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| author |   Thomas Zimmermann <tzimmermann@suse.de> | 2023-07-15 20:52:00 +0200 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2023-07-24 16:50:39 +0200 |
| commit | c07e1f20dcbe010ceefb7ccdeac0198222366168 (patch) | |
| tree | c031701d8d7bf28cb1e2a5dd18cbc91023de4987 | |
| parent | fbdev: Remove FBINFO_DEFAULT and FBINFO_FLAG_DEFAULT (diff) | |
| download | wireguard-linux-c07e1f20dcbe010ceefb7ccdeac0198222366168.tar.xz wireguard-linux-c07e1f20dcbe010ceefb7ccdeac0198222366168.zip | |
fbdev: Document that framebuffer_alloc() returns zero'ed data
Most fbdev drivers depend on framebuffer_alloc() to initialize the
allocated memory to 0. Document this guarantee.
v3:
* slightly reword the sentence (Miguel)
Suggested-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Sui Jingfeng <suijingfeng@loongson.cn>
Cc: Helge Deller <deller@gmx.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230715185343.7193-19-tzimmermann@suse.de
Diffstat (limited to '')
| -rw-r--r-- | drivers/video/fbdev/core/fb_info.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/video/fbdev/core/fb_info.c b/drivers/video/fbdev/core/fb_info.c index 8bdbefdd4b70..4847ebe50d7d 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). The new instances of struct fb_info and + * the driver private data are both cleared to zero. * * Returns the new structure, or NULL if an error occurred. * |