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
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@ -13,7 +13,8 @@
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*
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* Creates a new frame buffer info structure. Also reserves @size bytes
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* for driver private data (info->par). info->par (if any) will be
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* aligned to sizeof(long).
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* aligned to sizeof(long). The new instances of struct fb_info and
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* the driver private data are both cleared to zero.
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*
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* Returns the new structure, or NULL if an error occurred.
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*
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