diff mbox series

[v2,12/41] drm/modes: parse_cmdline: Add support for named modes containing dashes

Message ID 20220728-rpi-analog-tv-properties-v2-12-459522d653a7@cerno.tech (mailing list archive)
State New, archived
Headers show
Series drm: Analog TV Improvements | expand

Commit Message

Maxime Ripard Aug. 29, 2022, 1:11 p.m. UTC 
From: Geert Uytterhoeven <geert@linux-m68k.org>

It is fairly common for named video modes to contain dashes (e.g.
"tt-mid" on Atari, "dblntsc-ff" on Amiga).  Currently such mode names
are not recognized, as the dash is considered to be a separator between
mode name and bpp.

Fix this by skipping any dashes that are not followed immediately by a
digit when looking for the separator.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
diff mbox series

Patch

diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index b4e1ff56b4d8..99a21e5cd00d 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -2263,6 +2263,8 @@  bool drm_mode_parse_command_line_for_connector(const char *mode_option,
 
 	/* Try to locate the bpp and refresh specifiers, if any */
 	bpp_ptr = strnchr(name, options_off, '-');
+	while (bpp_ptr && !isdigit(bpp_ptr[1]))
+		bpp_ptr = strnchr(bpp_ptr + 1, options_off, '-');
 	if (bpp_ptr)
 		bpp_off = bpp_ptr - name;