x468 #2: (&(&host->lock)->rlock#2){-.-...}, at: [<804611f4>] sdhci_do_set_ios+0x20/0x720 the dependencies between HARDIRQ-irq-safe lock and the holding lock: -> (&(&host->lock)->rlock#2){-.-...} ops: 330 { IN-HARDIRQ-W at: [<8005f030>] mark_lock+0x140/0x6ac [<80060760>] __lock_acquire+0xb30/0x1cbc [<800620d0>] lock_acquire+0x70/0x84 [<8061d2f0>] _raw_spin_lock+0x30/0x40 [<80460668>] sdhci_irq+0x24/0xa68 [<8006b1d4>] handle_irq_event_percpu+0x54/0x18c [<8006b350>] handle_irq_event+0x44/0x64 [<8006e50c>] handle_fasteoi_irq+0xa0/0x170 [<8006a8f0>] generic_handle_irq+0x30/0x44 [<8000f238>] handle_IRQ+0x54/0xbc [<8000864c>] gic_handle_irq+0x30/0x64 [<80013024>] __irq_svc+0x44/0x5c [<80614c58>] printk+0x38/0x40 [<804622a8>] sdhci_add_host+0x844/0xbcc [<80464948>] sdhci_esdhc_imx_probe+0x378/0x67c [<8032ee88>] platform_drv_probe+0x20/0x50 [<8032d48c>] driver_probe_device+0x118/0x234 [<8032d690>] __driver_attach+0x9c/0xa0 [<8032b89c>] bus_for_each_dev+0x68/0x9c [<8032cf44>] driver_attach+0x20/0x28 [<8032cbc8>] bus_add_driver+0x148/0x1f4 [<8032dce0>] driver_register+0x80/0x100 [<8032ee54>] __platform_driver_register+0x50/0x64 [<8084b094>] sdhci_esdhc_imx_driver_init+0x18/0x20 [<80008980>] do_one_initcall+0x108/0x16c [<8081cca4>] kernel_init_freeable+0x10c/0x1d0 [<80611c50>] kernel_init+0x10/0x120 [<8000e9c8>] ret_from_fork+0x14/0x2c IN-SOFTIRQ-W at: [<8005f030>] mark_lock+0x140/0x6ac [<80060204>] __lock_acquire+0x5d4/0x1cbc [<800620d0>] lock_acquire+0x70/0x84 [<8061d40c>] _raw_spin_lock_irqsave+0x40/0x54 [<8045e4a4>] sdhci_tasklet_finish+0x1c/0x120 [<8002b538>] tasklet_action+0xa0/0x15c [<8002b778>] __do_softirq+0x118/0x290 [<8002bcf4>] irq_exit+0xb4/0x10c [<8000f240>] handle_IRQ+0x5c/0xbc [<8000864c>] gic_handle_irq+0x30/0x64 [<80013024>] __irq_svc+0x44/0x5c [<80614c58>] printk+0x38/0x40 [<804622a8>] sdhci_add_host+0x844/0xbcc [<80464948>] sdhci_esdhc_imx_probe+0x378/0x67c [<8032ee88>] platform_drv_probe+0x20/0x50 [<8032d48c>] driver_probe_device+0x118/0x234 [<8032d690>] __driver_attach+0x9c/0xa0 [<8032b89c>] bus_for_each_dev+0x68/0x9c [<8032cf44>] driver_attach+0x20/0x28 [<8032cbc8>] bus_add_driver+0x148/0x1f4 [<8032dce0>] driver_register+0x80/0x100 [<8032ee54>] __platform_driver_register+0x50/0x64 [<8084b094>] sdhci_esdhc_imx_driver_init+0x18/0x20 [<80008980>] do_one_initcall+0x108/0x16c [<8081cca4>] kernel_init_freeable+0x10c/0x1d0 [<80611c50>] kernel_init+0x10/0x120 [<8000e9c8>] ret_from_fork+0x14/0x2c INITIAL USE at: [<8005f030>] mark_lock+0x140/0x6ac [<8005ff0c>] __lock_acquire+0x2dc/0x1cbc [<800620d0>] lock_acquire+0x70/0x84 [<8061d40c>] _raw_spin_lock_irqsave+0x40/0x54 [<804611f4>] sdhci_do_set_ios+0x20/0x720 [<80461924>] sdhci_set_ios+0x30/0x3c [<8044cea0>] mmc_power_up+0x6c/0xd0 [<8044dac4>] mmc_start_host+0x60/0x70 [<8044eb3c>] mmc_add_host+0x60/0x88 [<8046225c>] sdhci_add_host+0x7f8/0xbcc [<80464948>] sdhci_esdhc_imx_probe+0x378/0x67c [<8032ee88>] platform_drv_probe+0x20/0x50 [<8032d48c>] driver_probe_device+0x118/0x234 [<8032d690>] __driver_attach+0x9c/0xa0 [<8032b89c>] bus_for_each_dev+0x68/0x9c [<8032cf44>] driver_attach+0x20/0x28 [<8032cbc8>] bus_add_driver+0x148/0x1f4 [<8032dce0>] driver_register+0x80/0x100 [<8032ee54>] __platform_driver_register+0x50/0x64 [<8084b094>] sdhci_esdhc_imx_driver_init+0x18/0x20 [<80008980>] do_one_initcall+0x108/0x16c [<8081cca4>] kernel_init_freeable+0x10c/0x1d0 [<80611c50>] kernel_init+0x10/0x120 [<8000e9c8>] ret_from_fork+0x14/0x2c } ... key at: [<80e040e8>] __key.26952+0x0/0x8 ... acquired at: [<8005eb60>] check_usage+0x3d0/0x5c0 [<8005edac>] check_irq_usage+0x5c/0xb8 [<80060d38>] __lock_acquire+0x1108/0x1cbc [<800620d0>] lock_acquire+0x70/0x84 [<8061a210>] mutex_lock_nested+0x54/0x3c0 [<80480b08>] clk_prepare_lock+0x44/0xe4 [<8048188c>] clk_get_rate+0x14/0x64 [<8046374c>] esdhc_pltfm_set_clock+0x20/0x2a4 [<8045d70c>] sdhci_set_clock+0x4c/0x498 [<80461518>] sdhci_do_set_ios+0x344/0x720 [<80461924>] sdhci_set_ios+0x30/0x3c [<8044c390>] __mmc_set_clock+0x44/0x60 [<8044cd4c>] mmc_set_clock+0x10/0x14 [<8044f8f4>] mmc_init_card+0x1b4/0x1520 [<80450f00>] mmc_attach_mmc+0xb4/0x194 [<8044da08>] mmc_rescan+0x294/0x2f0 [<8003db94>] process_one_work+0x1a4/0x468 [<8003e850>] worker_thread+0x118/0x3e0 [<80044de0>] kthread+0xd4/0xf0 [<8000e9c8>] ret_from_fork+0x14/0x2c the dependencies between the lock to be acquired and HARDIRQ-irq-unsafe lock: -> (prepare_lock){+.+...} ops: 395 { HARDIRQ-ON-W at: [<8005f030>] mark_lock+0x140/0x6ac [<8005f604>] mark_held_locks+0x68/0x12c [<8005f780>] trace_hardirqs_on_caller+0xb8/0x1d8 [<8005f8b4>] trace_hardirqs_on+0x14/0x18 [<8061a130>] mutex_trylock+0x180/0x20c [<80480ad8>] clk_prepare_lock+0x14/0xe4 [<804816a4>] clk_notifier_register+0x28/0xf0 [<80015120>] twd_clk_init+0x50/0x68 [<80008980>] do_one_initcall+0x108/0x16c [<8081cca4>] kernel_init_freeable+0x10c/0x1d0 [<80611c50>] kernel_init+0x10/0x120 [<8000e9c8>] ret_from_fork+0x14/0x2c SOFTIRQ-ON-W at: [<8005f030>] mark_lock+0x140/0x6ac [<8005f604>] mark_held_locks+0x68/0x12c [<8005f7c8>] trace_hardirqs_on_caller+0x100/0x1d8 [<8005f8b4>] trace_hardirqs_on+0x14/0x18 [<8061a130>] mutex_trylock+0x180/0x20c [<80480ad8>] clk_prepare_lock+0x14/0xe4 [<804816a4>] clk_notifier_register+0x28/0xf0 [<80015120>] twd_clk_init+0x50/0x68 [<80008980>] do_one_initcall+0x108/0x16c [<8081cca4>] kernel_init_freeable+0x10c/0x1d0 [<80611c50>] kernel_init+0x10/0x120 [<8000e9c8>] ret_from_fork+0x14/0x2c INITIAL USE at: [<8005f030>] mark_lock+0x140/0x6ac [<8005ff0c>] __lock_acquire+0x2dc/0x1cbc [<800620d0>] lock_acquire+0x70/0x84 [<8061a0c8>] mutex_trylock+0x118/0x20c [<80480ad8>] clk_prepare_lock+0x14/0xe4 [<80482af8>] __clk_init+0x1c/0x45c [<8048306c>] _clk_register+0xd0/0x170 [<80483148>] clk_register+0x3c/0x7c [<80483b4c>] clk_register_fixed_rate+0x88/0xd8 [<80483c04>] of_fixed_clk_setup+0x68/0x94 [<8084c6fc>] of_clk_init+0x44/0x68 [<808202b0>] time_init+0x2c/0x38 [<8081ca14>] start_kernel+0x1e4/0x368 [<10008074>] 0x10008074 } ... key at: [<808afebc>] prepare_lock+0x38/0x48 ... acquired at: [<8005eb94>] check_usage+0x404/0x5c0 [<8005edac>] check_irq_usage+0x5c/0xb8 [<80060d38>] __lock_acquire+0x1108/0x1cbc [<800620d0>] lock_acquire+0x70/0x84 [<8061a210>] mutex_lock_nested+0x54/0x3c0 [<80480b08>] clk_prepare_lock+0x44/0xe4 [<8048188c>] clk_get_rate+0x14/0x64 [<8046374c>] esdhc_pltfm_set_clock+0x20/0x2a4 [<8045d70c>] sdhci_set_clock+0x4c/0x498 [<80461518>] sdhci_do_set_ios+0x344/0x720 [<80461924>] sdhci_set_ios+0x30/0x3c [<8044c390>] __mmc_set_clock+0x44/0x60 [<8044cd4c>] mmc_set_clock+0x10/0x14 [<8044f8f4>] mmc_init_card+0x1b4/0x1520 [<80450f00>] mmc_attach_mmc+0xb4/0x194 [<8044da08>] mmc_rescan+0x294/0x2f0 [<8003db94>] process_one_work+0x1a4/0x468 [<8003e850>] worker_thread+0x118/0x3e0 [<80044de0>] kthread+0xd4/0xf0 [<8000e9c8>] ret_from_fork+0x14/0x2c stack backtrace: CPU: 2 PID: 29 Comm: kworker/u8:1 Not tainted 3.13.0-rc1+ #285 Workqueue: kmmcd mmc_rescan Backtrace: [<80012160>] (dump_backtrace+0x0/0x10c) from [<80012438>] (show_stack+0x18/0x1c) r6:00000000 r5:00000000 r4:8088ecc8 r3:bfa11200 [<80012420>] (show_stack+0x0/0x1c) from [<80616b14>] (dump_stack+0x84/0x9c) [<80616a90>] (dump_stack+0x0/0x9c) from [<8005ebb4>] (check_usage+0x424/0x5c0) r5:80979940 r4:bfa29b44 [<8005e790>] (check_usage+0x0/0x5c0) from [<8005edac>] (check_irq_usage+0x5c/0xb8) [<8005ed50>] (check_irq_usage+0x0/0xb8) from [<80060d38>] (__lock_acquire+0x1108/0x1cbc) r8:bfa115e8 r7:80df9884 r6:80dafa9c r5:00000003 r4:bfa115d0 [<8005fc30>] (__lock_acquire+0x0/0x1cbc) from [<800620d0>] (lock_acquire+0x70/0x84) [<80062060>] (lock_acquire+0x0/0x84) from [<8061a210>] (mutex_lock_nested+0x54/0x3c0) r7:bfa11200 r6:80dafa9c r5:00000000 r4:80480b08 [<8061a1bc>] (mutex_lock_nested+0x0/0x3c0) from [<80480b08>] (clk_prepare_lock+0x44/0xe4) [<80480ac4>] (clk_prepare_lock+0x0/0xe4) from [<8048188c>] (clk_get_rate+0x14/0x64) r6:03197500 r5:bf0e9aa8 r4:bf827400 r3:808ae128 [<80481878>] (clk_get_rate+0x0/0x64) from [<8046374c>] (esdhc_pltfm_set_clock+0x20/0x2a4) r5:bf0e9aa8 r4:bf0e9c40 [<8046372c>] (esdhc_pltfm_set_clock+0x0/0x2a4) from [<8045d70c>] (sdhci_set_clock+0x4c/0x498) [<8045d6c0>] (sdhci_set_clock+0x0/0x498) from [<80461518>] (sdhci_do_set_ios+0x344/0x720) r8:0000003b r7:20000113 r6:bf0e9d68 r5:bf0e9aa8 r4:bf0e9c40 r3:00000000 [<804611d4>] (sdhci_do_set_ios+0x0/0x720) from [<80461924>] (sdhci_set_ios+0x30/0x3c) r9:00000004 r8:bf131000 r7:bf131048 r6:00000000 r5:bf0e9aa8 r4:bf0e9800 [<804618f4>] (sdhci_set_ios+0x0/0x3c) from [<8044c390>] (__mmc_set_clock+0x44/0x60) r5:03197500 r4:bf0e9800 [<8044c34c>] (__mmc_set_clock+0x0/0x60) from [<8044cd4c>] (mmc_set_clock+0x10/0x14) r5:00000000 r4:bf0e9800 [<8044cd3c>] (mmc_set_clock+0x0/0x14) from [<8044f8f4>] (mmc_init_card+0x1b4/0x1520) [<8044f740>] (mmc_init_card+0x0/0x1520) from [<80450f00>] (mmc_attach_mmc+0xb4/0x194) [<80450e4c>] (mmc_attach_mmc+0x0/0x194) from [<8044da08>] (mmc_rescan+0x294/0x2f0) r5:8065f358 r4:bf0e9af8 [<8044d774>] (mmc_rescan+0x0/0x2f0) from [<8003db94>] (process_one_work+0x1a4/0x468) r8:00000000 r7:bfa29eb0 r6:bf80dc00 r5:bf0e9af8 r4:bf9e3f00 r3:8044d774 [<8003d9f0>] (process_one_work+0x0/0x468) from [<8003e850>] (worker_thread+0x118/0x3e0) [<8003e738>] (worker_thread+0x0/0x3e0) from [<80044de0>] (kthread+0xd4/0xf0) [<80044d0c>] (kthread+0x0/0xf0) from [<8000e9c8>] (ret_from_fork+0x14/0x2c) r7:00000000 r6:00000000 r5:80044d0c r4:bf9e7f00 Fixes: 0ddf03c9 mmc: esdhc-imx: parse max-frequency from devicetree Signed-off-by:Philippe De Muyter <phdm@macqel.be> Cc: stable <stable@vger.kernel.org> # 3.13 Signed-off-by:
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Wolfram Sang authored
This reverts and updates commit 77776fd0 ("mmc: sd: fix the maximum au_size for SD3.0"). The au_size for SD3.0 cannot be achieved by a simple bit shift, so this needs to be implemented differently. Also, don't print the warning in case of 0 since 'not defined' is different from 'invalid'. Signed-off-by:
Wolfram Sang <wsa@the-dreams.de> Acked-by:
Jaehoon Chung <jh80.chung@samsung.com> Reviewed-by:
H Hartley Sweeten <hsweeten@visionengravers.com> Cc: stable <stable@vger.kernel.org> # [3.12, 3.13] Signed-off-by:
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Alexandre Belloni authored
Other MMC hosts handle a regulator named vmmc-supply that allows to power the MMC card or SDIO device before communicating on the bus. Signed-off-by:
Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by:
Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by:
