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fix: uninitialized pointer read

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Signed-off-by: jianglianfang <jianglianfang@xiaomi.com>
This commit is contained in:
jianglianfang 2024-03-26 10:15:03 +08:00 committed by Xiang Xiao
parent 72e186f64a
commit 009fc1a28a
1 changed files with 10 additions and 10 deletions
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20
examples/fb/fb_main.c
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@ -155,16 +155,17 @@ static void pan_display(FAR struct fb_state_s *state)
* fb_init_mem2
****************************************************************************/
static int fb_init_mem2(FAR struct fb_state_s *state,
FAR struct fb_planeinfo_s *pinfo)
static int fb_init_mem2(FAR struct fb_state_s *state)
{
int ret;
uintptr_t buf_offset;
struct fb_planeinfo_s pinfo;
pinfo->display = state->pinfo.display + 1;
memset(&pinfo, 0, sizeof(pinfo));
pinfo.display = state->pinfo.display + 1;
ret = ioctl(state->fd, FBIOGET_PLANEINFO,
(unsigned long)(uintptr_t)pinfo);
&pinfo);
if (ret < 0)
{
int errcode = errno;
@ -175,7 +176,7 @@ static int fb_init_mem2(FAR struct fb_state_s *state,
/* Check bpp */
if (pinfo->bpp != state->pinfo.bpp)
if (pinfo.bpp != state->pinfo.bpp)
{
fprintf(stderr, "ERROR: fbmem2 is incorrect");
return -EINVAL;
@ -185,7 +186,7 @@ static int fb_init_mem2(FAR struct fb_state_s *state,
* It needs to be divisible by pinfo.stride
*/
buf_offset = pinfo->fbmem - state->fbmem;
buf_offset = pinfo.fbmem - state->fbmem;
if ((buf_offset % state->pinfo.stride) != 0)
{
@ -202,14 +203,14 @@ static int fb_init_mem2(FAR struct fb_state_s *state,
/* Use consecutive fbmem2. */
state->mem2_yoffset = state->vinfo.yres;
state->fbmem2 = pinfo->fbmem + state->mem2_yoffset * pinfo->stride;
state->fbmem2 = pinfo.fbmem + state->mem2_yoffset * pinfo.stride;
}
else
{
/* Use non-consecutive fbmem2. */
state->mem2_yoffset = buf_offset / state->pinfo.stride;
state->fbmem2 = pinfo->fbmem;
state->fbmem2 = pinfo.fbmem;
}
return 0;
@ -422,7 +423,6 @@ static void draw_rect(FAR struct fb_state_s *state,
int main(int argc, FAR char *argv[])
{
FAR const char *fbdev = g_default_fbdev;
struct fb_planeinfo_s pinfo;
struct fb_state_s state;
struct fb_area_s area;
int nsteps;
@ -582,7 +582,7 @@ int main(int argc, FAR char *argv[])
if (state.pinfo.yres_virtual == (state.vinfo.yres * 2))
{
if ((ret = fb_init_mem2(&state, &pinfo)) < 0)
if ((ret = fb_init_mem2(&state)) < 0)
{
goto out;
}