diff options
Diffstat (limited to 'arch/sparc/prom/p1275.c')
| -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; } |