Message ID | 20221020103755.24058-17-tzimmermann@suse.de |
---|---|
State | Handled Elsewhere, archived |
Headers | show
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Thu, 20 Oct 2022 10:38:04 +0000 From: Thomas Zimmermann <tzimmermann@suse.de> To: daniel@ffwll.ch, airlied@gmail.com, sam@ravnborg.org, javierm@redhat.com, mripard@kernel.org, maarten.lankhorst@linux.intel.com Subject: [PATCH 16/21] drm/fb-helper: Call fb_sync in I/O functions Date: Thu, 20 Oct 2022 12:37:50 +0200 Message-Id: <20221020103755.24058-17-tzimmermann@suse.de> X-Mailer: git-send-email 2.38.0 In-Reply-To: <20221020103755.24058-1-tzimmermann@suse.de> References: <20221020103755.24058-1-tzimmermann@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linux-aspeed@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux ASPEED SoC development <linux-aspeed.lists.ozlabs.org> List-Unsubscribe: <https://lists.ozlabs.org/options/linux-aspeed>, <mailto:linux-aspeed-request@lists.ozlabs.org?subject=unsubscribe> List-Archive: <http://lists.ozlabs.org/pipermail/linux-aspeed/> List-Post: <mailto:linux-aspeed@lists.ozlabs.org> List-Help: <mailto:linux-aspeed-request@lists.ozlabs.org?subject=help> List-Subscribe: <https://lists.ozlabs.org/listinfo/linux-aspeed>, <mailto:linux-aspeed-request@lists.ozlabs.org?subject=subscribe> Cc: linux-hyperv@vger.kernel.org, linux-aspeed@lists.ozlabs.org, nouveau@lists.freedesktop.org, dri-devel@lists.freedesktop.org, virtualization@lists.linux-foundation.org, linux-stm32@st-md-mailman.stormreply.com, linux-samsung-soc@vger.kernel.org, amd-gfx@lists.freedesktop.org, linux-rockchip@lists.infradead.org, xen-devel@lists.xenproject.org, linux-sunxi@lists.linux.dev, linux-arm-msm@vger.kernel.org, intel-gfx@lists.freedesktop.org, etnaviv@lists.freedesktop.org, linux-mediatek@lists.infradead.org, spice-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Thomas Zimmermann <tzimmermann@suse.de>, freedreno@lists.freedesktop.org Errors-To: linux-aspeed-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linux-aspeed" <linux-aspeed-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org> |
Series |
drm/fb-helper: Untangle fbdev emulation and helpers
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expand
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diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index f6d22cc4cd876..379e0d2f67198 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -2246,6 +2246,9 @@ static ssize_t drm_fbdev_fb_read(struct fb_info *info, char __user *buf, if (total_size - count < pos) count = total_size - pos; + if (info->fbops->fb_sync) + info->fbops->fb_sync(info); + if (drm_fbdev_use_iomem(info)) ret = fb_read_screen_base(info, buf, count, pos); else @@ -2327,6 +2330,9 @@ static ssize_t drm_fbdev_fb_write(struct fb_info *info, const char __user *buf, count = total_size - pos; } + if (info->fbops->fb_sync) + info->fbops->fb_sync(info); + /* * Copy to framebuffer even if we already logged an error. Emulates * the behavior of the original fbdev implementation.
Call struct fb_ops.fb_sync in drm_fbdev_{read,write}() to mimic the behavior of fbdev. Fbdev implementations of fb_read and fb_write in struct fb_ops invoke fb_sync to synchronize with outstanding operations before I/O. Doing the same in DRM implementations will allow us to use them throughout DRM drivers. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> --- drivers/gpu/drm/drm_fb_helper.c | 6 ++++++ 1 file changed, 6 insertions(+)