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David Cohen authored
Due to unknown hw issue so far, Merrifield is unable to enable HS200 support. This patch adds quirk to avoid SDHCI to initialize with error below: [ 53.850132] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 3.12.0-rc6-00037-g3d7c8d9-dirty #36 [ 53.850150] Hardware name: Intel Corporation Merrifield/SALT BAY, BIOS 397 2013.09.12:11.51.40 [ 53.850167] 00000000 00000000 ee409e48 c18816d2 00000000 ee409e78 c123e254 c1acc9b0 [ 53.850227] 00000000 00000000 c1b14148 000003de c16c03bf c16c03bf ee75b480 ed97c54c [ 53.850282] ee75b480 ee409e88 c123e292 00000009 00000000 ee409ef8 c16c03bf c1207fac [ 53.850339] Call Trace: [ 53.850376] [<c18816d2>] dump_stack+0x4b/0x79 [ 53.850408] [<c123e254>] warn_slowpath_common+0x84/0xa0 [ 53.850436] [<c16c03bf>] ? sdhci_send_command+0xb4f/0xc50 [ 53.850462] [<c16c03bf>] ? sdhci_send_command+0xb4f/0xc50 [ 53.850490] [<c123e292>] warn_slowpath_null+0x22/0x30 [ 53.850516] [<c16c03bf>] sdhci_send_command+0xb4f/0xc50 [ 53.850545] [<c1207fac>] ? native_sched_clock+0x2c/0xb0 [ 53.850575] [<c14c1f93>] ? delay_tsc+0x73/0xb0 [ 53.850601] [<c14c1ebe>] ? __const_udelay+0x1e/0x20 [ 53.850626] [<c16bdeb3>] ? sdhci_reset+0x93/0x190 [ 53.850654] [<c16c05b0>] sdhci_finish_data+0xf0/0x2e0 [ 53.850683] [<c16c130f>] sdhci_irq+0x31f/0x930 [ 53.850713] [<c12cb080>] ? __buffer_unlock_commit+0x10/0x20 [ 53.850740] [<c12cbcd7>] ? trace_buffer_unlock_commit+0x37/0x50 [ 53.850773] [<c1288f3c>] handle_irq_event_percpu+0x5c/0x220 [ 53.850800] [<c128bc96>] ? handle_fasteoi_irq+0x16/0xd0 [ 53.850827] [<c128913a>] handle_irq_event+0x3a/0x60 [ 53.850852] [<c128bc80>] ? unmask_irq+0x30/0x30 [ 53.850878] [<c128bcce>] handle_fasteoi_irq+0x4e/0xd0 [ 53.850895] <IRQ> [<c1890b52>] ? do_IRQ+0x42/0xb0 [ 53.850943] [<c1890a31>] ? common_interrupt+0x31/0x38 [ 53.850973] [<c12b00d8>] ? cgroup_mkdir+0x4e8/0x580 [ 53.851001] [<c1208d32>] ? default_idle+0x22/0xf0 [ 53.851029] [<c1209576>] ? arch_cpu_idle+0x26/0x30 [ 53.851054] [<c1288505>] ? cpu_startup_entry+0x65/0x240 [ 53.851082] [<c18793d5>] ? rest_init+0xb5/0xc0 [ 53.851108] [<c1879320>] ? __read_lock_failed+0x18/0x18 [ 53.851138] [<c1bf6a15>] ? start_kernel+0x31b/0x321 [ 53.851164] [<c1bf652f>] ? repair_env_string+0x51/0x51 [ 53.851190] [<c1bf6363>] ? i386_start_kernel+0x139/0x13c [ 53.851209] ---[ end trace 92777f5fe48d33f2 ]--- [ 53.853449] mmcblk0: error -84 transferring data, sector 11142162, nr 304, cmd response 0x0, card status 0x0 [ 53.853476] mmcblk0: retrying using single block read [ 55.937863] sdhci: Timeout waiting for Buffer Read Ready interrupt during tuning procedure, falling back to fixed sampling clock [ 56.207951] sdhci: Timeout waiting for Buffer Read Ready interrupt during tuning procedure, falling back to fixed sampling clock [ 66.228785] mmc0: Timeout waiting for hardware interrupt. [ 66.230855] ------------[ cut here ]------------ Signed-off-by:
David Cohen <david.a.cohen@linux.intel.com> Reviewed-by:
Chuanxiao Dong <chuanxiao.dong@intel.com> Acked-by:
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David Cohen authored
This patch defines a quirk for platforms unable to enable HS200 support. Signed-off-by:
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Soren Brinkmann authored
Add a driver for Arasan's SDHCI controller core. Signed-off-by:
Soren Brinkmann <soren.brinkmann@xilinx.com> Acked-by: Rob Herring <rob.herring@calxeda.com> [binding] Acked-by:
