Commit 53cc688d authored by Mathieu Poirier's avatar Mathieu Poirier Committed by Greg Kroah-Hartman

coresight: checking for NULL string in coresight_name_match()

commit fadf3a44 upstream.

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.
Reported-by: default avatarTyler Baker <tyler.baker@linaro.org>
Signed-off-by: default avatarMathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 5c6f6667
......@@ -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;
......
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