From: Aya Mahfouz <mahfouz.saif.elyazal@gmail.com>
Date: Tue, 3 Mar 2015 14:27:37 +0000 (+0200)
Subject: staging: iio: meter: add check on return variables
X-Git-Tag: omap-for-v4.2/o2_dc~155^2~138^2~650
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e384b69a35ae96055774dbce9dea813043e21142;p=pandora-kernel.git

staging: iio: meter: add check on return variables

adds checks on variables that are used to return values. If
the value is less than zero, this indicates that an error
occurred and hence a message is printed through dev_err.
Checks are made on negative values only since spi_* functions
return negative error codes.

The functions were found using the following script but the
aforementioned modification was what was carried out in the end:
@@
identifier len,f;
@@

-int len;
 ... when != len
     when strict
-len =
+return
        f(...);
-return len;

Signed-off-by: Aya Mahfouz <mahfouz.saif.elyazal@gmail.com>
Reviewed-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

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