Merge branch 'parisc-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull parisc fixes from Helge Deller:
 "This contains a kernel segfault fix when reading /proc/kpageflags or
  /proc/kpagecount, two fixes for the serial port and PCI graphic card
  support on C8000 workstations and a fix to use unshadowed registers
  for flushing D- and I-caches."

* 'parisc-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Use unshadowed index register for flush instructions in flush_dcache_page_asm and flush_icache_page_asm
  parisc: provide pci_mmap_page_range() for parisc
  parisc: fix serial ports on C8000 workstation
  parisc: fix kernel BUG at arch/parisc/include/asm/mmzone.h:50 (part 2)

1 files changed, 27 insertions, 0 deletions

diff --git a/arch/parisc/kernel/pci.c b/arch/parisc/kernel/pci.c
index 60309051875..64f2764a8ce 100644
--- a/arch/parisc/kernel/pci.c
+++ b/arch/parisc/kernel/pci.c
@@ -220,6 +220,33 @@ resource_size_t pcibios_align_resource(void *data, const struct resource *res,
 }
 
 
+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.