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drm: Use u64_to_user_ptr() helper for blob ioctls

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Remove the ugly sparse casts by using the helper u64_to_user_ptr()
instead.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161127170910.29106-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2016-11-27 17:09:08 +00:00 committed by Daniel Vetter
parent 8b2fb7b651
commit 75df62478c
1 changed files with 6 additions and 6 deletions
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12
drivers/gpu/drm/drm_property.c
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@ -729,7 +729,6 @@ int drm_mode_getblob_ioctl(struct drm_device *dev,
struct drm_mode_get_blob *out_resp = data;
struct drm_property_blob *blob;
int ret = 0;
void __user *blob_ptr;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
return -EINVAL;
@ -739,8 +738,9 @@ int drm_mode_getblob_ioctl(struct drm_device *dev,
return -ENOENT;
if (out_resp->length == blob->length) {
blob_ptr = (void __user *)(unsigned long)out_resp->data;
if (copy_to_user(blob_ptr, blob->data, blob->length)) {
if (copy_to_user(u64_to_user_ptr(out_resp->data),
blob->data,
blob->length)) {
ret = -EFAULT;
goto unref;
}
@ -757,7 +757,6 @@ int drm_mode_createblob_ioctl(struct drm_device *dev,
{
struct drm_mode_create_blob *out_resp = data;
struct drm_property_blob *blob;
void __user *blob_ptr;
int ret = 0;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
@ -767,8 +766,9 @@ int drm_mode_createblob_ioctl(struct drm_device *dev,
if (IS_ERR(blob))
return PTR_ERR(blob);
blob_ptr = (void __user *)(unsigned long)out_resp->data;
if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
if (copy_from_user(blob->data,
u64_to_user_ptr(out_resp->data),
out_resp->length)) {
ret = -EFAULT;
goto out_blob;
}