[PATCH] FRV: Fix {dis,en}able_irq_lockdep_irqrestore compile error

David Howells
2006-09-05T15:22:56Z

Fix the lack of certain non-LOCKDEP stub functions in linux/interrupt.h and
also provide FRV with LOCKDEP variants.

This is to be applied to -mm kernel since not all of the functions added exist
in the main kernel.

Signed-Off-By: David Howells <dhowells@redhat.com>
---
warthog>diffstat -p1 frv-irq-lockdep-2618rc5mm1.diff
include/asm-frv/irq.h | 43 +++++++++++++++++++++++++++++++++++++++++++
include/linux/interrupt.h | 2 ++
2 files changed, 45 insertions(+)

diff -urp ../kernels/linux-2.6.18-rc5-mm1/include/asm-frv/irq.h linux-2.6.18-rc5-mm1-frv/include/asm-frv/irq.h
--- ../kernels/linux-2.6.18-rc5-mm1/include/asm-frv/irq.h 2006-09-04 18:02:48.000000000 +0100
+++ linux-2.6.18-rc5-mm1-frv/include/asm-frv/irq.h 2006-09-05 15:59:08.000000000 +0100
@@ -39,5 +39,48 @@ extern void disable_irq_nosync(unsigned
extern void disable_irq(unsigned int irq);
extern void enable_irq(unsigned int irq);

+#ifdef CONFIG_LOCKDEP
+/*
+ * Special lockdep variants of irq disabling/enabling.
+ * These should be used for locking constructs that
+ * know that a particular irq context which is disabled,
+ * and which is the only irq-context user of a lock,
+ * that it's safe to take the lock in the irq-disabled
+ * section without disabling hardirqs.
+ *
+ * On !CONFIG_LOCKDEP they are equivalent to the normal
+ * irq disable/enable methods.
+ */
+static inline void disable_irq_nosync_lockdep(unsigned int irq)
+{
+ disable_irq_nosync(irq);
+ local_irq_disable();
+}
+
+static inline void disable_irq_nosync_lockdep_irqsave(unsigned int irq, unsigned long *flags)
+{
+ disable_irq_nosync(irq);
+ local_irq_save(*flags);
+}
+
+static inline void disable_irq_lockdep(unsigned int irq)
+{
+ disable_irq(irq);
+ local_irq_disable();
+}
+
+static inline void enable_irq_lockdep(unsigned int irq)
+{
+ local_irq_enable();
+ enable_irq(irq);
+}
+
+static inline void enable_irq_lockdep_irqrestore(unsigned int irq, unsigned long *flags)
+{
+ local_irq_restore(*flags);
+ enable_irq(irq);
+}
+#endif /* CONFIG_LOCKDEP */
+

#endif /* _ASM_IRQ_H_ */
diff -urp ../kernels/linux-2.6.18-rc5-mm1/include/linux/interrupt.h linux-2.6.18-rc5-mm1-frv/include/linux/interrupt.h
--- ../kernels/linux-2.6.18-rc5-mm1/include/linux/interrupt.h 2006-09-04 18:03:31.000000000 +0100
+++ linux-2.6.18-rc5-mm1-frv/include/linux/interrupt.h 2006-09-05 15:58:53.000000000 +0100
@@ -178,6 +178,8 @@ static inline int disable_irq_wake(unsig
# define disable_irq_nosync_lockdep(irq) disable_irq_nosync(irq)
# define disable_irq_lockdep(irq) disable_irq(irq)
# define enable_irq_lockdep(irq) enable_irq(irq)
+# define disable_irq_nosync_lockdep_irqsave(irq, flags) disable_irq_nosync(irq)
+# define enable_irq_lockdep_irqrestore(irq, flags) enable_irq(irq)
# endif

#endif /* CONFIG_GENERIC_HARDIRQS */