[PATCH 07/11] drm: fix error return code
From: Julia Lawall
Date: Sat Aug 22 2015 - 20:23:28 EST
Return a negative error code on failure.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
identifier ret; expression e1,e2;
@@
(
if (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@xxxxxxx>
---
drivers/gpu/drm/gma500/psb_drv.c | 8 ++++++--
drivers/gpu/drm/omapdrm/omap_dmm_tiler.c | 1 +
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/gma500/psb_drv.c b/drivers/gpu/drm/gma500/psb_drv.c
index 92e7e57..4eff0d6 100644
--- a/drivers/gpu/drm/gma500/psb_drv.c
+++ b/drivers/gpu/drm/gma500/psb_drv.c
@@ -326,12 +326,16 @@ static int psb_driver_load(struct drm_device *dev, unsigned long flags)
goto out_err;
dev_priv->mmu = psb_mmu_driver_init(dev, 1, 0, 0);
- if (!dev_priv->mmu)
+ if (!dev_priv->mmu) {
+ ret = -ENOMEM;
goto out_err;
+ }
dev_priv->pf_pd = psb_mmu_alloc_pd(dev_priv->mmu, 1, 0);
- if (!dev_priv->pf_pd)
+ if (!dev_priv->pf_pd) {
+ ret = -ENOMEM;
goto out_err;
+ }
ret = psb_do_init(dev);
if (ret)
diff --git a/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c b/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c
index 7841970..58a00b5 100644
--- a/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c
+++ b/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c
@@ -703,6 +703,7 @@ static int omap_dmm_probe(struct platform_device *dev)
&omap_dmm->refill_pa, GFP_KERNEL);
if (!omap_dmm->refill_va) {
dev_err(&dev->dev, "could not allocate refill memory\n");
+ ret = -ENOMEM;
goto fail;
}
--
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