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drm/amd/display: Fix possible memleak in dp_trigger_hotplug()

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If parse_write_buffer_into_params() fails, we should free
wr_buf before return.

Fixes: 6f77b2ac62 ("drm/amd/display: Add connector HPD trigger debugfs entry")
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
YueHaibing 2020-09-10 11:26:36 +08:00 committed by Alex Deucher
parent d56b83f7c1
commit d75fa679b0
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
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@ -1093,8 +1093,10 @@ static ssize_t dp_trigger_hotplug(struct file *f, const char __user *buf,
if (parse_write_buffer_into_params(wr_buf, size,
(long *)param, buf,
max_param_num,
&param_nums))
&param_nums)) {
kfree(wr_buf);
return -EINVAL;
}
if (param_nums <= 0) {
DRM_DEBUG_DRIVER("user data not be read\n");