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Commit 63769636 authored by Shashank Babu Chinta Venkata's avatar Shashank Babu Chinta Venkata Committed by Gerrit - the friendly Code Review server
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drm/msm/dsi-staging: add null check for user length 



Add null check to user length while doing read from check esd
trigger debugfs node.

Change-Id: I075776431f8b50ed0cc3b4bc7652123ea2e2d1d3
Signed-off-by: default avatarShashank Babu Chinta Venkata <sbchin@codeaurora.org>
parent 84797bfc

drivers/gpu/drm/msm/dsi-staging/dsi_display.c

+3 −0
Original line number Diff line number Diff line
@@ -1166,6 +1166,9 @@ static ssize_t debugfs_esd_trigger_check(struct file *file, 
	if (user_len > sizeof(u32))

		return -EINVAL;



	if (!user_len || !user_buf)

		return -EINVAL;



	buf = kzalloc(user_len, GFP_KERNEL);

	if (!buf)

		return -ENOMEM;