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modesetting: Fix page flipping under DRI 3.2.

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The check for "no modifier specified" in drmmode_is_format_supported()
should check for DRM_FORMAT_MOD_INVALID, not for zero, as zero actually
means DRM_FORMAT_MOD_LINEAR.

This allows page-flipping again when appropriate, as
tested under nouveau and ati drivers.

Fixes: 9d147305b4 ("modesetting: Check if buffer format is supported when flipping")
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
This commit is contained in:
Mario Kleiner 2018-03-12 17:57:50 +01:00 committed by Adam Jackson
parent 136b45e0c0
commit 757e0ee188
1 changed files with 1 additions and 1 deletions
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hw/xfree86/drivers/modesetting/drmmode_display.c
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@ -90,7 +90,7 @@ drmmode_is_format_supported(ScrnInfoPtr scrn, uint32_t format, uint64_t modifier
if (iter->format != format)
continue;
if (modifier == 0) {
if (modifier == DRM_FORMAT_MOD_INVALID) {
found = TRUE;
break;
}