linux-kernel - [PATCH v2 23/27] ia64: Remove redundant valid_mmap_phys_addr_range() from pci_mmap_page

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, 12 Apr 2017 13:26:12 +0100
From:   David Woodhouse <dwmw2@...radead.org>
To:     linux-pci@...r.kernel.org, linux-arch@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 23/27] ia64: Remove redundant valid_mmap_phys_addr_range() from pci_mmap_page_range()

From: David Woodhouse <dwmw@...zon.co.uk>

We know we are within a valid MMIO BAR by the time this function gets called;
there's no need to check.

Signed-off-by: David Woodhouse <dwmw@...zon.co.uk>
---
 arch/ia64/pci/pci.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 053c688..27020f3 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -439,9 +439,6 @@ pci_mmap_page_range (struct pci_dev *dev, int bar,
 		 */
 		return -EINVAL;
 
-	if (!valid_mmap_phys_addr_range(vma->vm_pgoff, size))
-		return -EINVAL;
-
 	prot = phys_mem_access_prot(NULL, vma->vm_pgoff, size,
 				    vma->vm_page_prot);
 
-- 
2.9.3