linux-kernel - [PATCH v2 10/34] [media] DaVinci-VPBE: Check return value of a setup_if_config() call in vpbe_set

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Date:   Sun, 6 Nov 2016 21:00:43 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     Hans Verkuil <hverkuil@...all.nl>,
        "Lad, Prabhakar" <prabhakar.csengg@...il.com>,
        Manjunath Hadli <manjunath.hadli@...com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org
Cc:     Hans Verkuil <hans.verkuil@...co.com>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH v2 10/34] [media] DaVinci-VPBE: Check return value of a
 setup_if_config() call in vpbe_set_output()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sun, 6 Nov 2016 20:40:20 +0100

* A function was called over the pointer "setup_if_config" in the data
  structure "venc_platform_data". But the return value was not used so far.
  Thus assign it to the local variable "ret" which will be checked with
  the next statement.

  Fixes: 9a7f95ad1c946efdd7a7a72df27db738260a0fd8 ("[media] davinci vpbe: add dm365 VPBE display driver changes")

* Pass a value to this function call without storing it in an intermediate
  variable before.

* Delete the local variable "if_params" which became unnecessary with
  this refactoring.

Acked-by: Lad, Prabhakar <prabhakar.csengg@...il.com>
Reviewed-by: Hans Verkuil <hverkuil@...all.nl>
Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---

v2: Keep the assignment statement on one line despite of its length
    of 82 characters.

 drivers/media/platform/davinci/vpbe.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/media/platform/davinci/vpbe.c b/drivers/media/platform/davinci/vpbe.c
index 19611a2..d04d6b7 100644
--- a/drivers/media/platform/davinci/vpbe.c
+++ b/drivers/media/platform/davinci/vpbe.c
@@ -227,7 +227,6 @@ static int vpbe_set_output(struct vpbe_device *vpbe_dev, int index)
 			vpbe_current_encoder_info(vpbe_dev);
 	struct vpbe_config *cfg = vpbe_dev->cfg;
 	struct venc_platform_data *venc_device = vpbe_dev->venc_device;
-	u32 if_params;
 	int enc_out_index;
 	int sd_index;
 	int ret = 0;
@@ -257,5 +257,4 @@ static int vpbe_set_output(struct vpbe_device *vpbe_dev, int index)
 		}
 
-		if_params = cfg->outputs[index].if_params;
-		venc_device->setup_if_config(if_params);
+		ret = venc_device->setup_if_config(cfg->outputs[index].if_params);
 		if (ret)
-- 
2.10.2