From: Luke Wang Date: Wed, 15 Jul 2026 07:18:15 +0000 (+0800) Subject: mmc: sdhci-esdhc-imx: disable irq during suspend to fix unhandled interrupt X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9d87eaf985cef9581b6ed99b461b38e8cd666480;p=thirdparty%2Fkernel%2Flinux.git mmc: sdhci-esdhc-imx: disable irq during suspend to fix unhandled interrupt When using WIFI out-of-band wakeup, an "irq xxx: nobody cared" warning occurs. This happens because the usdhc interrupt is not disabled during system suspend when device_may_wakeup() returns false. The sequence of events leading to this issue: 1. System enters suspend without disabling usdhc interrupt (because device_may_wakeup() returns false for usdhc device) 2. WIFI out-of-band wakeup triggers system resume via GPIO interrupt 3. WIFI sends a Card interrupt before usdhc has fully resumed 4. usdhc is still in runtime suspend state and cannot handle the interrupt properly 5. The unhandled interrupt triggers "nobody cared" warning Fix this by unconditionally disabling the usdhc interrupt during suspend and re-enabling it during resume, regardless of the wakeup capability. This ensures no interrupts are processed during the suspend/resume transition. Fixes: 676a83855614 ("mmc: host: sdhci-esdhc-imx: refactor the system PM logic") Acked-by: Adrian Hunter Reviewed-by: Haibo Chen 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 a54da5757acc..d980dea9cad1 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -2077,9 +2077,10 @@ static int sdhci_esdhc_suspend(struct device *dev) if (mmc_card_keep_power(host->mmc) && esdhc_is_usdhc(imx_data)) sdhc_esdhc_tuning_save(host); + /* The irqs of imx are not shared. It is safe to disable */ + disable_irq(host->irq); + if (device_may_wakeup(dev)) { - /* The irqs of imx are not shared. It is safe to disable */ - disable_irq(host->irq); ret = sdhci_enable_irq_wakeups(host); if (!ret) dev_warn(dev, "Failed to enable irq wakeup\n"); @@ -2130,10 +2131,10 @@ static int sdhci_esdhc_resume(struct device *dev) /* re-initialize hw state in case it's lost in low power mode */ sdhci_esdhc_imx_hwinit(host); - if (host->irq_wake_enabled) { + if (host->irq_wake_enabled) sdhci_disable_irq_wakeups(host); - enable_irq(host->irq); - } + + enable_irq(host->irq); /* * restore the saved tuning delay value for the device which keep