Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

Pull MIPS fixes from Ralf Baechle:
 "Another set of five fixes.  The most interesting one is a fix for race
  condition in the local_irq_disable() implementation used by .S code
  for pre-MIPS R2 processors only.  It leaves a race that's hard but not
  impossible to hit; the others fairly obvious"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: Make local_irq_disable macro safe for non-Mipsr2
  MIPS: Octeon: Fix warning in of_device_alloc on cn3xxx
  MIPS: ftrace: Tweak safe_load()/safe_store() macros
  MIPS: BCM47XX: Check all (32) GPIOs when looking for a pin
  MIPS: Fix possible build error with transparent hugepages enabled

5 files changed, 40 insertions, 27 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 153447452d5e..95fa1f1d5c8b 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1776,12 +1776,12 @@ endchoice
 
 config FORCE_MAX_ZONEORDER
         int "Maximum zone order"
-        range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
-        default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
-        range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
-        default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
-        range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
-        default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
+        range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
+        default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
+        range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
+        default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
+        range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
+        default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
         range 11 64
         default "11"
         help
diff --git a/arch/mips/bcm47xx/nvram.c b/arch/mips/bcm47xx/nvram.c
index 6decb27cf48b..2bed73a684ae 100644
--- a/arch/mips/bcm47xx/nvram.c
+++ b/arch/mips/bcm47xx/nvram.c
@@ -196,7 +196,7 @@ int bcm47xx_nvram_gpio_pin(const char *name)
         char nvram_var[10];
         char buf[30];
 
-        for (i = 0; i < 16; i++) {
+        for (i = 0; i < 32; i++) {
                 err = snprintf(nvram_var, sizeof(nvram_var), "gpio%i", i);
                 if (err <= 0)
                         continue;
diff --git a/arch/mips/cavium-octeon/octeon-irq.c b/arch/mips/cavium-octeon/octeon-irq.c
index 25fbfae06c1f..c2bb4f896ce7 100644
--- a/arch/mips/cavium-octeon/octeon-irq.c
+++ b/arch/mips/cavium-octeon/octeon-irq.c
@@ -975,10 +975,6 @@ static int octeon_irq_ciu_xlat(struct irq_domain *d,
         if (ciu > 1 || bit > 63)
                 return -EINVAL;
 
-        /* These are the GPIO lines */
-        if (ciu == 0 && bit >= 16 && bit < 32)
-                return -EINVAL;
-
         *out_hwirq = (ciu << 6) | bit;
         *out_type = 0;
 
@@ -1007,6 +1003,10 @@ static int octeon_irq_ciu_map(struct irq_domain *d,
         if (!octeon_irq_virq_in_range(virq))
                 return -EINVAL;
 
+        /* Don't map irq if it is reserved for GPIO. */
+        if (line == 0 && bit >= 16 && bit <32)
+                return 0;
+
         if (line > 1 || octeon_irq_ciu_to_irq[line][bit] != 0)
                 return -EINVAL;
 
@@ -1525,10 +1525,6 @@ static int octeon_irq_ciu2_xlat(struct irq_domain *d,
         ciu = intspec[0];
         bit = intspec[1];
 
-        /* Line 7  are the GPIO lines */
-        if (ciu > 6 || bit > 63)
-                return -EINVAL;
-
         *out_hwirq = (ciu << 6) | bit;
         *out_type = 0;
 
@@ -1570,8 +1566,14 @@ static int octeon_irq_ciu2_map(struct irq_domain *d,
         if (!octeon_irq_virq_in_range(virq))
                 return -EINVAL;
 
-        /* Line 7  are the GPIO lines */
-        if (line > 6 || octeon_irq_ciu_to_irq[line][bit] != 0)
+        /*
+         * Don't map irq if it is reserved for GPIO.
+         * (Line 7 are the GPIO lines.)
+         */
+        if (line == 7)
+                return 0;
+
+        if (line > 7 || octeon_irq_ciu_to_irq[line][bit] != 0)
                 return -EINVAL;
 
         if (octeon_irq_ciu2_is_edge(line, bit))
diff --git a/arch/mips/include/asm/asmmacro.h b/arch/mips/include/asm/asmmacro.h
index 69a9a22d014a..4225e99bd7bf 100644
--- a/arch/mips/include/asm/asmmacro.h
+++ b/arch/mips/include/asm/asmmacro.h
@@ -9,6 +9,7 @@
 #define _ASM_ASMMACRO_H
 
