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From: Takashi Iwai <tiwai@suse.de>
To: Gerd Hoffmann <kraxel@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	virtualization@lists.linux.dev, dri-devel@lists.freedesktop.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH] drm/bochs: Fix DPMS regression
Date: Tue,  4 Mar 2025 14:41:57 +0100	[thread overview]
Message-ID: <20250304134203.20534-1-tiwai@suse.de> (raw)

The recent rewrite with the use of regular atomic helpers broke the
DPMS unblanking on X11.  Fix it by moving the call of
bochs_hw_blank(false) from CRTC mode_set_nofb() to atomic_enable().

Fixes: 2037174993c8 ("drm/bochs: Use regular atomic helpers")
Link: https://bugzilla.suse.com/show_bug.cgi?id=1238209
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 drivers/gpu/drm/tiny/bochs.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/tiny/bochs.c b/drivers/gpu/drm/tiny/bochs.c
index 76e29950a807..c1c7d6c9e85f 100644
--- a/drivers/gpu/drm/tiny/bochs.c
+++ b/drivers/gpu/drm/tiny/bochs.c
@@ -323,8 +323,6 @@ static void bochs_hw_setmode(struct bochs_device *bochs, struct drm_display_mode
 			 bochs->xres, bochs->yres, bochs->bpp,
 			 bochs->yres_virtual);
 
-	bochs_hw_blank(bochs, false);
-
 	bochs_dispi_write(bochs, VBE_DISPI_INDEX_ENABLE,      0);
 	bochs_dispi_write(bochs, VBE_DISPI_INDEX_BPP,         bochs->bpp);
 	bochs_dispi_write(bochs, VBE_DISPI_INDEX_XRES,        bochs->xres);
@@ -494,6 +492,9 @@ static int bochs_crtc_helper_atomic_check(struct drm_crtc *crtc,
 static void bochs_crtc_helper_atomic_enable(struct drm_crtc *crtc,
 					    struct drm_atomic_state *state)
 {
+	struct bochs_device *bochs = to_bochs_device(crtc->dev);
+
+	bochs_hw_blank(bochs, false);
 }
 
 static void bochs_crtc_helper_atomic_disable(struct drm_crtc *crtc,
-- 
2.43.0


             reply	other threads:[~2025-03-04 13:42 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-03-04 13:41 Takashi Iwai [this message]
2025-03-04 14:13 ` Thomas Zimmermann

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