Re: [PATCH] silence warning in drivers/ata/libata-scsi.c when building W=1

From: Tejun Heo
Date: Mon Aug 01 2016 - 11:04:41 EST


On Sun, Jul 31, 2016 at 11:28:34PM -0400, Valdis Kletnieks wrote:
> When building with W=1, we get these warnings:
>
> drivers/ata/libata-scsi.c: In function 'ata_mselect_caching':
> drivers/ata/libata-scsi.c:3637:28: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
> if (mpage[i + 2] & 0xfb != buf[i] & 0xfb) {
> ~~~~~^~~~~~~~~
> drivers/ata/libata-scsi.c: In function 'ata_mselect_control':
> drivers/ata/libata-scsi.c:3702:28: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
> if (mpage[i + 2] & 0xfb != buf[i] & 0xfb) {
> ~~~~~^~~~~~~~~
>
> So give them the extra () and make things a bit clearer for both the
> compiler and programmer...
>
> Signed-off-by: Valdis Kletnieks <valdis.kletnieks@xxxxxx>

The offending commit got already reverted.

Thanks!

--
tejun