Patch "parisc: provide pci_mmap_page_range() for parisc" has been added to the 3.9-stable tree

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This is a note to let you know that I've just added the patch titled

    parisc: provide pci_mmap_page_range() for parisc

to the 3.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     parisc-provide-pci_mmap_page_range-for-parisc.patch
and it can be found in the queue-3.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 2cc7138f4347df939ce03f313e3d87794bab36f8 Mon Sep 17 00:00:00 2001
From: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
Date: Fri, 14 Jun 2013 09:05:41 +0200
Subject: parisc: provide pci_mmap_page_range() for parisc

From: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>

commit 2cc7138f4347df939ce03f313e3d87794bab36f8 upstream.

pci_mmap_page_range() is needed for X11-server support on C8000 with ATI
FireGL card.

Signed-off-by Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
Signed-off-by: Helge Deller <deller@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 arch/parisc/include/asm/pci.h |    5 +++++
 arch/parisc/kernel/pci.c      |   27 +++++++++++++++++++++++++++
 2 files changed, 32 insertions(+)

--- a/arch/parisc/include/asm/pci.h
+++ b/arch/parisc/include/asm/pci.h
@@ -225,4 +225,9 @@ static inline int pci_get_legacy_ide_irq
 	return channel ? 15 : 14;
 }
 
+#define HAVE_PCI_MMAP
+
+extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
+	enum pci_mmap_state mmap_state, int write_combine);
+
 #endif /* __ASM_PARISC_PCI_H */
--- a/arch/parisc/kernel/pci.c
+++ b/arch/parisc/kernel/pci.c
@@ -220,6 +220,33 @@ resource_size_t pcibios_align_resource(v
 }
 
 
+int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
+			enum pci_mmap_state mmap_state, int write_combine)
+{
+	unsigned long prot;
+
+	/*
+	 * I/O space can be accessed via normal processor loads and stores on
+	 * this platform but for now we elect not to do this and portable
+	 * drivers should not do this anyway.
+	 */
+	if (mmap_state == pci_mmap_io)
+		return -EINVAL;
+
+	if (write_combine)
+		return -EINVAL;
+
+	/*
+	 * Ignore write-combine; for now only return uncached mappings.
+	 */
+	prot = pgprot_val(vma->vm_page_prot);
+	prot |= _PAGE_NO_CACHE;
+	vma->vm_page_prot = __pgprot(prot);
+
+	return remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
+		vma->vm_end - vma->vm_start, vma->vm_page_prot);
+}
+
 /*
  * A driver is enabling the device.  We make sure that all the appropriate
  * bits are set to allow the device to operate as the driver is expecting.


Patches currently in stable-queue which might be from tsbogend@xxxxxxxxxxxxxxxx are

queue-3.9/parisc-provide-pci_mmap_page_range-for-parisc.patch
queue-3.9/parisc-fix-serial-ports-on-c8000-workstation.patch
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