staging: iio: meter: add check on return variables

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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>

...

This commit is contained in:

Aya Mahfouz 2015-03-03 16:27:37 +02:00 • committed by Greg Kroah-Hartman

parent 82d28561b7

commit e384b69a35

1 changed files with 16 additions and 14 deletions

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drivers/staging/iio/meter/ade7758_core.c

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