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Petersen" , Linux Kernel Mailinglist , Linux SCSI Mailinglist Subject: Re: [PATCH v2 3/3] scsi: don't add scsi command result bytes Message-ID: <20180613115929.GC12438@infradead.org> References: <20180613075349.7509-1-jthumshirn@suse.de> <20180613075349.7509-4-jthumshirn@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180613075349.7509-4-jthumshirn@suse.de> User-Agent: Mutt/1.9.2 (2017-12-15) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 13, 2018 at 09:53:49AM +0200, Johannes Thumshirn wrote: > Some drivers are ADDing the scsi command's result bytes instead of > ORing them. > > While this can produce correct results it has unexpected side effects. > > Signed-off-by: Johannes Thumshirn Looks good, Reviewed-by: Christoph Hellwig > - cmd->result = (DID_OK << 16) + (l & STATUS_MASK); > + cmd->result = DID_OK << 16 | (l & STATUS_MASK); Although I would have keep the braces around the shift operators to stick closer to the original code. But the code should be fine even without them.