From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Carpenter Subject: [patch] iommu/vt-d: silence an uninitialized variable warning Date: Wed, 6 Apr 2016 21:38:56 +0300 Message-ID: <20160406183856.GB9593@mwanda> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: David Woodhouse Cc: kernel-janitors-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: iommu@lists.linux-foundation.org My static checker complains that "dma_alias" is uninitialized unless we are dealing with a pci device. This is true but harmless. Anyway, we can flip the condition around to silence the warning. Signed-off-by: Dan Carpenter diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index a2e1b7f..e1852e8 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -2458,7 +2458,7 @@ static struct dmar_domain *get_domain_for_dev(struct device *dev, int gaw) } /* register PCI DMA alias device */ - if (req_id != dma_alias && dev_is_pci(dev)) { + if (dev_is_pci(dev) && req_id != dma_alias) { tmp = dmar_insert_one_dev_info(iommu, PCI_BUS_NUM(dma_alias), dma_alias & 0xff, NULL, domain);