From: Haibo Chen <haibo.chen@xxxxxxx>
Change to use system_freezable_wq because it can make sure the queue
becomes frozen when userspace becomes frozen during system PM.
Find this issue on i.MX7D-sdb board with broadcom sdio wifi.
When system resume, sometimes this wifi meet the tuning fail issue.
All tuning command get command timeout error. This is because
sdio_irq_work on system_wq was executed before the broadcom
wifi driver resume. Due to broadcom wifi driver set the wifi in
Sleep sate in system suspend, need to set the wifi to Wake state
first. So need to make sure wifi driver resume first, then do the
sdio_irq_work.
Signed-off-by: Haibo Chen <haibo.chen@xxxxxxx>
---
drivers/mmc/core/sdio.c | 2 +-
drivers/mmc/core/sdio_irq.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index 26cabd53ddc5..269ae63d09eb 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -1015,7 +1015,7 @@ static int mmc_sdio_resume(struct mmc_host *host)
if (!(host->caps2 & MMC_CAP2_SDIO_IRQ_NOTHREAD))
wake_up_process(host->sdio_irq_thread);
else if (host->caps & MMC_CAP_SDIO_IRQ)
- queue_delayed_work(system_wq, &host->sdio_irq_work, 0);
+ queue_delayed_work(system_freezable_wq, &host->sdio_irq_work, 0);
}
out:
diff --git a/drivers/mmc/core/sdio_irq.c b/drivers/mmc/core/sdio_irq.c
index 900871073bd7..9d7ec48bd963 100644
--- a/drivers/mmc/core/sdio_irq.c
+++ b/drivers/mmc/core/sdio_irq.c
@@ -132,7 +132,7 @@ void sdio_irq_work(struct work_struct *work)
void sdio_signal_irq(struct mmc_host *host)
{
host->sdio_irq_pending = true;
- queue_delayed_work(system_wq, &host->sdio_irq_work, 0);
+ queue_delayed_work(system_freezable_wq, &host->sdio_irq_work, 0);
}
EXPORT_SYMBOL_GPL(sdio_signal_irq);
--
2.17.1
