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dpaa2-mac: Fix potential null pointer dereference 

There is a null-check for _pcs_, but it is being dereferenced
prior to this null-check. So, if _pcs_ can actually be null,
then there is a potential null pointer dereference that should
be fixed by null-checking _pcs_ before being dereferenced.

Addresses-Coverity-ID: 1497159 ("Dereference before null check")
Fixes: 94ae899b20 ("dpaa2-mac: add PCS support through the Lynx module")
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gustavo A. R. Silva 2020-09-25 12:03:23 -05:00 committed by David S. Miller
parent 9b69e5ebe6
commit b4f434839e
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
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@ -290,9 +290,9 @@ static int dpaa2_pcs_create(struct dpaa2_mac *mac,
static void dpaa2_pcs_destroy(struct dpaa2_mac *mac)
{
struct lynx_pcs *pcs = mac->pcs;
struct device *dev = &pcs->mdio->dev;
if (pcs) {
struct device *dev = &pcs->mdio->dev;
lynx_pcs_destroy(pcs);
put_device(dev);
mac->pcs = NULL;