diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-04 08:24:47 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-04 08:24:47 -0800 |
| commit | 6895210e89df20520916c94a4dc148a43229053e (patch) | |
| tree | 60b137cccd4a57bb98bbfed55a42859e4b60c8db /arch/sparc/prom | |
| parent | 4c10c937cc2eb197db565392db91d429eec71176 (diff) | |
| parent | 8a4fd1e4922413cfdfa6c51a59efb720d904a5eb (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc64: Make prom entry spinlock NMI safe.
sparc64: Kill off old sys_perfctr system call and state.
sparc: Update defconfigs.
sparc: Provide io{read,write}{16,32}be().
Diffstat (limited to 'arch/sparc/prom')
| -rw-r--r-- | arch/sparc/prom/p1275.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/arch/sparc/prom/p1275.c b/arch/sparc/prom/p1275.c index 4b7c937bba6..2d8b70d397f 100644 --- a/arch/sparc/prom/p1275.c +++ b/arch/sparc/prom/p1275.c @@ -32,10 +32,9 @@ extern void prom_cif_interface(void); extern void prom_cif_callback(void); /* - * This provides SMP safety on the p1275buf. prom_callback() drops this lock - * to allow recursuve acquisition. + * This provides SMP safety on the p1275buf. */ -DEFINE_SPINLOCK(prom_entry_lock); +DEFINE_RAW_SPINLOCK(prom_entry_lock); long p1275_cmd(const char *service, long fmt, ...) { @@ -47,7 +46,9 @@ long p1275_cmd(const char *service, long fmt, ...) p = p1275buf.prom_buffer; - spin_lock_irqsave(&prom_entry_lock, flags); + raw_local_save_flags(flags); + raw_local_irq_restore(PIL_NMI); + raw_spin_lock(&prom_entry_lock); p1275buf.prom_args[0] = (unsigned long)p; /* service */ strcpy (p, service); @@ -139,7 +140,8 @@ long p1275_cmd(const char *service, long fmt, ...) va_end(list); x = p1275buf.prom_args [nargs + 3]; - spin_unlock_irqrestore(&prom_entry_lock, flags); + raw_spin_unlock(&prom_entry_lock); + raw_local_irq_restore(flags); return x; } |