sdio: kick the interrupt thread upon a resume

Some SDIO cards may suspend while keeping function interrupts active especially in the powered suspend case. Upon resume we need to kick the SDIO interrupt thread to check for pending interrupts and to restart card IRQ detection at the host controller level. Signed-off-by: Nicolas Pitre <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
mgowda · Mar 6, 2010 · 4021684 · 4021684
1 parent 3bca4cf
commit 4021684
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
@@ -441,6 +441,8 @@ static int mmc_sdio_resume(struct mmc_host *host)
 	mmc_claim_host(host);
 	err = mmc_sdio_init_card(host, host->ocr, host->card,
 				 (host->pm_flags & MMC_PM_KEEP_POWER));
+	if (!err && host->sdio_irqs)
+		mmc_signal_sdio_irq(host);
 	mmc_release_host(host);
 
 	/*