[PATCH 2/2] sdio: report error if pending IRQ but none function bits

Return error in case of pending IRQ but none functions bits in CCCR_INTx is set.

Signed-off-by: Per Forlin per.forlin@linaro.org --- drivers/mmc/core/sdio_irq.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/drivers/mmc/core/sdio_irq.c b/drivers/mmc/core/sdio_irq.c index 2f81ddc..8184b6e 100644 --- a/drivers/mmc/core/sdio_irq.c +++ b/drivers/mmc/core/sdio_irq.c @@ -50,6 +50,11 @@ static int process_sdio_pending_irqs(struct mmc_card *card) return ret; }

+ if (!pending) { + printk(KERN_WARNING "%s: pending IRQ but none function bits\n", + mmc_card_id(card)); + ret = -EINVAL; + } count = 0; for (i = 1; i <= 7; i++) { if (pending & (1 << i)) {