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-rw-r--r--drivers/gpu/drm/drm_debugfs_crc.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/drm_debugfs_crc.c b/drivers/gpu/drm/drm_debugfs_crc.c
index ca3c55c6b815..2ece2957da1a 100644
--- a/drivers/gpu/drm/drm_debugfs_crc.c
+++ b/drivers/gpu/drm/drm_debugfs_crc.c
@@ -140,8 +140,8 @@ static ssize_t crc_control_write(struct file *file, const char __user *ubuf,
if (IS_ERR(source))
return PTR_ERR(source);
- if (source[len] == '\n')
- source[len] = '\0';
+ if (source[len - 1] == '\n')
+ source[len - 1] = '\0';
ret = crtc->funcs->verify_crc_source(crtc, source, &values_cnt);
if (ret)