Michal Simek <monstr@monstr.eu> Signed-off-by:
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Zhangfei Gao authored
Add dw_mmc-k3.c for k3v2, support sd/emmc Signed-off-by:
Zhigang Wang <brooke.wangzhigang@huawei.com> Acked-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Zhangfei Gao authored
Suggested by Jaehoon: Use slot-gpio to handle cd-gpio Add function dw_mci_of_get_cd_gpio to check "cd-gpios" from dts. mmc_gpio_request_cd and mmc_gpio_get_cd are used to handle cd pin Signed-off-by:
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Adam Lee authored
Add O2Micro/BayHubTech SD Host DeviceId 8520 support. Add O2Micro/BayHubTech SD Host DeviceId 8420 & 8421 support. Add O2Micro/BayHubTech SD Host DeviceId 8620 & 8621 support. These card readers are used in laptops like Lenovo ThinkPad W540, Dell Latitude E5440, Dell Latitude E6540. Signed-off-by:
Peter Guo <peter.guo@bayhubtech.com> Signed-off-by:
Adam Lee <adam.lee@canonical.com> Signed-off-by:
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Adam Lee authored
Break out definitions in sdhci-pci.c to sdhci-pci.h, for introducing module files like sdhci-pci-xxx.c Signed-off-by:
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Kuninori Morimoto authored
This patch fixes the below compile error: ${LINUX}/drivers/mmc/host/tmio_mmc.c: In function 'tmio_mmc_probe': ${LINUX}/drivers/mmc/host/tmio_mmc.c:93:35: \ error: 'res_ctl' undeclared (first use in this function) ${LINUX}/drivers/mmc/host/tmio_mmc.c:93:35: \ note: each undeclared identifier is reported only \ once for each function it appears in Reported-by:Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Acked-by:
Simon Horman <horms+renesas@verge.net.au> Signed-off-by:
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Chris Ball authored
I'm no longer at OLPC. (The old email address still works for now.) Signed-off-by: -
Laurent Pinchart authored
This helps increasing build testing coverage. Signed-off-by:
Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by:
Simon Horman <horms@verge.net.au> Signed-off-by:
Chris Ball <cjb@laptop.org>
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Laurent Pinchart authored
This helps increasing build testing coverage. The driver doesn't compile on (at least) x86 due (possibly among others) to missing readsw/writesw I/O accessors, restrict compilation to SUPERH or ARM. Whether the CTL_DMA_ENABLE register is part of the standard TMIO controller or is Renesas-specific is unknown and impossible to test as we have no current or planned TMIO DMA users other than SUPERH and ARCH_SHMOBILE. Writing to the register is thus conditionally compiled for SUPERH and ARCH_SHMOBILE only. Adding ARCH_SHMOBILE_MULTI to the list would extend this to multiarch kernels, but would break the driver for non-shmobile platforms if the register is Renesas-specific. We can thus get rid of the conditional compilation completely without introducing any further issue, and let future non-Renesas users deal with the situation if it turns out to be a the problem. Signed-off-by:
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Stephen Warren authored
Tegra124's MMC controller is very similar to earlier SoC generations, and can be supported by the same driver. However, there are some non-backwards-compatible HW differences, and hence a new DT compatible value must be used to describe the HW. This patch updates the driver to support that new compatible value. That said, the HW differences are only relevant when enabling certain high-performance transfer modes. Since the driver is currently very simple and doesn't enable those modes, we don't actually need to address any of these HW differences in the code yet, hence the simple nature of this patch. Signed-off-by:
