[PATCH] gpu/drm/bridge/sii9234: Use common error handling code in sii9234_writebm()

[SF Markus Elfring]

From: Markus Elfring <elfr...@users.sourceforge.net>
Date: Sun, 22 Oct 2017 21:21:44 +0200

* Add a jump target so that a bit of exception handling can be better
  reused at the end of this function.

  This issue was detected by using the Coccinelle software.

* Adjust condition checks.

Signed-off-by: Markus Elfring <elfr...@users.sourceforge.net>
---
 drivers/gpu/drm/bridge/sii9234.c | 28 ++++++++++------------------
 1 file changed, 10 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/bridge/sii9234.c b/drivers/gpu/drm/bridge/sii9234.c
index c77000626c22..fbdacdaf485c 100644
--- a/drivers/gpu/drm/bridge/sii9234.c
+++ b/drivers/gpu/drm/bridge/sii9234.c
@@ -231,30 +231,22 @@ static int sii9234_writebm(struct sii9234 *ctx, int id, 
int offset,
                return ctx->i2c_error;
 
        ret = i2c_smbus_write_byte(client, offset);
-       if (ret < 0) {
-               dev_err(ctx->dev, "writebm: %4s[0x%02x] <- 0x%02x\n",
-                       sii9234_client_name[id], offset, value);
-               ctx->i2c_error = ret;
-               return ret;
-       }
+       if (ret)
+               goto report_failure;
 
        ret = i2c_smbus_read_byte(client);
-       if (ret < 0) {
-               dev_err(ctx->dev, "writebm: %4s[0x%02x] <- 0x%02x\n",
-                       sii9234_client_name[id], offset, value);
-               ctx->i2c_error = ret;
-               return ret;
-       }
+       if (ret)
+               goto report_failure;
 
        value = (value & mask) | (ret & ~mask);
-
        ret = i2c_smbus_write_byte_data(client, offset, value);
-       if (ret < 0) {
-               dev_err(ctx->dev, "writebm: %4s[0x%02x] <- 0x%02x\n",
-                       sii9234_client_name[id], offset, value);
-               ctx->i2c_error = ret;
-       }
+       if (!ret)
+               return 0;
 
+report_failure:
+       dev_err(ctx->dev, "writebm: %4s[0x%02x] <- 0x%02x\n",
+               sii9234_client_name[id], offset, value);
+       ctx->i2c_error = ret;
        return ret;
 }
 
-- 
2.14.2

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