ata: fix return value check in ahci_seattle_get_port_info()

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

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/drivers/ata/ahci_seattle.c b/drivers/ata/ahci_seattle.c
index 6e702ab572204deb87d96c0bd399b42d42f2a1f0..1d31c0c0fc20b48c287d2df293776cf9c1e52329 100644 (file)
--- a/drivers/ata/ahci_seattle.c
+++ b/drivers/ata/ahci_seattle.c
@@ -137,7 +137,7 @@ static const struct ata_port_info *ahci_seattle_get_port_info(
        u32 val;
 
        plat_data = devm_kzalloc(dev, sizeof(*plat_data), GFP_KERNEL);
-       if (IS_ERR(plat_data))
+       if (!plat_data)
                return &ahci_port_info;
 
        plat_data->sgpio_ctrl = devm_ioremap_resource(dev,