Merge tag 'v3.2-rc2' into staging/for_v3.3

* tag 'v3.2-rc2': (3068 commits)
  Linux 3.2-rc2
  hfs: add sanity check for file name length
  fsl-rio: fix compile error
  blackfin: Fixup export.h includes
  Blackfin: add serial TX IRQ in individual platform resource
  virtio-pci: fix use after free
  ACPI / cpuidle: Remove acpi_idle_suspend (to fix suspend regression)
  drm/radeon/kms/combios: fix dynamic allocation of PM clock modes
  [CPUFREQ] db8500: fix build error due to undeclared i variable
  bma023: Add SFI translation for this device
  vrtc: change its year offset from 1960 to 1972
  ce4100: fix a build error
  arm/imx: fix imx6q mmc error when mounting rootfs
  arm/imx: fix AUTO_ZRELADDR selection
  arm/imx: fix the references to ARCH_MX3
  ARM: mx51/53: set pwm clock parent to ipg_perclk
  btrfs: rename the option to nospace_cache
  drm/radeon/kms/pm: switch to dynamically allocating clock mode array
  drm/radeon/kms: optimize r600_pm_profile_init
  drm/radeon/kms/pm: add a proper pm profile init function for fusion
  ...

Conflicts:
	drivers/media/radio/Kconfig

1 files changed, 25 insertions, 18 deletions

diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c
index f7802c8bba0a..66a6fd38e9cd 100644
--- a/arch/powerpc/mm/fsl_booke_mmu.c
+++ b/arch/powerpc/mm/fsl_booke_mmu.c
@@ -101,17 +101,17 @@ unsigned long p_mapped_by_tlbcam(phys_addr_t pa)
 
 /*
  * Set up a variable-size TLB entry (tlbcam). The parameters are not checked;
- * in particular size must be a power of 4 between 4k and 256M (or 1G, for cpus
- * that support extended page sizes).  Note that while some cpus support a
- * page size of 4G, we don't allow its use here.
+ * in particular size must be a power of 4 between 4k and the max supported by
+ * an implementation; max may further be limited by what can be represented in
+ * an unsigned long (for example, 32-bit implementations cannot support a 4GB
+ * size).
  */
 static void settlbcam(int index, unsigned long virt, phys_addr_t phys,
 		unsigned long size, unsigned long flags, unsigned int pid)
 {
-	unsigned int tsize, lz;
+	unsigned int tsize;
 
-	asm (PPC_CNTLZL "%0,%1" : "=r" (lz) : "r" (size));
-	tsize = 21 - lz;
+	tsize = __ilog2(size) - 10;
 
 #ifdef CONFIG_SMP
 	if ((flags & _PAGE_NO_CACHE) == 0)
@@ -146,29 +146,36 @@ static void settlbcam(int index, unsigned long virt, phys_addr_t phys,
 	loadcam_entry(index);
 }
 
+unsigned long calc_cam_sz(unsigned long ram, unsigned long virt,
+			  phys_addr_t phys)
+{
+	unsigned int camsize = __ilog2(ram) & ~1U;
+	unsigned int align = __ffs(virt | phys) & ~1U;
+	unsigned long max_cam = (mfspr(SPRN_TLB1CFG) >> 16) & 0xf;
+
+	/* Convert (4^max) kB to (2^max) bytes */
+	max_cam = max_cam * 2 + 10;
+
+	if (camsize > align)
+		camsize = align;
+	if (camsize > max_cam)
+		camsize = max_cam;
+
+	return 1UL << camsize;
+}
+
 unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx)
 {
 	int i;
 	unsigned long virt = PAGE_OFFSET;
 	phys_addr_t phys = memstart_addr;
 	unsigned long amount_mapped = 0;
-	unsigned long max_cam = (mfspr(SPRN_TLB1CFG) >> 16) & 0xf;
-
-	/* Convert (4^max) kB to (2^max) bytes */
-	max_cam = max_cam * 2 + 10;
 
 	/* Calculate CAM values */
 	for (i = 0; ram && i < max_cam_idx; i++) {
-		unsigned int camsize = __ilog2(ram) & ~1U;
-		unsigned int align = __ffs(virt | phys) & ~1U;
 		unsigned long cam_sz;
 
-		if (camsize > align)
-			camsize = align;
-		if (camsize > max_cam)
-			camsize = max_cam;
-
-		cam_sz = 1UL << camsize;
+		cam_sz = calc_cam_sz(ram, virt, phys);
 		settlbcam(i, virt, phys, cam_sz, PAGE_KERNEL_X, 0);
 
 		ram -= cam_sz;