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git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
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Luke Wang
e27c946b58
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: 676a838556 ("mmc: host: sdhci-esdhc-imx: refactor the system PM logic")
Acked-by: Adrian Hunter <[email protected]>
Reviewed-by: Frank Li <[email protected]>
Signed-off-by: Luke Wang <[email protected]>
Cc: [email protected]
Signed-off-by: Ulf Hansson <[email protected]>