[PATCH] drm/format_helper: fix a kernel-doc typo

[Randy Dunlap]

It looks like the incorrect name of a function parameter was used
in the kernel-doc notation, so just change it to the function's
parameter name to quell the kernel-doc warning.

drivers/gpu/drm/drm_format_helper.c:640: warning: Function parameter or member 'vaddr' not described in 'drm_fb_xrgb8888_to_mono_reversed'
drivers/gpu/drm/drm_format_helper.c:640: warning: Excess function parameter 'src' description in 'drm_fb_xrgb8888_to_mono_reversed'

Fixes: bcf8b616deb8 ("drm/format-helper: Add drm_fb_xrgb8888_to_mono_reversed()")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: David Airlie <airlied@xxxxxxxx>
Cc: Daniel Vetter <daniel@xxxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: Javier Martinez Canillas <javierm@xxxxxxxxxx>
Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
CC: Maxime Ripard <mripard@xxxxxxxxxx>
CC: Thomas Zimmermann <tzimmermann@xxxxxxx>
---
 drivers/gpu/drm/drm_format_helper.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-next-20220401.orig/drivers/gpu/drm/drm_format_helper.c
+++ linux-next-20220401/drivers/gpu/drm/drm_format_helper.c
@@ -624,7 +624,7 @@ static void drm_fb_gray8_to_mono_reverse
  * drm_fb_xrgb8888_to_mono_reversed - Convert XRGB8888 to reversed monochrome
  * @dst: reversed monochrome destination buffer
  * @dst_pitch: Number of bytes between two consecutive scanlines within dst
- * @src: XRGB8888 source buffer
+ * @vaddr: XRGB8888 source buffer
  * @fb: DRM framebuffer
  * @clip: Clip rectangle area to copy
  *