From: Luke Wang Date: Wed, 15 Jul 2026 07:18:18 +0000 (+0800) Subject: mmc: sdhci-esdhc-imx: fix resume error handling X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e27c946b589c53520409a0956b33d52ef7a0898f;p=thirdparty%2Fkernel%2Flinux.git mmc: sdhci-esdhc-imx: fix resume error handling Check pm_runtime_force_resume() return value in resume. If it fails (clock enable failure), return immediately since accessing hardware registers on an unclocked device would cause a kernel panic. The early return intentionally skips enable_irq() and sdhci_disable_irq_wakeups() because the IRQ handler reads SDHCI_INT_STATUS, which would also fault without clocks. The PM runtime usage counter leak only affects this already-broken device instance and is an acceptable tradeoff to preserve system stability. Remove the return value check for mmc_gpio_set_cd_wake(host->mmc, false) since disable_irq_wake() called internally always returns 0. Also return 0 explicitly on the success path instead of propagating stale return values. Fixes: 676a83855614 ("mmc: host: sdhci-esdhc-imx: refactor the system PM logic") Acked-by: Adrian Hunter Reviewed-by: Frank Li Signed-off-by: Luke Wang Cc: stable@vger.kernel.org Signed-off-by: Ulf Hansson --- diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index 290a3172931b..18f4905c15b9 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -2123,12 +2123,12 @@ static int sdhci_esdhc_resume(struct device *dev) dev_warn(dev, "Failed to restore pinctrl state\n"); } - pm_runtime_force_resume(dev); - - ret = mmc_gpio_set_cd_wake(host->mmc, false); + ret = pm_runtime_force_resume(dev); if (ret) return ret; + mmc_gpio_set_cd_wake(host->mmc, false); + /* re-initialize hw state in case it's lost in low power mode */ sdhci_esdhc_imx_hwinit(host); @@ -2155,7 +2155,7 @@ static int sdhci_esdhc_resume(struct device *dev) pm_runtime_put_autosuspend(dev); - return ret; + return 0; } static int sdhci_esdhc_runtime_suspend(struct device *dev)