Check whether host->sdio_irq_thread is NULL before wake_up_process() is
called about host->sdio_irq_thread.
Signed-off-by: Joonyoung Shim <jy0922.shim@xxxxxxxxxxx>
---
Currently the kernel panic to refer NULL pointer about
host->sdio_irq_thread are occuring at the trats board using Samsung
SDHCI driver.
include/linux/mmc/host.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 61a10c1..2950fea 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -372,7 +372,8 @@ static inline void mmc_signal_sdio_irq(struct mmc_host *host)
{
host->ops->enable_sdio_irq(host, 0);
host->sdio_irq_pending = true;
- wake_up_process(host->sdio_irq_thread);
+ if (host->sdio_irq_thread)
+ wake_up_process(host->sdio_irq_thread);
}
#ifdef CONFIG_REGULATOR
--
1.7.9.5
--
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