[Linux-stable-mirror] [PATCH v3 14/27] staging: ccree: handle end of sg list gracefully

If we are asked for number of entries of an offset bigger than the sg list we should not crash.

Cc: stable@vger.kernel.org Signed-off-by: Gilad Ben-Yossef gilad@benyossef.com --- drivers/staging/ccree/ssi_buffer_mgr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/ccree/ssi_buffer_mgr.c b/drivers/staging/ccree/ssi_buffer_mgr.c index 78288ed..0f71264 100644 --- a/drivers/staging/ccree/ssi_buffer_mgr.c +++ b/drivers/staging/ccree/ssi_buffer_mgr.c @@ -94,7 +94,7 @@ static unsigned int cc_get_sgl_nents(struct device *dev, { unsigned int nents = 0;

- while (nbytes) { + while (nbytes && sg_list) { if (sg_list->length) { nents++; /* get the number of bytes in the last entry */