For Freescale QorIQ LS1021AQDS board, there is a SDIO interrupt
in the process of resume without inserting SD adapter because of
some unknown issue. But the driver doesn't assign sdio_irq_thread
pointer. This will block the resume of kernel. This patch is used
to avoid using NULL sdio_irq_thread pointer.
Signed-off-by: Yangbo Lu <yangbo.lu@xxxxxxxxxxxxx>
---
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 1369e54..83b81fd 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -412,7 +412,8 @@ 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);
}
void sdio_run_irqs(struct mmc_host *host);
--
2.1.0.27.g96db324
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