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msm: fb: Null check mfd data #5

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msm: fb: Null check mfd data #5

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6 changes: 5 additions & 1 deletion drivers/video/msm/msm_fb.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3730,7 +3730,7 @@ static int msmfb_display_commit(struct fb_info *info,
static int msm_fb_ioctl(struct fb_info *info, unsigned int cmd,
unsigned long arg)
{
struct msm_fb_data_type *mfd = (struct msm_fb_data_type *)info->par;
struct msm_fb_data_type *mfd;
void __user *argp = (void __user *)arg;
struct fb_cursor cursor;
struct fb_cmap cmap;
Expand All @@ -3748,6 +3748,10 @@ static int msm_fb_ioctl(struct fb_info *info, unsigned int cmd,
struct mdp_buf_sync buf_sync;
int ret = 0;
msm_fb_pan_idle(mfd);

if (!info || !info->par)
return -EINVAL;
mfd = (struct msm_fb_data_type *)info->par;

switch (cmd) {
#ifdef CONFIG_FB_MSM_OVERLAY
Expand Down