 #include <asm/hazards.h>
+#include <asm/asm-offsets.h>
 
 #ifdef CONFIG_32BIT
 #include <asm/asmmacro-32.h>
@@ -54,11 +55,21 @@
         .endm
 
         .macro  local_irq_disable reg=t0
+#ifdef CONFIG_PREEMPT
+        lw      \reg, TI_PRE_COUNT($28)
+        addi    \reg, \reg, 1
+        sw      \reg, TI_PRE_COUNT($28)
+#endif
         mfc0    \reg, CP0_STATUS
         ori     \reg, \reg, 1
         xori    \reg, \reg, 1
         mtc0    \reg, CP0_STATUS
         irq_disable_hazard
+#ifdef CONFIG_PREEMPT
+        lw      \reg, TI_PRE_COUNT($28)
+        addi    \reg, \reg, -1
+        sw      \reg, TI_PRE_COUNT($28)
+#endif
         .endm
 #endif /* CONFIG_MIPS_MT_SMTC */
 
diff --git a/arch/mips/include/asm/ftrace.h b/arch/mips/include/asm/ftrace.h
index ce35c9af0c28..992aaba603b5 100644
--- a/arch/mips/include/asm/ftrace.h
+++ b/arch/mips/include/asm/ftrace.h
@@ -22,12 +22,12 @@ extern void _mcount(void);
 #define safe_load(load, src, dst, error)                \
 do {                                                    \
         asm volatile (                                  \
-                "1: " load " %[" STR(dst) "], 0(%[" STR(src) "])\n"\
-                "   li %[" STR(error) "], 0\n"          \
+                "1: " load " %[tmp_dst], 0(%[tmp_src])\n"       \
+                "   li %[tmp_err], 0\n"                 \
                 "2:\n"                                  \
                                                         \
                 ".section .fixup, \"ax\"\n"             \
-                "3: li %[" STR(error) "], 1\n"          \
+                "3: li %[tmp_err], 1\n"                 \
                 "   j 2b\n"                             \
                 ".previous\n"                           \
                                                         \
@@ -35,8 +35,8 @@ do {							\
                 STR(PTR) "\t1b, 3b\n\t"                 \
                 ".previous\n"                           \
                                                         \
-                : [dst] "=&r" (dst), [error] "=r" (error)\
-                : [src] "r" (src)                       \
+                : [tmp_dst] "=&r" (dst), [tmp_err] "=r" (error)\
+                : [tmp_src] "r" (src)                   \
                 : "memory"                              \
         );                                              \
 } while (0)
@@ -44,12 +44,12 @@ do {							\
 #define safe_store(store, src, dst, error)      \
 do {                                            \
         asm volatile (                          \
-                "1: " store " %[" STR(src) "], 0(%[" STR(dst) "])\n"\
-                "   li %[" STR(error) "], 0\n"  \
+                "1: " store " %[tmp_src], 0(%[tmp_dst])\n"\
+                "   li %[tmp_err], 0\n"         \
                 "2:\n"                          \
                                                 \
                 ".section .fixup, \"ax\"\n"     \
-                "3: li %[" STR(error) "], 1\n"  \
+                "3: li %[tmp_err], 1\n"         \
                 "   j 2b\n"                     \
                 ".previous\n"                   \
                                                 \
@@ -57,8 +57,8 @@ do {						\
                 STR(PTR) "\t1b, 3b\n\t"         \
                 ".previous\n"                   \
                                                 \
-                : [error] "=r" (error)          \
-                : [dst] "r" (dst), [src] "r" (src)\
+                : [tmp_err] "=r" (error)        \
+                : [tmp_dst] "r" (dst), [tmp_src] "r" (src)\
                 : "memory"                      \
         );                                      \
 } while (0)