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staging: fbtft: core: set smem_len before fb_deferred_io_init call
commit 81e8788 upstream. The fbtft_framebuffer_alloc() calls fb_deferred_io_init() before initializing info->fix.smem_len. It is set to zero by the framebuffer_alloc() function. It will trigger a WARN_ON() at the start of fb_deferred_io_init() and the function will not do anything. Fixes: 856082f ("fbdev: defio: fix the pagelist corruption") Signed-off-by: Peter Suti <peter.suti@streamunlimited.com> Link: https://lore.kernel.org/r/20220727073550.1491126-1-peter.suti@streamunlimited.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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