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net: qcom/emac: fix return value check in emac_sgmii_config()

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In case of error, the function ioremap() returns NULL pointer
not ERR_PTR(). The IS_ERR() test in the return value check
should be replaced with NULL test.

Also add check for return value of platform_get_resource().

Fixes: 54e19bc74f33 ("net: qcom/emac: do not use devm on internal
phy pdev")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Timur Tabi <timur@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Wei Yongjun 2016-10-01 09:12:29 +00:00 committed by David S. Miller
parent b6a7920848
commit 0fd7d43fbc
1 changed files with 9 additions and 4 deletions
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13
drivers/net/ethernet/qualcomm/emac/emac-sgmii.c
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@ -740,9 +740,14 @@ int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt)
/* Base address is the first address */
res = platform_get_resource(sgmii_pdev, IORESOURCE_MEM, 0);
if (!res) {
ret = -EINVAL;
goto error_put_device;
}
phy->base = ioremap(res->start, resource_size(res));
if (IS_ERR(phy->base)) {
ret = PTR_ERR(phy->base);
if (!phy->base) {
ret = -ENOMEM;
goto error_put_device;
}
@ -750,8 +755,8 @@ int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt)
res = platform_get_resource(sgmii_pdev, IORESOURCE_MEM, 1);
if (res) {
phy->digital = ioremap(res->start, resource_size(res));
if (IS_ERR(phy->digital)) {
ret = PTR_ERR(phy->digital);
if (!phy->digital) {
ret = -ENOMEM;
goto error_unmap_base;
}
}