From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alex Williamson Subject: Re: [PATCH] Drop unnecessary pcibio_err_to_errno() Date: Fri, 18 Nov 2016 10:02:41 -0700 Message-ID: <20161118100241.7019379e@t450s.home> References: <1479469658-26561-1-git-send-email-caoj.fnst@cn.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: , To: Cao jin Return-path: Received: from mx1.redhat.com ([209.132.183.28]:58550 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753848AbcKRRCm (ORCPT ); Fri, 18 Nov 2016 12:02:42 -0500 In-Reply-To: <1479469658-26561-1-git-send-email-caoj.fnst@cn.fujitsu.com> Sender: kvm-owner@vger.kernel.org List-ID: Please prefix patches with their functional area, for instance I'll prepend "vfio/pci" to this. Had you not cc'd me, I wouldn't have noticed this patch w/o some mention of vfio in the subject. On Fri, 18 Nov 2016 19:47:38 +0800 Cao jin wrote: > pci_user_read/write_config_xxxx() already does the translation. > It would be helpful to mention in the commit where this translation was added to those functions, d97ffe236894 ("PCI: Fix return value from pci_user_{read,write}_config_*()") It's also worthwhile to mention that no change in behavior is expected since pcibios_err_to_errno() will not mangle existing errno values, the call is simply unnecessary given the previous conversion. I'll modify the title and commit log as described and apply. Thanks, Alex > Signed-off-by: Cao jin > --- > drivers/vfio/pci/vfio_pci_config.c | 10 +++++----- > 1 file changed, 5 insertions(+), 5 deletions(-) > > diff --git a/drivers/vfio/pci/vfio_pci_config.c b/drivers/vfio/pci/vfio_pci_config.c > index 65d4a30..e4220ca 100644 > --- a/drivers/vfio/pci/vfio_pci_config.c > +++ b/drivers/vfio/pci/vfio_pci_config.c > @@ -152,7 +152,7 @@ static int vfio_user_config_read(struct pci_dev *pdev, int offset, > > *val = cpu_to_le32(tmp_val); > > - return pcibios_err_to_errno(ret); > + return ret; > } > > static int vfio_user_config_write(struct pci_dev *pdev, int offset, > @@ -173,7 +173,7 @@ static int vfio_user_config_write(struct pci_dev *pdev, int offset, > break; > } > > - return pcibios_err_to_errno(ret); > + return ret; > } > > static int vfio_default_config_read(struct vfio_pci_device *vdev, int pos, > @@ -257,7 +257,7 @@ static int vfio_direct_config_read(struct vfio_pci_device *vdev, int pos, > > ret = vfio_user_config_read(vdev->pdev, pos, val, count); > if (ret) > - return pcibios_err_to_errno(ret); > + return ret; > > if (pos >= PCI_CFG_SPACE_SIZE) { /* Extended cap header mangling */ > if (offset < 4) > @@ -295,7 +295,7 @@ static int vfio_raw_config_read(struct vfio_pci_device *vdev, int pos, > > ret = vfio_user_config_read(vdev->pdev, pos, val, count); > if (ret) > - return pcibios_err_to_errno(ret); > + return ret; > > return count; > } > @@ -1089,7 +1089,7 @@ static int vfio_msi_config_write(struct vfio_pci_device *vdev, int pos, > start + PCI_MSI_FLAGS, > flags); > if (ret) > - return pcibios_err_to_errno(ret); > + return ret; > } > > return count;