bug in AT91 MCI suspend routines
This patch fixes a bug in AT91 mmc host driver, that enables the wakeup
from suspend on card detection pin even if the card detect pin is not
available (==0). If not card detection pin is defined, IRQ0 == FIQ gets
enabled and if some activity is present on that pin, the system gets a
FIQ request, that causes a crash.
Signed-off-by: Anti Sullin <anti.sullin@artecdesign.ee>
Signed-off-by: Nicolas Ferre <nicolas.ferre@rfo.atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c
index bfebd2f..955ea60 100644
--- a/drivers/mmc/host/at91_mci.c
+++ b/drivers/mmc/host/at91_mci.c
@@ -941,7 +941,7 @@
host = mmc_priv(mmc);
- if (host->present != -1) {
+ if (host->board->det_pin) {
device_init_wakeup(&pdev->dev, 0);
free_irq(host->board->det_pin, host);
cancel_delayed_work(&host->mmc->detect);
@@ -972,7 +972,7 @@
struct at91mci_host *host = mmc_priv(mmc);
int ret = 0;
- if (device_may_wakeup(&pdev->dev))
+ if (host->board->det_pin && device_may_wakeup(&pdev->dev))
enable_irq_wake(host->board->det_pin);
if (mmc)
@@ -987,7 +987,7 @@
struct at91mci_host *host = mmc_priv(mmc);
int ret = 0;
- if (device_may_wakeup(&pdev->dev))
+ if (host->board->det_pin && device_may_wakeup(&pdev->dev))
disable_irq_wake(host->board->det_pin);
if (mmc)