diff options
| author | Yangbo Lu <yangbo.lu@freescale.com> | 2015-07-10 11:36:45 +0800 |
|---|---|---|
| committer | Nitin Garg <nitin.garg@nxp.com> | 2016-01-14 10:59:31 -0600 |
| commit | 61b5a1cec2491ec75d8245b7e8f09bd3299052f7 (patch) | |
| tree | 9d5e25375162ae2a7f2f5dc0d90bb6a6aa5f11a4 /include/linux | |
| parent | 0ca37b142532539890946adbf0b3975ab5c598cc (diff) | |
mmc: sdio: avoid using NULL sdio_irq_thread pointer
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@freescale.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
(cherry picked from commit 9b902cdec6d1248881ffb1a1b8ea69aa2c90d7cc)
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mmc/host.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 1369e54faeb7..83b81fd865f3 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); |