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drm/rcar-du: fix return value check in rcar_du_lvdsenc_get_resources()

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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(). Also remove the dev_err call to avoid redundant
error message.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
This commit is contained in:
Wei Yongjun 2013-08-23 10:21:21 +08:00 committed by Laurent Pinchart
parent a3483353ca
commit c8ca9d6aa6
1 changed files with 2 additions and 11 deletions
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13
drivers/gpu/drm/rcar-du/rcar_du_lvdsenc.c
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@ -144,18 +144,9 @@ static int rcar_du_lvdsenc_get_resources(struct rcar_du_lvdsenc *lvds,
sprintf(name, "lvds.%u", lvds->index);
mem = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
if (mem == NULL) {
dev_err(&pdev->dev, "failed to get memory resource for %s\n",
name);
return -EINVAL;
}
lvds->mmio = devm_ioremap_resource(&pdev->dev, mem);
if (lvds->mmio == NULL) {
dev_err(&pdev->dev, "failed to remap memory resource for %s\n",
name);
return -ENOMEM;
}
if (IS_ERR(lvds->mmio))
return PTR_ERR(lvds->mmio);
lvds->clock = devm_clk_get(&pdev->dev, name);
if (IS_ERR(lvds->clock)) {