Stephen Warren <swarren@nvidia.com> Reviewed-by:
Thierry Reding <treding@nvidia.com> Signed-off-by:
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Laurent Pinchart authored
Casting an integer to a void * generates a "cast to pointer from integer of different size" warning. Cast the integer to an unsigned long first to fix it. Signed-off-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:
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Laurent Pinchart authored
The channel request and configuration code is duplicated for the rx and tx channels. Create a function that requests a single channel and call it twice instead. Signed-off-by:
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Kuninori Morimoto authored
One of Renesas SDHI chip needs workaround to use it, and, we can judge it based on chip version. This patch adds very quick-hack workaround method, since we still don't know how many chips need workaround in the future. Signed-off-by:
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Kuninori Morimoto authored
The accessibility checking method to the higher register was added by 69d1fe18 (mmc: tmio: only access registers above 0xff, if available) But, it doesn't care 32bit register. It is impossible to calculate it from the resource size, since there is 16/32 bit register IP (e.g. VERSION is located on 0xe2 if 16bit register, but it is located on 0x1c4 if 32bit register). This patch adds new TMIO_MMC_HAVE_HIGH_REG flags, tmio_mmc driver has it, and sh_mobile_sdhi doesn't have it today. Signed-off-by:
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Kuninori Morimoto authored
.bus_shift is used to 16/32bit register access offset calculation on tmio driver. tmio_mmc_xxx is used from Toshiba/Renesas now, but this bus_shift value depends on HW IP. This patch moves .bus_shift to tmio_mmc_data member and sets it on each driver. Signed-off-by:
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Kuninori Morimoto authored
Current tmio driver tries to use default ocr_avail if 1) it couldn't find regulator and 2) if platform data doesn't have ocr_mask. But, there is no guarantee that regulator driver probe is faster than TMIO driver probe. TMIO driver will not use regulator in such case. By this patch, TMIO driver returns -EPROBE_DEFER if it couldn't find regulator and if platform doesn't have ocr_mask. Because, there is a possibility that regulator has not been probed, but the user expects it. This patch changes tmio_mmc_host_probe() behavior, but there is no user who has conflict. Signed-off-by:
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Sascha Hauer authored
Use generic helper function. This also adds support for the cd-gpios and max-frequency devicetree properties. Signed-off-by:
Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by:
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Sascha Hauer authored
This also fixes that the read-only gpio was used without being requested. Signed-off-by:
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Sascha Hauer authored
We have a MMC_CAP2_CD_ACTIVE_HIGH flag, so use it rather than a custom driver specific flag. Signed-off-by:
