Merge tag 'omap-for-v3.13/quirk-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/dt

From Tony Lindgren:
Changes needed to prepare for making omap3 device tree only:

- Always build in board-generic, and add pdata quirks and auxdata
  support for it so we have all the pdata related quirks
  in the same place.

- Merge of the drivers/pinctrl changes that are needed for PM
  to continue working on omap3 and also needed for other omaps
  eventually. The three pinctrl related patches have been acked
  by Linus Walleij and are pulled into both the pinctrl tree
  and this branch.

- Few defconfig related changes for drivers needed.

* tag 'omap-for-v3.13/quirk-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (523 commits)
  ARM: configs: omap2plus_defconfig: enable dwc3 and dependencies
  ARM: OMAP2+: Add WLAN modules and of_serial to omap2plus_defconfig
  ARM: OMAP2+: Run make savedefconfig on omap2plus_defconfig to shrink it
  ARM: OMAP2+: Add minimal 8250 support for GPMC
  ARM: OMAP2+: Use pdata quirks for wl12xx for omap3 evm and zoom3
  ARM: OMAP: Move DT wake-up event handling over to use pinctrl-single-omap
  ARM: OMAP2+: Add support for auxdata
  pinctrl: single: Add support for auxdata
  pinctrl: single: Add support for wake-up interrupts
  pinctrl: single: Prepare for supporting SoC specific features
  ARM: OMAP2+: igep0020: use display init from dss-common
  ARM: OMAP2+: pdata-quirks: add legacy display init for IGEPv2 board
  +Linux 3.12-rc4

Signed-off-by: Kevin Hilman <khilman@linaro.org>

3 files changed, 23 insertions, 7 deletions

diff --git a/lib/hexdump.c b/lib/hexdump.c
index 3f0494c9d57a..8499c810909a 100644
--- a/lib/hexdump.c
+++ b/lib/hexdump.c
@@ -14,6 +14,8 @@
 
 const char hex_asc[] = "0123456789abcdef";
 EXPORT_SYMBOL(hex_asc);
+const char hex_asc_upper[] = "0123456789ABCDEF";
+EXPORT_SYMBOL(hex_asc_upper);
 
 /**
  * hex_to_bin - convert a hex digit to its real value
diff --git a/lib/kobject.c b/lib/kobject.c
index 962175134702..669bf190d4fb 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -933,10 +933,7 @@ const struct kobj_ns_type_operations *kobj_ns_ops(struct kobject *kobj)
 
 bool kobj_ns_current_may_mount(enum kobj_ns_type type)
 {
-        bool may_mount = false;
-
-        if (type == KOBJ_NS_TYPE_NONE)
-                return true;
+        bool may_mount = true;
 
         spin_lock(&kobj_ns_type_lock);
         if ((type > KOBJ_NS_TYPE_NONE) && (type < KOBJ_NS_TYPES) &&
diff --git a/lib/lockref.c b/lib/lockref.c
index 677d036cf3c7..6f9d434c1521 100644
--- a/lib/lockref.c
+++ b/lib/lockref.c
@@ -4,6 +4,22 @@
 #ifdef CONFIG_CMPXCHG_LOCKREF
 
 /*
+ * Allow weakly-ordered memory architectures to provide barrier-less
+ * cmpxchg semantics for lockref updates.
+ */
+#ifndef cmpxchg64_relaxed
+# define cmpxchg64_relaxed cmpxchg64
+#endif
+
+/*
+ * Allow architectures to override the default cpu_relax() within CMPXCHG_LOOP.
+ * This is useful for architectures with an expensive cpu_relax().
+ */
+#ifndef arch_mutex_cpu_relax
+# define arch_mutex_cpu_relax() cpu_relax()
+#endif
+
+/*
  * Note that the "cmpxchg()" reloads the "old" value for the
  * failure case.
  */
@@ -14,12 +30,13 @@
         while (likely(arch_spin_value_unlocked(old.lock.rlock.raw_lock))) {     \
                 struct lockref new = old, prev = old;                           \
                 CODE                                                            \
-                old.lock_count = cmpxchg64(&lockref->lock_count,                \
-                                           old.lock_count, new.lock_count);     \
+                old.lock_count = cmpxchg64_relaxed(&lockref->lock_count,        \
+                                                   old.lock_count,              \
+                                                   new.lock_count);             \
                 if (likely(old.lock_count == prev.lock_count)) {                \
                         SUCCESS;                                                \
                 }                                                               \
-                cpu_relax();                                                    \
+                arch_mutex_cpu_relax();                                         \
         }                                                                       \
 } while (0)