kernel/drivers/video/fbdev/sh7760fb.c, branch linux-rolling-stable

fbdev: sh7760fb: Fix a possible memory leak in sh7760fb_alloc_mem()

2024-12-05T13:02:14Z

[ Upstream commit f89d17ae2ac42931be2a0153fecbf8533280c927 ] When information such as info->screen_base is not ready, calling sh7760fb_free_mem() does not release memory correctly. Call dma_free_coherent() instead. Fixes: 4a25e41831ee ("video: sh7760fb: SH7760/SH7763 LCDC framebuffer driver") Signed-off-by: Zhen Lei Reviewed-by: Dmitry Baryshkov Signed-off-by: Helge Deller Signed-off-by: Sasha Levin

fbdev: Switch back to struct platform_driver::remove()

2024-10-08T19:47:18Z

After commit 0edb555a65d1 ("platform: Make platform_driver::remove() return void") .remove() is (again) the right callback to implement for platform drivers. Convert all platform drivers below drivers/video/fbdev to use .remove(), with the eventual goal to drop struct platform_driver::remove_new(). As .remove() and .remove_new() have the same prototypes, conversion is done by just changing the structure member name in the driver initializer. While touching these files, make indention of the struct initializer consistent in several files. Signed-off-by: Uwe Kleine-König Reviewed-by: Thomas Zimmermann Signed-off-by: Helge Deller

fbdev/sh7760fb: Use fbdev I/O helpers

2023-08-04T13:54:38Z

Set struct fb_ops and with FB_DEFAULT_IOMEM_OPS, fbdev's initializer for I/O memory. Sets the callbacks to the cfb_ and fb_io_ functions. Select the correct modules with Kconfig's FB_IOMEM_HELPERS token. The macro and token set the currently selected values, so there is no functional change. v3: * use _IOMEM_ in commit message v2: * updated to use _IOMEM_ tokens Signed-off-by: Thomas Zimmermann Reviewed-by: Sam Ravnborg Acked-by: Helge Deller Link: https://patchwork.freedesktop.org/patch/msgid/20230803184034.6456-39-tzimmermann@suse.de

Merge tag 'drm-misc-next-2023-07-13' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

2023-07-17T13:37:57Z

drm-misc-next for v6.6: UAPI Changes: * fbdev: * Make fbdev userspace interfaces optional; only leaves the framebuffer console active * prime: * Support dma-buf self-import for all drivers automatically: improves support for many userspace compositors Cross-subsystem Changes: * backlight: * Fix interaction with fbdev in several drivers * base: Convert struct platform.remove to return void; part of a larger, tree-wide effort * dma-buf: Acquire reservation lock for mmap() in exporters; part of an on-going effort to simplify locking around dma-bufs * fbdev: * Use Linux device instead of fbdev device in many places * Use deferred-I/O helper macros in various drivers * i2c: Convert struct i2c from .probe_new to .probe; part of a larger, tree-wide effort * video: * Avoid including Core Changes: * atomic: * Improve logging * prime: * Remove struct drm_driver.gem_prime_mmap plus driver updates: all drivers now implement this callback with drm_gem_prime_mmap() * gem: * Support execution contexts: provides locking over multiple GEM objects * ttm: * Support init_on_free * Swapout fixes Driver Changes: * accel: * ivpu: MMU updates; Support debugfs * ast: * Improve device-model detection * Cleanups * bridge: * dw-hdmi: Improve support for YUV420 bus format * dw-mipi-dsi: Fix enable/disable of DSI controller * lt9611uxc: Use MODULE_FIRMWARE() * ps8640: Remove broken EDID code * samsung-dsim: Fix command transfer * tc358764: Handle HS/VS polarity; Use BIT() macro; Various cleanups * Cleanups * ingenic: * Kconfig REGMAP fixes * loongson: * Support display controller * mgag200: * Minor fixes * mxsfb: * Support disabling overlay planes * nouveau: * Improve VRAM detection * Various fixes and cleanups * panel: * panel-edp: Support AUO B116XAB01.4 * Support Visionox R66451 plus DT bindings * Cleanups * ssd130x: * Support per-controller default resolution plus DT bindings * Reduce memory-allocation overhead * Cleanups * tidss: * Support TI AM625 plus DT bindings * Implement new connector model plus driver updates * vkms * Improve write-back support * Documentation fixes Signed-off-by: Daniel Vetter From: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/20230713090830.GA23281@linux-uq9g

fbdev/sh7760fb: Use hardware device with dev_() output during probe

2023-06-27T07:58:50Z

Call output helpers in the probe function with the hardware device. The virtual fbdev device has not been initialized at that point. Also prepares fbdev for making struct fb_info.dev optional. Signed-off-by: Thomas Zimmermann Reviewed-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20230613110953.24176-29-tzimmermann@suse.de

fbdev/sh7760fb: Alloc DMA memory from hardware device

2023-06-27T07:58:50Z

Pass the hardware device to the DMA helpers dma_alloc_coherent() and dma_free_coherent(). The fbdev device that is currently being used is a software device and does not provide DMA memory. Also update the related dev_*() output statements similarly. Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Link: https://patchwork.freedesktop.org/patch/msgid/20230613110953.24176-28-tzimmermann@suse.de

fbdev/sh7760fb: Output messages with fb_dbg()

2023-06-27T07:58:50Z

Fix cases were output helpers are called with struct fb_info.dev. Use fb_dbg() instead. Prepares fbdev for making struct fb_info.dev optional. Signed-off-by: Thomas Zimmermann Reviewed-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20230613110953.24176-27-tzimmermann@suse.de

fbdev/sh7760fb: Use fb_dbg() in sh7760fb_get_color_info()

2023-06-27T07:58:50Z

Give struct fb_info to sh7760fb_get_color_info() and use it in call to fb_dbg(). Prepares fbdev for making struct fb_info.dev optional. Signed-off-by: Thomas Zimmermann Reviewed-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20230613110953.24176-26-tzimmermann@suse.de

fbdev: sh7760fb: Fix -Wimplicit-fallthrough warnings

2023-06-22T17:37:52Z

Fix the following fallthrough warnings seen after building sh architecture with sh7763rdp_defconfig configuration: drivers/video/fbdev/sh7760fb.c: In function 'sh7760fb_get_color_info': drivers/video/fbdev/sh7760fb.c:138:23: warning: this statement may fall through [-Wimplicit-fallthrough=] 138 | lgray = 1; | ~~~~~~^~~ drivers/video/fbdev/sh7760fb.c:139:9: note: here 139 | case LDDFR_4BPP: | ^~~~ drivers/video/fbdev/sh7760fb.c:143:23: warning: this statement may fall through [-Wimplicit-fallthrough=] 143 | lgray = 1; | ~~~~~~^~~ drivers/video/fbdev/sh7760fb.c:144:9: note: here 144 | case LDDFR_8BPP: | ^~~~ Signed-off-by: Gustavo A. R. Silva Signed-off-by: Helge Deller

fbdev: sh7760fb: Convert to platform remove callback returning void

2023-04-24T09:48:32Z

The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is (mostly) ignored and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new() which already returns void. Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König Signed-off-by: Helge Deller