MIPS: Sibyte: Fix locking in set_irq_affinity

Locking of irq_desc is now done in irq_set_affinity; don't lock it again
in chip specific set_affinity function.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

2 files changed, 4 insertions, 10 deletions

diff --git a/arch/mips/sibyte/bcm1480/irq.c b/arch/mips/sibyte/bcm1480/irq.c
index 352352b3cb2f..c147c4b35d3f 100644
--- a/arch/mips/sibyte/bcm1480/irq.c
+++ b/arch/mips/sibyte/bcm1480/irq.c
@@ -113,7 +113,6 @@ static void bcm1480_set_affinity(unsigned int irq, const struct cpumask *mask)
 {
         int i = 0, old_cpu, cpu, int_on, k;
         u64 cur_ints;
-        struct irq_desc *desc = irq_desc + irq;
         unsigned long flags;
         unsigned int irq_dirty;
 
@@ -127,8 +126,7 @@ static void bcm1480_set_affinity(unsigned int irq, const struct cpumask *mask)
         cpu = cpu_logical_map(i);
 
         /* Protect against other affinity changers and IMR manipulation */
-        spin_lock_irqsave(&desc->lock, flags);
-        spin_lock(&bcm1480_imr_lock);
+        spin_lock_irqsave(&bcm1480_imr_lock, flags);
 
         /* Swizzle each CPU's IMR (but leave the IP selection alone) */
         old_cpu = bcm1480_irq_owner[irq];
@@ -153,8 +151,7 @@ static void bcm1480_set_affinity(unsigned int irq, const struct cpumask *mask)
                         ____raw_writeq(cur_ints, IOADDR(A_BCM1480_IMR_MAPPER(cpu) + R_BCM1480_IMR_INTERRUPT_MASK_H + (k*BCM1480_IMR_HL_SPACING)));
                 }
         }
-        spin_unlock(&bcm1480_imr_lock);
-        spin_unlock_irqrestore(&desc->lock, flags);
+        spin_unlock_irqrestore(&bcm1480_imr_lock, flags);
 }
 #endif
 
diff --git a/arch/mips/sibyte/sb1250/irq.c b/arch/mips/sibyte/sb1250/irq.c
index c08ff582da6f..38cb998ade22 100644
--- a/arch/mips/sibyte/sb1250/irq.c
+++ b/arch/mips/sibyte/sb1250/irq.c
@@ -107,7 +107,6 @@ static void sb1250_set_affinity(unsigned int irq, const struct cpumask *mask)
 {
         int i = 0, old_cpu, cpu, int_on;
         u64 cur_ints;
-        struct irq_desc *desc = irq_desc + irq;
         unsigned long flags;
 
         i = cpumask_first(mask);
@@ -121,8 +120,7 @@ static void sb1250_set_affinity(unsigned int irq, const struct cpumask *mask)
         cpu = cpu_logical_map(i);
 
         /* Protect against other affinity changers and IMR manipulation */
-        spin_lock_irqsave(&desc->lock, flags);
-        spin_lock(&sb1250_imr_lock);
+        spin_lock_irqsave(&sb1250_imr_lock, flags);
 
         /* Swizzle each CPU's IMR (but leave the IP selection alone) */
         old_cpu = sb1250_irq_owner[irq];
@@ -144,8 +142,7 @@ static void sb1250_set_affinity(unsigned int irq, const struct cpumask *mask)
                 ____raw_writeq(cur_ints, IOADDR(A_IMR_MAPPER(cpu) +
                                         R_IMR_INTERRUPT_MASK));
         }
-        spin_unlock(&sb1250_imr_lock);
-        spin_unlock_irqrestore(&desc->lock, flags);
+        spin_unlock_irqrestore(&sb1250_imr_lock, flags);
 }
 #endif