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Sascha Hauer authored
Use the standard MMC_CAP_NEEDS_POLL flag rather than a custom broken_cd flag. The original code used to just return true in the card detection function for broken card detection. The MMC_CAP_NEEDS_POLL works different, but was introduced for the same purpose, so assume the code works correct now. Signed-off-by:
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Sascha Hauer authored
The standard caps already have a MMC_CAP_NONREMOVABLE flag. Use it rather than a custom non_removable flag. Signed-off-by:
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Sascha Hauer authored
Non removable cards are always present, so do not call get_cd for them. Signed-off-by:
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Mika Westerberg authored
Newer Intel PCHs with LPSS have the same SDHCI controller than Haswell but ACPI ID is different. Add this ID to the driver list. Signed-off-by:
Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by:
Adrian Hunter <adrian.hunter@intel.com> Signed-off-by:
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Laurent Pinchart authored
Turn clk_enable() and clk_disable() calls into clk_prepare_enable() and clk_disable_unprepare() to get ready for the migration to the common clock framework. Signed-off-by:
Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by:
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Fabio Estevam authored
Fix the following sparse warning: drivers/mmc/host/sdhci-esdhc-imx.c:617:35: warning: Using plain integer as NULL pointer Signed-off-by:
Fabio Estevam <fabio.estevam@freescale.com> Cc: Shawn Guo <shawn.guo@linaro.org> Signed-off-by:
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Chuansheng Liu authored
In function sdhci_request(), it is possible to do the tuning execution like below: sdhci_request() { spin_lock_irqsave(&host->lock, flags); host->mrq = mrq; ... spin_unlock_irqrestore(&host->lock, flags); <=== Here it is possible one pending finish_tasklet get running and it will operate the original mrq, and notified the mrq is done, and causes memory corruption. sdhci_execute_tuning(mmc, tuning_opcode); spin_lock_irqsave(&host->lock, flags); host->mrq = mrq; ... } In the above race place, the original mrq should not be finished wrongly, so here before unlock the spinlock, we need to set the host->mrq to NULL to avoid this case. Signed-off-by:Liu, Chuansheng <chuansheng.liu@intel.com> Signed-off-by:
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Guennadi Liakhovetski authored
Since I'm currently unable to dedicate sufficient time to driver maintainership, remove myself from the maintainers list. Signed-off-by:
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Ludovic Desroches authored
With some SDIO devices, timeout errors can happen when reading data. To solve this issue, the DMA transfer has to be activated before sending the command to the device. This order is incorrect in PDC mode. So we have to take care if we are using DMA or PDC to know when to send the MMC command. Cc: stable <stable@vger.kernel.org> # 3.2+ Signed-off-by:
Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by:
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Kuninori Morimoto authored
02cb3221 ("mmc: tmio: support caps2 flags") added caps2 support on tmio, but it overwrites mmc_of_parse() settings. This patch fixes it. Signed-off-by:
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