| Message ID | 20181217091830.32624-1-yuehaibing@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [-next] drm/shmob: Fix return value check in shmob_drm_probe | expand |
On Mon, Dec 17, 2018 at 05:18:30PM +0800, YueHaibing wrote: > In case of error, the function devm_ioremap_resource() returns ERR_PTR() > and never returns NULL. The NULL test in the return value check should > be replaced with IS_ERR(). > > Fixes: 8f1597c8f1a5 ("drm: shmobile: Perform initialization/cleanup at probe/remove time") > Signed-off-by: YueHaibing <yuehaibing@huawei.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_drv.c b/drivers/gpu/drm/shmobile/shmob_drm_drv.c index 8554102..f2cfd16 100644 --- a/drivers/gpu/drm/shmobile/shmob_drm_drv.c +++ b/drivers/gpu/drm/shmobile/shmob_drm_drv.c @@ -229,8 +229,8 @@ static int shmob_drm_probe(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_MEM, 0); sdev->mmio = devm_ioremap_resource(&pdev->dev, res); - if (sdev->mmio == NULL) - return -ENOMEM; + if (IS_ERR(sdev->mmio)) + return PTR_ERR(sdev->mmio); ret = shmob_drm_setup_clocks(sdev, pdata->clk_source); if (ret < 0)
In case of error, the function devm_ioremap_resource() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Fixes: 8f1597c8f1a5 ("drm: shmobile: Perform initialization/cleanup at probe/remove time") Signed-off-by: YueHaibing <yuehaibing@huawei.com> --- drivers/gpu/drm/shmobile/shmob_drm_drv.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)