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authorOleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>2020-08-13 09:21:10 +0300
committerJuergen Gross <jgross@suse.com>2020-08-13 13:50:25 +0300
commit14dee058610446aa464254fc5c8e88c7535195e0 (patch)
tree1db9b994005e8591608674db771d5c34ffb8a0d0 /drivers
parent5fa4e6f1c2d8c9a4e47e1931b42893172d388f2b (diff)
downloadlinux-14dee058610446aa464254fc5c8e88c7535195e0.tar.xz
drm/xen-front: Fix misused IS_ERR_OR_NULL checks
The patch c575b7eeb89f: "drm/xen-front: Add support for Xen PV display frontend" from Apr 3, 2018, leads to the following static checker warning: drivers/gpu/drm/xen/xen_drm_front_gem.c:140 xen_drm_front_gem_create() warn: passing zero to 'ERR_CAST' drivers/gpu/drm/xen/xen_drm_front_gem.c 133 struct drm_gem_object *xen_drm_front_gem_create(struct drm_device *dev, 134 size_t size) 135 { 136 struct xen_gem_object *xen_obj; 137 138 xen_obj = gem_create(dev, size); 139 if (IS_ERR_OR_NULL(xen_obj)) 140 return ERR_CAST(xen_obj); Fix this and the rest of misused places with IS_ERR_OR_NULL in the driver. Fixes: c575b7eeb89f: "drm/xen-front: Add support for Xen PV display frontend" Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20200813062113.11030-3-andr2000@gmail.com Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/xen/xen_drm_front.c4
-rw-r--r--drivers/gpu/drm/xen/xen_drm_front_gem.c8
-rw-r--r--drivers/gpu/drm/xen/xen_drm_front_kms.c2
3 files changed, 7 insertions, 7 deletions
diff --git a/drivers/gpu/drm/xen/xen_drm_front.c b/drivers/gpu/drm/xen/xen_drm_front.c
index 1fd458e877ca..51818e76facd 100644
--- a/drivers/gpu/drm/xen/xen_drm_front.c
+++ b/drivers/gpu/drm/xen/xen_drm_front.c
@@ -400,8 +400,8 @@ static int xen_drm_drv_dumb_create(struct drm_file *filp,
args->size = args->pitch * args->height;
obj = xen_drm_front_gem_create(dev, args->size);
- if (IS_ERR_OR_NULL(obj)) {
- ret = PTR_ERR_OR_ZERO(obj);
+ if (IS_ERR(obj)) {
+ ret = PTR_ERR(obj);
goto fail;
}
diff --git a/drivers/gpu/drm/xen/xen_drm_front_gem.c b/drivers/gpu/drm/xen/xen_drm_front_gem.c
index f0b85e094111..4ec8a49241e1 100644
--- a/drivers/gpu/drm/xen/xen_drm_front_gem.c
+++ b/drivers/gpu/drm/xen/xen_drm_front_gem.c
@@ -83,7 +83,7 @@ static struct xen_gem_object *gem_create(struct drm_device *dev, size_t size)
size = round_up(size, PAGE_SIZE);
xen_obj = gem_create_obj(dev, size);
- if (IS_ERR_OR_NULL(xen_obj))
+ if (IS_ERR(xen_obj))
return xen_obj;
if (drm_info->front_info->cfg.be_alloc) {
@@ -117,7 +117,7 @@ static struct xen_gem_object *gem_create(struct drm_device *dev, size_t size)
*/
xen_obj->num_pages = DIV_ROUND_UP(size, PAGE_SIZE);
xen_obj->pages = drm_gem_get_pages(&xen_obj->base);
- if (IS_ERR_OR_NULL(xen_obj->pages)) {
+ if (IS_ERR(xen_obj->pages)) {
ret = PTR_ERR(xen_obj->pages);
xen_obj->pages = NULL;
goto fail;
@@ -136,7 +136,7 @@ struct drm_gem_object *xen_drm_front_gem_create(struct drm_device *dev,
struct xen_gem_object *xen_obj;
xen_obj = gem_create(dev, size);
- if (IS_ERR_OR_NULL(xen_obj))
+ if (IS_ERR(xen_obj))
return ERR_CAST(xen_obj);
return &xen_obj->base;
@@ -194,7 +194,7 @@ xen_drm_front_gem_import_sg_table(struct drm_device *dev,
size = attach->dmabuf->size;
xen_obj = gem_create_obj(dev, size);
- if (IS_ERR_OR_NULL(xen_obj))
+ if (IS_ERR(xen_obj))
return ERR_CAST(xen_obj);
ret = gem_alloc_pages_array(xen_obj, size);
diff --git a/drivers/gpu/drm/xen/xen_drm_front_kms.c b/drivers/gpu/drm/xen/xen_drm_front_kms.c
index 78096bbcd226..ef11b1e4de39 100644
--- a/drivers/gpu/drm/xen/xen_drm_front_kms.c
+++ b/drivers/gpu/drm/xen/xen_drm_front_kms.c
@@ -60,7 +60,7 @@ fb_create(struct drm_device *dev, struct drm_file *filp,
int ret;
fb = drm_gem_fb_create_with_funcs(dev, filp, mode_cmd, &fb_funcs);
- if (IS_ERR_OR_NULL(fb))
+ if (IS_ERR(fb))
return fb;
gem_obj = fb->obj[0];