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Subject[PATCH] drm/msm: Move call to PTR_ERR_OR_ZERO after reassignment
Date
Here, a location is reset to NULL before being passed to PTR_ERR.
So, PTR_ERR should be called before its argument is reassigned
to NULL. Further to simplify things use PTR_ERR_OR_ZERO instead
of PTR_ERR and IS_ERR.

Problem found using Coccinelle.

Signed-off-by: Vaishali Thakkar <vaishali.thakkar@oracle.com>
---
drivers/gpu/drm/msm/edp/edp_ctrl.c | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/msm/edp/edp_ctrl.c b/drivers/gpu/drm/msm/edp/edp_ctrl.c
index 81200e9..7816541 100644
--- a/drivers/gpu/drm/msm/edp/edp_ctrl.c
+++ b/drivers/gpu/drm/msm/edp/edp_ctrl.c
@@ -302,21 +302,23 @@ static void edp_clk_disable(struct edp_ctrl *ctrl, u32 clk_mask)
static int edp_regulator_init(struct edp_ctrl *ctrl)
{
struct device *dev = &ctrl->pdev->dev;
+ int ret;

DBG("");
ctrl->vdda_vreg = devm_regulator_get(dev, "vdda");
- if (IS_ERR(ctrl->vdda_vreg)) {
+ ret = PTR_ERR_OR_ZERO(ctrl->vdda_vreg);
+ if (ret) {
pr_err("%s: Could not get vdda reg, ret = %ld\n", __func__,
- PTR_ERR(ctrl->vdda_vreg));
+ ret);
ctrl->vdda_vreg = NULL;
- return PTR_ERR(ctrl->vdda_vreg);
+ return ret;
}
ctrl->lvl_vreg = devm_regulator_get(dev, "lvl-vdd");
- if (IS_ERR(ctrl->lvl_vreg)) {
- pr_err("Could not get lvl-vdd reg, %ld",
- PTR_ERR(ctrl->lvl_vreg));
+ ret = PTR_ERR_OR_ZERO(ctrl->lvl_vreg);
+ if (ret) {
+ pr_err("Could not get lvl-vdd reg, %ld", ret);
ctrl->lvl_vreg = NULL;
- return PTR_ERR(ctrl->lvl_vreg);
+ return ret;
}

return 0;
--
2.1.4
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