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staging: nvec: potential NULL dereference on error path

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We assume nvec->rx can be NULL earlier so I have added a check here as
well.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dan Carpenter
2013-11-07 14:25:32 +03:00
committed by Greg Kroah-Hartman
parent cb4855b49d
commit 6330f9cf34
1 changed files with 2 additions and 1 deletions
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drivers/staging/nvec/nvec.c
+2 -1
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@@ -681,7 +681,8 @@ static irqreturn_t nvec_interrupt(int irq, void *dev)
dev_err(nvec->dev,
"RX buffer overflow on %p: "
"Trying to write byte %u of %u\n",
nvec->rx, nvec->rx->pos, NVEC_MSG_SIZE);
nvec->rx, nvec->rx ? nvec->rx->pos : 0,
NVEC_MSG_SIZE);
break;
default:
nvec->state = 0;