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@xxxxxxxxxxxxxxxx> Acked-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx> --- drivers/video/fbdev/ssd1307fb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c index f7ed6d9..61e0ce8 100644 --- a/drivers/video/fbdev/ssd1307fb.c +++ b/drivers/video/fbdev/ssd1307fb.c @@ -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); -- 2.3.0 -- To unsubscribe from this list: send the line "unsubscribe linux-fbdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
