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drm: modes: Revert cc344980c7 "replace simple_strtoul by kstrtouint"

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My latest commit introduce some case where a valid mode, could be
rejected.
simple_strtox functions stop at first non-digit character, but kstrtox
not.
So args like "video=HDMI-A-1:720x480-16@60" will be reject when checking
16@.

Discussions about this change comes to the conclusion that the best
solution is to revert my commit cc344980c7.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1449838739-29969-1-git-send-email-clabbe.montjoie@gmail.com
This commit is contained in:
LABBE Corentin 2015-12-11 13:58:59 +01:00 committed by Daniel Vetter
parent 5dec293b24
commit d6e6e14fa6
1 changed files with 5 additions and 11 deletions
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16
drivers/gpu/drm/drm_modes.c
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@ -1262,7 +1262,7 @@ bool drm_mode_parse_command_line_for_connector(const char *mode_option,
unsigned int xres = 0, yres = 0, bpp = 32, refresh = 0;
bool yres_specified = false, cvt = false, rb = false;
bool interlace = false, margins = false, was_digit = false;
int i, err;
int i;
enum drm_connector_force force = DRM_FORCE_UNSPECIFIED;
#ifdef CONFIG_FB
@ -1282,9 +1282,7 @@ bool drm_mode_parse_command_line_for_connector(const char *mode_option,
case '@':
if (!refresh_specified && !bpp_specified &&
!yres_specified && !cvt && !rb && was_digit) {
err = kstrtouint(&name[i + 1], 10, &refresh);
if (err)
return false;
refresh = simple_strtol(&name[i+1], NULL, 10);
refresh_specified = true;
was_digit = false;
} else
@ -1293,9 +1291,7 @@ bool drm_mode_parse_command_line_for_connector(const char *mode_option,
case '-':
if (!bpp_specified && !yres_specified && !cvt &&
!rb && was_digit) {
err = kstrtouint(&name[i + 1], 10, &bpp);
if (err)
return false;
bpp = simple_strtol(&name[i+1], NULL, 10);
bpp_specified = true;
was_digit = false;
} else
@ -1303,9 +1299,7 @@ bool drm_mode_parse_command_line_for_connector(const char *mode_option,
break;
case 'x':
if (!yres_specified && was_digit) {
err = kstrtouint(&name[i + 1], 10, &yres);
if (err)
return false;
yres = simple_strtol(&name[i+1], NULL, 10);
yres_specified = true;
was_digit = false;
} else
@ -1529,4 +1523,4 @@ int drm_mode_convert_umode(struct drm_display_mode *out,
out:
return ret;
}
}