Subject: Coverity: pca953x_gpio_get_multiple(): Uninitialized variables

From: coverity-bot <[email-masked]>
Date: Fri, 17 Apr 2020 14:58:20 -0700

Hello!

This is an experimental semi-automated report about issues detected by
Coverity from a scan of next-20200417 as part of the linux-next scan project:
https://scan.coverity.com/projects/linux-next-weekly-scan

You're getting this email because you were associated with the identified
lines of code (noted below) that were touched by commits:

  Tue Apr 14 11:28:42 2020 -0400
    96d7c7b3e654 ("gpio: gpio-pca953x, Add get_multiple function")

Coverity reported the following:

*** CID 1492652:  Uninitialized variables  (UNINIT)
/drivers/gpio/gpio-pca953x.c: 499 in pca953x_gpio_get_multiple()
493     			if (ret < 0)
494     				return ret;
495     		}
496     		/* reg_val is relative to the last read byte,
497     		 * so only shift the relative bits
498     		 */
vvv     CID 1492652:  Uninitialized variables  (UNINIT)
vvv     Using uninitialized value "reg_val".
499     		value = (reg_val >> (i % 8)) & 0x01;
500     		__assign_bit(i, bits, value);
501     	}
502     	return ret;
503     }
504

If this is a false positive, please let us know so we can mark it as
such, or teach the Coverity rules to be smarter. If not, please make
sure fixes get into linux-next. :) For patches fixing this, please
include these lines (but double-check the "Fixes" first):

Reported-by: coverity-bot <[email-masked]>
Addresses-Coverity-ID: 1492652 ("Uninitialized variables")
Fixes: 96d7c7b3e654 ("gpio: gpio-pca953x, Add get_multiple function")

Thanks for your attention!

-- 
Coverity-bot