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drm/nouveau: use kmemdup for edid allocation/copying

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Avoids potential null pointer dereference.

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Marcin Slusarz 2013-01-27 17:04:48 +01:00 committed by Ben Skeggs
parent 03e9a04050
commit a441dbb1d6
1 changed files with 4 additions and 3 deletions
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7
drivers/gpu/drm/nouveau/nouveau_connector.c
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@ -399,9 +399,10 @@ nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
struct edid *edid =
(struct edid *)nouveau_bios_embedded_edid(dev);
if (edid) {
nv_connector->edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
*(nv_connector->edid) = *edid;
status = connector_status_connected;
nv_connector->edid =
kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
if (nv_connector->edid)
status = connector_status_connected;
}
}