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Date: Tue, 3 Mar 2015 08:17:27 +0100
From: Maxime Ripard <maxime.ripard@...e-electrons.com>
To: Thomas Niederprüm <niederp@...sik.uni-kl.de>
Cc: plagnioj@...osoft.com, tomi.valkeinen@...com,
linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCHv2 01/10] fbdev: ssd1307fb: fix memory address smem_start.
On Sun, Mar 01, 2015 at 11:27:54PM +0100, Thomas Niederprüm wrote:
> the smem_start pointer of the framebuffer info struct needs to hold the
> physical address rather than the virtual address. This patch fixes a
> driver crash on mmaping the framebuffer memory due to an access to the
> memory address.
>
> Note however that the memory allocated by kzalloc is not page aligned,
> while the address presented on a mmap call is aligned to the next page
> boudary.
>
> Signed-off-by: Thomas Niederprüm <niederp@...sik.uni-kl.de>
Acked-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
Thanks!
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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