[PATCH v2 18/18] fbdev: Document that framebuffer_alloc() returns zero'ed data
From: Thomas Zimmermann <tzimmermann@suse.de>
Date: 2023-07-13 13:04:52
Also in:
amd-gfx, dri-devel, kvm, linux-arm-kernel, linux-fbdev, linux-hyperv, linux-media, linux-omap, linux-sh, linux-staging, linuxppc-dev, lkml
Subsystem:
framebuffer core, framebuffer layer, the rest · Maintainers:
Simona Vetter, Helge Deller, Linus Torvalds
Most fbdev drivers depend on framebuffer_alloc() to initialize the allocated memory to 0. Document this guarantee. Suggested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Cc: Helge Deller <deller@gmx.de> --- drivers/video/fbdev/core/fb_info.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/video/fbdev/core/fb_info.c b/drivers/video/fbdev/core/fb_info.c
index 8bdbefdd4b70..1b7615fc393d 100644
--- a/drivers/video/fbdev/core/fb_info.c
+++ b/drivers/video/fbdev/core/fb_info.c@@ -13,7 +13,8 @@ * * Creates a new frame buffer info structure. Also reserves @size bytes * for driver private data (info->par). info->par (if any) will be - * aligned to sizeof(long). + * aligned to sizeof(long). Both, the instance of struct fb_info and + * the driver private data, are cleared to zero. * * Returns the new structure, or NULL if an error occurred. *
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2.41.0