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authorFrediano Ziglio <fziglio@redhat.com>2015-06-03 12:09:19 +0100
committerDave Airlie <airlied@redhat.com>2015-06-05 11:00:52 +1000
commitef1316961048988c6d044a298b5842c8288cc35b (patch)
tree59660e9a96005484be131735074182a043581303 /drivers
parent74d9a6335dceb81a55821ac72daaa8f1c1554a83 (diff)
downloadkernel-ef1316961048988c6d044a298b5842c8288cc35b.tar.gz
drm/qxl: Propagate correctly errors from qxlhw_handle_to_bo
This function could return a NULL pointer in case of handle not present and in case of out of memory conditions however caller function always returned EINVAL error hiding a possible ENOMEM. This patch change the function to return the error instead to be able to propagate the error instead of assuming EINVAL. Signed-off-by: Frediano Ziglio <fziglio@redhat.com> Reviewed-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/qxl/qxl_ioctl.c33
1 files changed, 14 insertions, 19 deletions
diff --git a/drivers/gpu/drm/qxl/qxl_ioctl.c b/drivers/gpu/drm/qxl/qxl_ioctl.c
index 00106294f21d..bda5c5f80c24 100644
--- a/drivers/gpu/drm/qxl/qxl_ioctl.c
+++ b/drivers/gpu/drm/qxl/qxl_ioctl.c
@@ -107,9 +107,9 @@ apply_surf_reloc(struct qxl_device *qdev, struct qxl_reloc_info *info)
}
/* return holding the reference to this object */
-static struct qxl_bo *qxlhw_handle_to_bo(struct qxl_device *qdev,
- struct drm_file *file_priv, uint64_t handle,
- struct qxl_release *release)
+static int qxlhw_handle_to_bo(struct qxl_device *qdev,
+ struct drm_file *file_priv, uint64_t handle,
+ struct qxl_release *release, struct qxl_bo **qbo_p)
{
struct drm_gem_object *gobj;
struct qxl_bo *qobj;
@@ -117,16 +117,17 @@ static struct qxl_bo *qxlhw_handle_to_bo(struct qxl_device *qdev,
gobj = drm_gem_object_lookup(qdev->ddev, file_priv, handle);
if (!gobj)
- return NULL;
+ return -EINVAL;
qobj = gem_to_qxl_bo(gobj);
ret = qxl_release_list_add(release, qobj);
drm_gem_object_unreference_unlocked(gobj);
if (ret)
- return NULL;
+ return ret;
- return qobj;
+ *qbo_p = qobj;
+ return 0;
}
/*
@@ -219,13 +220,10 @@ static int qxl_process_single_command(struct qxl_device *qdev,
reloc_info[i].type = reloc.reloc_type;
if (reloc.dst_handle) {
- reloc_info[i].dst_bo = qxlhw_handle_to_bo(qdev, file_priv,
- reloc.dst_handle, release);
- if (!reloc_info[i].dst_bo) {
- ret = -EINVAL;
- reloc_info[i].src_bo = NULL;
+ ret = qxlhw_handle_to_bo(qdev, file_priv, reloc.dst_handle, release,
+ &reloc_info[i].dst_bo);
+ if (ret)
goto out_free_bos;
- }
reloc_info[i].dst_offset = reloc.dst_offset;
} else {
reloc_info[i].dst_bo = cmd_bo;
@@ -234,14 +232,11 @@ static int qxl_process_single_command(struct qxl_device *qdev,
num_relocs++;
/* reserve and validate the reloc dst bo */
- if (reloc.reloc_type == QXL_RELOC_TYPE_BO || reloc.src_handle > 0) {
- reloc_info[i].src_bo =
- qxlhw_handle_to_bo(qdev, file_priv,
- reloc.src_handle, release);
- if (!reloc_info[i].src_bo) {
- ret = -EINVAL;
+ if (reloc.reloc_type == QXL_RELOC_TYPE_BO || reloc.src_handle) {
+ ret = qxlhw_handle_to_bo(qdev, file_priv, reloc.src_handle, release,
+ &reloc_info[i].src_bo);
+ if (ret)
goto out_free_bos;
- }
reloc_info[i].src_offset = reloc.src_offset;
} else {
reloc_info[i].src_bo = NULL;