From 3a56d360708ef13087eba87750435ef67740f8b5 Mon Sep 17 00:00:00 2001 From: Chander Kashyap Date: Fri, 14 Sep 2012 09:08:50 +0000 Subject: [PATCH] mmc: sdhci-s3c: Fix crash on module insertion for second time If sdhci-s3c driver is built as module, it gives following error if inserted again after removing. This was happening as pm_runtime_use_autosuspend() is called in sdhci_s3c_probe() function but in sdhci_s3c_remove() its complementary pm_runtime_dont_use_autosuspend() is not called. BUG: spinlock bad magic on CPU#1, insmod/955 lock: 0xee771368, .magic: 00000000, .owner: insmod/955, .owner_cpu: 1 [] (unwind_backtrace+0x0/0xf8) from [] (do_raw_spin_unlock+0xa4/0xe4) [] (do_raw_spin_unlock+0xa4/0xe4) from [] (_raw_spin_unlock_irqrestore+0xc/0x38) [] (_raw_spin_unlock_irqrestore+0xc/0x38) from [] (sdhci_runtime_suspend_host+0x54/0x80) [] (sdhci_runtime_suspend_host+0x54/0x80) from [] (sdhci_s3c_runtime_suspend+0x14/0x38 [sdhci_s3c]) [] (sdhci_s3c_runtime_suspend+0x14/0x38 [sdhci_s3c]) from [] (pm_generic_runtime_suspend+0x2c/0x40) [] (pm_generic_runtime_suspend+0x2c/0x40) from [] (__rpm_callback+0x70/0x98) [] (__rpm_callback+0x70/0x98) from [] (rpm_suspend+0xf0/0x534) [] (rpm_suspend+0xf0/0x534) from [] (__pm_runtime_suspend+0x5c/0x74) [] (__pm_runtime_suspend+0x5c/0x74) from [] (pm_generic_runtime_idle+0x44/0x4c) [] (pm_generic_runtime_idle+0x44/0x4c) from [] (__rpm_callback+0x70/0x98) [] (__rpm_callback+0x70/0x98) from [] (rpm_idle+0xdc/0x18c) [] (rpm_idle+0xdc/0x18c) from [] (pm_runtime_set_autosuspend_delay+0x30/0x3c) [] (pm_runtime_set_autosuspend_delay+0x30/0x3c) from [] (sdhci_s3c_probe+0x35c/0x52c [sdhci_s3c]) [] (sdhci_s3c_probe+0x35c/0x52c [sdhci_s3c]) from [] (platform_drv_probe+0x18/0x1c) Signed-off-by: Chander Kashyap Acked-by: Jaehoon Chung Signed-off-by: Chris Ball --- drivers/mmc/host/sdhci-s3c.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c index 4d9acf833590..f64108f2664a 100644 --- a/drivers/mmc/host/sdhci-s3c.c +++ b/drivers/mmc/host/sdhci-s3c.c @@ -788,6 +788,7 @@ static int __devexit sdhci_s3c_remove(struct platform_device *pdev) sdhci_remove_host(host, 1); + pm_runtime_dont_use_autosuspend(&pdev->dev); pm_runtime_disable(&pdev->dev); clk_disable(sc->clk_bus[sc->cur_clk]); -- 2.39.5