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net: eth-uclass: add return value check

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Add return value check

Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Peng Fan 2020-05-03 22:41:13 +08:00 committed by Stefano Babic
parent a6979f78bc
commit d2b70205dd
1 changed files with 10 additions and 2 deletions
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12
net/eth-uclass.c
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@ -40,8 +40,12 @@ static int eth_errno;
static struct eth_uclass_priv *eth_get_uclass_priv(void) static struct eth_uclass_priv *eth_get_uclass_priv(void)
{ {
struct uclass *uc; struct uclass *uc;
int ret;
ret = uclass_get(UCLASS_ETH, &uc);
if (ret)
return NULL;
uclass_get(UCLASS_ETH, &uc);
assert(uc); assert(uc);
return uc->priv; return uc->priv;
} }
@ -102,6 +106,7 @@ struct udevice *eth_get_dev_by_name(const char *devname)
struct udevice *it; struct udevice *it;
struct uclass *uc; struct uclass *uc;
int len = strlen("eth"); int len = strlen("eth");
int ret;
/* Must be longer than 3 to be an alias */ /* Must be longer than 3 to be an alias */
if (!strncmp(devname, "eth", len) && strlen(devname) > len) { if (!strncmp(devname, "eth", len) && strlen(devname) > len) {
@ -109,7 +114,10 @@ struct udevice *eth_get_dev_by_name(const char *devname)
seq = simple_strtoul(startp, &endp, 10); seq = simple_strtoul(startp, &endp, 10);
} }
uclass_get(UCLASS_ETH, &uc); ret = uclass_get(UCLASS_ETH, &uc);
if (ret)
return NULL;
uclass_foreach_dev(it, uc) { uclass_foreach_dev(it, uc) {
/* /*
* We need the seq to be valid, so try to probe it. * We need the seq to be valid, so try to probe it.