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authorDmitry Kasatkin <dmitry.kasatkin@nokia.com>2011-06-02 21:10:13 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2011-06-30 07:44:05 +0800
commitcd3f1d545c45489c88fbc71a82559664b8bf0bb2 (patch)
treed8216ea23928ad6ebe626470d38ceb7953c0137d /drivers/crypto
parent0efd4d8a6add75d6008a95fb628d376fb7cfcbe2 (diff)
crypto: omap-sham - do not schedule tasklet if there is no active requests
Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@nokia.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
-rw-r--r--drivers/crypto/omap-sham.c5
1 files changed, 5 insertions, 0 deletions
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);