From cd3f1d545c45489c88fbc71a82559664b8bf0bb2 Mon Sep 17 00:00:00 2001 From: Dmitry Kasatkin Date: Thu, 2 Jun 2011 21:10:13 +0300 Subject: crypto: omap-sham - do not schedule tasklet if there is no active requests Signed-off-by: Dmitry Kasatkin Signed-off-by: Herbert Xu --- drivers/crypto/omap-sham.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/crypto') diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c index 804c16bc2d61..6399a8f1938a 100644 --- a/drivers/crypto/omap-sham.c +++ b/drivers/crypto/omap-sham.c @@ -1085,6 +1085,11 @@ static irqreturn_t omap_sham_irq(int irq, void *dev_id) SHA_REG_CTRL_OUTPUT_READY); omap_sham_read(dd, SHA_REG_CTRL); + if (!test_bit(FLAGS_BUSY, &dd->flags)) { + dev_warn(dd->dev, "Interrupt when no active requests.\n"); + return IRQ_HANDLED; + } + set_bit(FLAGS_OUTPUT_READY, &dd->flags); tasklet_schedule(&dd->done_task); -- cgit v1.2.3-59-g8ed1b