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-rw-r--r--arch/sparc/prom/p1275.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/arch/sparc/prom/p1275.c b/arch/sparc/prom/p1275.c
index 4b7c937bba61..2d8b70d397f1 100644
--- a/arch/sparc/prom/p1275.c
+++ b/arch/sparc/prom/p1275.c
@@ -32,10 +32,9 @@ extern void prom_cif_interface(void);
32extern void prom_cif_callback(void); 32extern void prom_cif_callback(void);
33 33
34/* 34/*
35 * This provides SMP safety on the p1275buf. prom_callback() drops this lock 35 * This provides SMP safety on the p1275buf.
36 * to allow recursuve acquisition.
37 */ 36 */
38DEFINE_SPINLOCK(prom_entry_lock); 37DEFINE_RAW_SPINLOCK(prom_entry_lock);
39 38
40long p1275_cmd(const char *service, long fmt, ...) 39long p1275_cmd(const char *service, long fmt, ...)
41{ 40{
@@ -47,7 +46,9 @@ long p1275_cmd(const char *service, long fmt, ...)
47 46
48 p = p1275buf.prom_buffer; 47 p = p1275buf.prom_buffer;
49 48
50 spin_lock_irqsave(&prom_entry_lock, flags); 49 raw_local_save_flags(flags);
50 raw_local_irq_restore(PIL_NMI);
51 raw_spin_lock(&prom_entry_lock);
51 52
52 p1275buf.prom_args[0] = (unsigned long)p; /* service */ 53 p1275buf.prom_args[0] = (unsigned long)p; /* service */
53 strcpy (p, service); 54 strcpy (p, service);
@@ -139,7 +140,8 @@ long p1275_cmd(const char *service, long fmt, ...)
139 va_end(list); 140 va_end(list);
140 x = p1275buf.prom_args [nargs + 3]; 141 x = p1275buf.prom_args [nargs + 3];
141 142
142 spin_unlock_irqrestore(&prom_entry_lock, flags); 143 raw_spin_unlock(&prom_entry_lock);
144 raw_local_irq_restore(flags);
143 145
144 return x; 146 return x;
145} 147}