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3bb10f6093
This patch is to fix a race condition that may cause an unhandled irq, which results in big sdhci interrupt numbers and endless "mmc1: got irq while runtime suspended" msgs before v3.15. Consider following scenario: CPU0 CPU1 sdhci_pxav3_runtime_suspend() spin_lock_irqsave(&host->lock, flags); sdhci_irq() spining on the &host->lock host->runtime_suspended = true; spin_unlock_irqrestore(&host->lock, flags); get the &host->lock runtime_suspended is true now return IRQ_NONE; Fix this race by using the core sdhci.c supplied sdhci_runtime_suspend_host() in runtime suspend hook which will disable card interrupts. We also use the sdhci_runtime_resume_host() in the runtime resume hook accordingly. Signed-off-by: Jisheng Zhang <jszhang@marvell.com> Cc: <stable@vger.kernel.org> # v3.9+ Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> |
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