@@ -351,15 +351,6 @@ allocate_mipi_frames(struct ia_css_pipe *pipe,
ia_css_debug_dtrace(IA_CSS_DEBUG_TRACE_PRIVATE,
"allocate_mipi_frames(%p) enter:\n", pipe);
- assert(pipe);
- assert(pipe->stream);
- if ((!pipe) || (!pipe->stream)) {
- ia_css_debug_dtrace(IA_CSS_DEBUG_TRACE_PRIVATE,
- "allocate_mipi_frames(%p) exit: pipe or stream is null.\n",
- pipe);
- return -EINVAL;
- }
-
if (IS_ISP2401 && pipe->stream->config.online) {
ia_css_debug_dtrace(IA_CSS_DEBUG_TRACE_PRIVATE,
"allocate_mipi_frames(%p) exit: no buffers needed for 2401 pipe mode.\n",
@@ -557,13 +548,6 @@ send_mipi_frames(struct ia_css_pipe *pipe)
IA_CSS_ENTER_PRIVATE("pipe=%p", pipe);
- assert(pipe);
- assert(pipe->stream);
- if (!pipe || !pipe->stream) {
- IA_CSS_ERROR("pipe or stream is null");
- return -EINVAL;
- }
-
/* multi stream video needs mipi buffers */
/* nothing to be done in other cases. */
if (pipe->stream->config.mode != IA_CSS_INPUT_MODE_BUFFERED_SENSOR) {
@@ -202,9 +202,6 @@ generate_dvs_6axis_table_from_config(struct ia_css_dvs_6axis_config
void
free_dvs_6axis_table(struct ia_css_dvs_6axis_config **dvs_6axis_config)
{
- assert(dvs_6axis_config);
- assert(*dvs_6axis_config);
-
if ((dvs_6axis_config) && (*dvs_6axis_config)) {
IA_CSS_ENTER_PRIVATE("dvs_6axis_config %p", (*dvs_6axis_config));
if ((*dvs_6axis_config)->xcoords_y) {
@@ -1215,10 +1215,6 @@ sh_css_sp_init_pipeline(struct ia_css_pipeline *me,
unsigned int thread_id;
u8 if_config_index, tmp_if_config_index;
- assert(me);
-
- assert(me->stages);
-
first_binary = me->stages->binary;
if (input_mode == IA_CSS_INPUT_MODE_SENSOR ||
The atomisp code base has a custom assert() macro, a couple of functions use this in a construction like the following: assert(pipe); assert(pipe->stream); if ((!pipe) || (!pipe->stream)) { ia_css_debug_dtrace(IA_CSS_DEBUG_TRACE_PRIVATE, "allocate_mipi_frames(%p) exit: ...\n", pipe); return -EINVAL; } The second assert is seen by smatch as dereferencing "pipe" in the above example (and dereferencing "dvs_6axis_config" / "me" in the 2 other cases). Following by the dereferenced variable being checked (a second time) in the following if () statement. This triggers the following smatch warnings: drivers/staging/media/atomisp/pci/sh_css_mipi.c:356 allocate_mipi_frames() warn: variable dereferenced before check 'pipe' (see line 355) drivers/staging/media/atomisp/pci/sh_css_mipi.c:562 send_mipi_frames() warn: variable dereferenced before check 'pipe' (see line 561) drivers/staging/media/atomisp/pci/sh_css_param_dvs.c:208 free_dvs_6axis_table() warn: variable dereferenced before check 'dvs_6axis_config' (see line 206) drivers/staging/media/atomisp/pci/sh_css_sp.c:1255 sh_css_sp_init_pipeline() warn: variable dereferenced before check 'me->stages' (see line 1224) The custom assert() macro actually expands to a BUG() call and BUG() calls should not be used in the kernel. Remove the assert() calls to fix the smatch warnings and in case of [allocate|send]_mipi_frames() also remove the if () return -EINVAL block since these functions are never called with a NULL pipe. Reported-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Hans de Goede <hdegoede@redhat.com> --- Note: 1. No Closes: tag since Hans Verkuil reported this in an offlist email. 2. All the other assert() calls really should also be removed. I've put this on my todo list. --- drivers/staging/media/atomisp/pci/sh_css_mipi.c | 16 ---------------- .../staging/media/atomisp/pci/sh_css_param_dvs.c | 3 --- drivers/staging/media/atomisp/pci/sh_css_sp.c | 4 ---- 3 files changed, 23 deletions(-)