| Message ID | 1450367223-21068-2-git-send-email-mathieu.poirier@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c index e25492137d8b..93738dfbf631 100644 --- a/drivers/hwtracing/coresight/coresight.c +++ b/drivers/hwtracing/coresight/coresight.c @@ -548,7 +548,7 @@ static int coresight_name_match(struct device *dev, void *data) to_match = data; i_csdev = to_coresight_device(dev); - if (!strcmp(to_match, dev_name(&i_csdev->dev))) + if (to_match && !strcmp(to_match, dev_name(&i_csdev->dev))) return 1; return 0;
Connection child names associated to ports can sometimes be NULL, which is the case when booting a system on QEMU or when the Coresight power domain isn't switched on. This patch is adding a check to make sure a NULL string isn't fed to strcmp(), something that avoid crashing the system. Cc: <stable@vger.kernel.org> # v3.18+ Reported-by: Tyler Baker <tyler.baker@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> --- drivers/hwtracing/coresight/coresight.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)