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staging: ccree: handle end of sg list gracefully

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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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gilad Ben-Yossef 2018-01-07 12:14:25 +00:00 committed by Greg Kroah-Hartman
parent 2f7caf6b02
commit 6e92010b01
1 changed files with 1 additions and 1 deletions
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drivers/staging/ccree/ssi_buffer_mgr.c
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@ -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 */