From 88f4e22cb4894e541cb48e5d762214f1e22a41e9 Mon Sep 17 00:00:00 2001
From: John van der Kamp <sjonny@suffe.me.uk>
Date: Tue, 23 Jun 2020 23:30:54 +0200
Subject: drm/amdgpu/display: Unlock mutex on error
Git-commit: ee434a4f9f5ea15b0f84bddd8c012838cf9472c5
Patch-mainline: v5.8-rc3
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
Make sure we pass through ret label to unlock the mutex.
Signed-off-by: John van der Kamp <sjonny@suffe.me.uk>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
index dcf84a61de37..949d10ef8304 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
@@ -510,8 +510,10 @@ static ssize_t srm_data_read(struct file *filp, struct kobject *kobj, struct bin
srm = psp_get_srm(work->hdcp.config.psp.handle, &srm_version, &srm_size);
- if (!srm)
- return -EINVAL;
+ if (!srm) {
+ ret = -EINVAL;
+ goto ret;
+ }
if (pos >= srm_size)
ret = 0;
--
2.28.0