Merge tag 'arc-4.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC architecture updates from Vineet Gupta:
 - Big Endian io accessors fix [Lada]
 - Spellos fixes [Adam]
 - Fix for DW GMAC breakage [Alexey]
 - Making DMA API 64-bit ready
 - Shutting up -Wmaybe-uninitialized noise for ARC
 - Other minor fixes here and there, comments update

* tag 'arc-4.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: (21 commits)
  ARCv2: ioremap: Support dynamic peripheral address space
  ARC: dma: reintroduce platform specific dma<->phys
  ARC: dma: ioremap: use phys_addr_t consistenctly in code paths
  ARC: dma: pass_phys() not sg_virt() to cache ops
  ARC: dma: non-coherent pages need V-P mapping if in HIGHMEM
  ARC: dma: Use struct page based page allocator helpers
  ARC: build: Turn off -Wmaybe-uninitialized for ARC gcc 4.8
  ARC: [plat-axs10x] add Ethernet PHY description in .dts
  arc: use of_platform_default_populate() to populate default bus
  ARC: thp: unbork !CONFIG_TRANSPARENT_HUGEPAGE build
  arc: [plat-nsimosci*] use ezchip network driver
  ARCv2: LLSC: software backoff is NOT needed starting HS2.1c
  ARC: mm: Use virt_to_pfn() for addr >> PAGE_SHIFT pattern
  ARC: [plat-nsim] document ranges
  ARC: build: Better way to detect ISA compatible toolchain
  ARCv2: Allow enabling PAE40 w/o HIGHMEM
  ARC: [BE] readl()/writel() to work in Big Endian CPU configuration
  ARC: [*defconfig] No need to specify CONFIG_CROSS_COMPILE
  ARC: [BE] Select correct CROSS_COMPILE prefix
  ARC: bitops: Remove non relevant comments
  ...

3 files changed, 6 insertions, 21 deletions

diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c
index cdc821df1809..151acf0c9383 100644
--- a/arch/arc/kernel/setup.c
+++ b/arch/arc/kernel/setup.c
@@ -91,11 +91,9 @@ static void read_decode_ccm_bcr(struct cpuinfo_arc *cpu)
 
 static void read_arc_build_cfg_regs(void)
 {
-	struct bcr_perip uncached_space;
 	struct bcr_timer timer;
 	struct bcr_generic bcr;
 	struct cpuinfo_arc *cpu = &cpuinfo_arc700[smp_processor_id()];
-	unsigned long perip_space;
 	FIX_PTR(cpu);
 
 	READ_BCR(AUX_IDENTITY, cpu->core);
@@ -108,14 +106,6 @@ static void read_arc_build_cfg_regs(void)
 
 	cpu->vec_base = read_aux_reg(AUX_INTR_VEC_BASE);
 
-	READ_BCR(ARC_REG_D_UNCACH_BCR, uncached_space);
-        if (uncached_space.ver < 3)
-		perip_space = uncached_space.start << 24;
-	else
-		perip_space = read_aux_reg(AUX_NON_VOL) & 0xF0000000;
-
-	BUG_ON(perip_space != ARC_UNCACHED_ADDR_SPACE);
-
 	READ_BCR(ARC_REG_MUL_BCR, cpu->extn_mpy);
 
 	cpu->extn.norm = read_aux_reg(ARC_REG_NORM_BCR) > 1 ? 1 : 0; /* 2,3 */
@@ -288,8 +278,8 @@ static char *arc_extn_mumbojumbo(int cpu_id, char *buf, int len)
 	FIX_PTR(cpu);
 
 	n += scnprintf(buf + n, len - n,
-		       "Vector Table\t: %#x\nUncached Base\t: %#x\n",
-		       cpu->vec_base, ARC_UNCACHED_ADDR_SPACE);
+		       "Vector Table\t: %#x\nUncached Base\t: %#lx\n",
+		       cpu->vec_base, perip_base);
 
 	if (cpu->extn.fpu_sp || cpu->extn.fpu_dp)
 		n += scnprintf(buf + n, len - n, "FPU\t\t: %s%s\n",
@@ -357,11 +347,6 @@ static void arc_chk_core_config(void)
 		pr_warn("CONFIG_ARC_FPU_SAVE_RESTORE needed for working apps\n");
 	else if (!cpu->extn.fpu_dp && fpu_enabled)
 		panic("FPU non-existent, disable CONFIG_ARC_FPU_SAVE_RESTORE\n");
-
-	if (is_isa_arcv2() && IS_ENABLED(CONFIG_SMP) && cpu->isa.atomic &&
-	    IS_ENABLED(CONFIG_ARC_HAS_LLSC) &&
-	    !IS_ENABLED(CONFIG_ARC_STAR_9000923308))
-		panic("llock/scond livelock workaround missing\n");
 }
 
 /*
@@ -464,7 +449,7 @@ static int __init customize_machine(void)
 	 * Traverses flattened DeviceTree - registering platform devices
 	 * (if any) complete with their resources
 	 */
-	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+	of_platform_default_populate(NULL, NULL, NULL);
 
 	if (machine_desc->init_machine)
 		machine_desc->init_machine();
diff --git a/arch/arc/kernel/stacktrace.c b/arch/arc/kernel/stacktrace.c
index 001de4ce711e..e0efff15a5ae 100644
--- a/arch/arc/kernel/stacktrace.c
+++ b/arch/arc/kernel/stacktrace.c
@@ -232,7 +232,7 @@ void show_stack(struct task_struct *tsk, unsigned long *sp)
 }
 
 /* Another API expected by schedular, shows up in "ps" as Wait Channel
- * Ofcourse just returning schedule( ) would be pointless so unwind until
+ * Of course just returning schedule( ) would be pointless so unwind until
  * the function is not in schedular code
  */
 unsigned int get_wchan(struct task_struct *tsk)
diff --git a/arch/arc/kernel/time.c b/arch/arc/kernel/time.c
index 156d9833ff84..7d9a736fc7e5 100644
--- a/arch/arc/kernel/time.c
+++ b/arch/arc/kernel/time.c
@@ -55,8 +55,8 @@
 #define ARC_REG_TIMER1_CTRL	0x101	/* timer 1 control */
 #define ARC_REG_TIMER1_CNT	0x100	/* timer 1 count */
 
-#define TIMER_CTRL_IE		(1 << 0) /* Interupt when Count reachs limit */
-#define TIMER_CTRL_NH		(1 << 1) /* Count only when CPU NOT halted */
+#define TIMER_CTRL_IE	(1 << 0) /* Interrupt when Count reaches limit */
+#define TIMER_CTRL_NH	(1 << 1) /* Count only when CPU NOT halted */
 
 #define ARC_TIMER_MAX	0xFFFFFFFF