linux-kernel - [PATCH v4 3/7] xen-pciback: fold read_dev

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 06 Jul 2016 00:57:43 -0600
From:	"Jan Beulich" <JBeulich@...e.com>
To:	"David Vrabel" <david.vrabel@...rix.com>,
	"Boris Ostrovsky" <boris.ostrovsky@...cle.com>,
	"Juergen Gross" <JGross@...e.com>
Cc:	"xen-devel" <xen-devel@...ts.xenproject.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH v4 3/7] xen-pciback: fold read_dev_bar() into its now
 single caller

Signed-off-by: Jan Beulich <jbeulich@...e.com>
---
 drivers/xen/xen-pciback/conf_space_header.c |   33 +++++++++++-----------------
 1 file changed, 13 insertions(+), 20 deletions(-)

--- 4.7-rc6-xen-pciback.orig/drivers/xen/xen-pciback/conf_space_header.c
+++ 4.7-rc6-xen-pciback/drivers/xen/xen-pciback/conf_space_header.c
@@ -209,11 +209,14 @@ static int bar_read(struct pci_dev *dev,
 	return 0;
 }
 
-static inline void read_dev_bar(struct pci_dev *dev,
-				struct pci_bar_info *bar_info, int offset)
+static void *bar_init(struct pci_dev *dev, int offset)
 {
 	int	pos;
 	struct resource	*res = dev->resource;
+	struct pci_bar_info *bar = kzalloc(sizeof(*bar), GFP_KERNEL);
+
+	if (!bar)
+		return ERR_PTR(-ENOMEM);
 
 	if (offset == PCI_ROM_ADDRESS || offset == PCI_ROM_ADDRESS1)
 		pos = PCI_ROM_RESOURCE;
@@ -223,31 +226,21 @@ static inline void read_dev_bar(struct p
 				PCI_BASE_ADDRESS_MEM_TYPE_MASK)) ==
 			   (PCI_BASE_ADDRESS_SPACE_MEMORY |
 				PCI_BASE_ADDRESS_MEM_TYPE_64))) {
-			bar_info->val = res[pos - 1].start >> 32;
-			bar_info->len_val = -resource_size(&res[pos - 1]) >> 32;
-			return;
+			bar->val = res[pos - 1].start >> 32;
+			bar->len_val = -resource_size(&res[pos - 1]) >> 32;
+			return bar;
 		}
 	}
 
 	if (!res[pos].flags ||
 	    (res[pos].flags & (IORESOURCE_DISABLED | IORESOURCE_UNSET |
 			       IORESOURCE_BUSY)))
-		return;
-
-	bar_info->val = res[pos].start |
-			(res[pos].flags & PCI_REGION_FLAG_MASK);
-	bar_info->len_val = -resource_size(&res[pos]) |
-			    (res[pos].flags & PCI_REGION_FLAG_MASK);
-}
-
-static void *bar_init(struct pci_dev *dev, int offset)
-{
-	struct pci_bar_info *bar = kzalloc(sizeof(*bar), GFP_KERNEL);
-
-	if (!bar)
-		return ERR_PTR(-ENOMEM);
+		return bar;
 
-	read_dev_bar(dev, bar, offset);
+	bar->val = res[pos].start |
+		   (res[pos].flags & PCI_REGION_FLAG_MASK);
+	bar->len_val = -resource_size(&res[pos]) |
+		       (res[pos].flags & PCI_REGION_FLAG_MASK);
 
 	return bar;
 }