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From: Thomas Zimmermann <tzimmermann@suse.de>
To: daniel@ffwll.ch, airlied@linux.ie, sam@ravnborg.org,
	mripard@kernel.org, maarten.lankhorst@linux.intel.com,
	christian.koenig@amd.com
Cc: Thomas Zimmermann <tzimmermann@suse.de>, dri-devel@lists.freedesktop.org
Subject: [PATCH 09/10] drm/fb-helper: Copy dma-buf map before flushing shadow fb
Date: Mon, 16 Nov 2020 21:04:36 +0100	[thread overview]
Message-ID: <20201116200437.17977-10-tzimmermann@suse.de> (raw)
In-Reply-To: <20201116200437.17977-1-tzimmermann@suse.de>

Copy the vmap()'ed instance of struct dma_buf_map before modifying it,
in case the implementation of vunmap() depends on the exact address.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/drm_fb_helper.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 13b65dad2ca8..5a22c744378c 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -395,14 +395,15 @@ static int drm_fb_helper_damage_blit(struct drm_fb_helper *fb_helper,
 				     struct drm_clip_rect *clip)
 {
 	struct drm_client_buffer *buffer = fb_helper->buffer;
-	struct dma_buf_map map;
+	struct dma_buf_map map, dst;
 	int ret;
 
 	ret = drm_client_buffer_vmap(buffer, &map);
 	if (ret)
 		return ret;
 
-	drm_fb_helper_damage_blit_real(fb_helper, clip, &map);
+	dst = map;
+	drm_fb_helper_damage_blit_real(fb_helper, clip, &dst);
 
 	drm_client_buffer_vunmap(buffer);
 
-- 
2.29.2

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  parent reply	other threads:[~2020-11-16 20:04 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-16 20:04 [PATCH 00/10] drm/fb-helper: Various fixes and cleanups Thomas Zimmermann
2020-11-16 20:04 ` [PATCH 01/10] drm/fb-helper: Call dirty helper after writing to fbdev Thomas Zimmermann
2020-11-16 20:04   ` Thomas Zimmermann
2020-11-17 16:22   ` Ville Syrjälä
2020-11-17 16:22     ` Ville Syrjälä
2020-11-18  7:56     ` Thomas Zimmermann
2020-11-18  7:56       ` Thomas Zimmermann
2020-11-16 20:04 ` [PATCH 02/10] drm/fb-helper: Unmap client buffer during shutdown Thomas Zimmermann
2020-11-16 20:04 ` [PATCH 03/10] drm/client: Depend on GEM object kmap ref-counting Thomas Zimmermann
2020-11-16 20:04 ` [PATCH 04/10] drm/fb-helper: Rename dirty worker to damage worker Thomas Zimmermann
2020-11-16 20:04 ` [PATCH 05/10] drm/fb-helper: Return early in dirty worker Thomas Zimmermann
2020-11-16 20:04 ` [PATCH 06/10] drm/fb-helper: Separate shadow-buffer flushing and calling dirty callback Thomas Zimmermann
2020-11-16 20:04 ` [PATCH 07/10] drm/fb-helper: Move damage blit code and its setup into separate routine Thomas Zimmermann
2020-11-16 20:04 ` [PATCH 08/10] drm/fb-helper: Restore damage area upon errors Thomas Zimmermann
2020-11-16 20:52   ` Daniel Vetter
2020-11-17 15:14     ` Sebastian Reichel
2020-11-17 16:54       ` Daniel Vetter
2020-11-16 20:04 ` Thomas Zimmermann [this message]
2020-11-16 20:04 ` [PATCH 10/10] drm/fb-helper: Acquire modeset lock around shadow-buffer flushing Thomas Zimmermann
2020-11-16 20:48   ` Daniel Vetter
2020-11-17  8:05     ` Christian König

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