From 8f361b279f76b1e9548c9b3e59da63d3dec11bea Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Mon, 23 Mar 2015 11:16:21 +0100 Subject: [PATCH] gpu: ipu-v3: turns out the IPU can only downsize 4:1 The value for downsizing 8:1 is marked as reserved in the technical reference manual and the documentation states downsizing capability up to 4:1 only. Signed-off-by: Philipp Zabel --- drivers/gpu/ipu-v3/ipu-ic.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/ipu-v3/ipu-ic.c b/drivers/gpu/ipu-v3/ipu-ic.c index ad75588e1629..1dcb96ccda66 100644 --- a/drivers/gpu/ipu-v3/ipu-ic.c +++ b/drivers/gpu/ipu-v3/ipu-ic.c @@ -297,8 +297,8 @@ static int calc_resize_coeffs(struct ipu_ic *ic, return -EINVAL; } - /* Cannot downsize more than 8:1 */ - if ((out_size << 3) < in_size) { + /* Cannot downsize more than 4:1 */ + if ((out_size << 2) < in_size) { dev_err(ipu->dev, "Unsupported downsize\n"); return -EINVAL; } -- 2.20.1