linux-kernel - [PATCH v2 4/4] arm64: Do not expose PCI mmap through procfs

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Date:   Wed, 15 Mar 2017 20:42:39 +0000
From:   David Woodhouse <dwmw2@...radead.org>
To:     linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Mark Rutland <mark.rutland@....com>
Subject: [PATCH v2 4/4] arm64: Do not expose PCI mmap through procfs

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

Signed-off-by: David Woodhouse <dwmw@...zon.co.uk>
---
We shouldn't do this bit. But you did ask...

 drivers/pci/proc.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c
index 5cd960c..233d549 100644
--- a/drivers/pci/proc.c
+++ b/drivers/pci/proc.c
@@ -17,6 +17,11 @@
 
 static int proc_initialized;	/* = 0 */
 
+#ifdef __aarch64__
+/* ARM64 wants to be special and not expose this through /proc like everyone else */
+#undef HAVE_PCI_MMAP
+#endif
+
 static loff_t proc_bus_pci_lseek(struct file *file, loff_t off, int whence)
 {
 	struct pci_dev *dev = PDE_DATA(file_inode(file));
-- 
dwmw2
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