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From:   Maxime Ripard <maxime@cerno.tech>
To:     Maxime Ripard <mripard@kernel.org>,
        Ben Skeggs <bskeggs@redhat.com>,
        David Airlie <airlied@linux.ie>, Chen-Yu Tsai <wens@csie.org>,
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        Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
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Cc:     Maxime Ripard <maxime@cerno.tech>,
        Hans de Goede <hdegoede@redhat.com>,
        linux-arm-kernel@lists.infradead.org,
        Phil Elwell <phil@raspberrypi.com>,
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        Dave Stevenson <dave.stevenson@raspberrypi.com>,
        dri-devel@lists.freedesktop.org, Dom Cobley <dom@raspberrypi.com>,
        linux-kernel@vger.kernel.org, nouveau@lists.freedesktop.org,
        linux-sunxi@lists.linux.dev,
        Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>,
        Geert Uytterhoeven <geert@linux-m68k.org>
Subject: [PATCH v2 12/41] drm/modes: parse_cmdline: Add support for named modes containing dashes
Date:   Mon, 29 Aug 2022 15:11:26 +0200
Message-Id: <20220728-rpi-analog-tv-properties-v2-12-459522d653a7@cerno.tech>
In-Reply-To: <20220728-rpi-analog-tv-properties-v2-0-459522d653a7@cerno.tech>
References: <20220728-rpi-analog-tv-properties-v2-0-459522d653a7@cerno.tech>
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From: Geert Uytterhoeven <geert@linux-m68k.org>=0D
=0D
It is fairly common for named video modes to contain dashes (e.g.=0D
"tt-mid" on Atari, "dblntsc-ff" on Amiga).  Currently such mode names=0D
are not recognized, as the dash is considered to be a separator between=0D
mode name and bpp.=0D
=0D
Fix this by skipping any dashes that are not followed immediately by a=0D
digit when looking for the separator.=0D
=0D
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>=0D
Reviewed-by: Hans de Goede <hdegoede@redhat.com>=0D
Signed-off-by: Maxime Ripard <maxime@cerno.tech>=0D
=0D
diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c=0D
index b4e1ff56b4d8..99a21e5cd00d 100644=0D
--- a/drivers/gpu/drm/drm_modes.c=0D
+++ b/drivers/gpu/drm/drm_modes.c=0D
@@ -2263,6 +2263,8 @@ bool drm_mode_parse_command_line_for_connector(const =
char *mode_option,=0D
 =0D
 	/* Try to locate the bpp and refresh specifiers, if any */=0D
 	bpp_ptr =3D strnchr(name, options_off, '-');=0D
+	while (bpp_ptr && !isdigit(bpp_ptr[1]))=0D
+		bpp_ptr =3D strnchr(bpp_ptr + 1, options_off, '-');=0D
 	if (bpp_ptr)=0D
 		bpp_off =3D bpp_ptr - name;=0D
 =0D
=0D
-- =0D
b4 0.10.0-dev-65ba7=0D