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fbdev: ssd1307fb: fix memory address smem_start.

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the smem_start pointer of the framebuffer info struct needs to hold the
physical address rather than the logical address. Right now the logical
address returned by kmalloc is stored. This patch converts this address
to a physical address and thus fixes a driver crash on mmaping the
framebuffer memory due to an access to the wrong memory address.

Signed-off-by: Thomas Niederprüm <niederp@physik.uni-kl.de>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Thomas Niederprüm 2015-03-31 20:27:07 +02:00 committed by Tomi Valkeinen
parent 2fa3b4c4a7
commit 258c0ea21d
1 changed files with 1 additions and 1 deletions
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2
drivers/video/fbdev/ssd1307fb.c
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@ -515,7 +515,7 @@ static int ssd1307fb_probe(struct i2c_client *client,
info->var.blue.offset = 0;
info->screen_base = (u8 __force __iomem *)vmem;
info->fix.smem_start = (unsigned long)vmem;
info->fix.smem_start = __pa(vmem);
info->fix.smem_len = vmem_size;
fb_deferred_io_init(info);