genirq: Convert irq_desc.lock to raw_spinlock

Convert locks which cannot be sleeping locks in preempt-rt to
raw_spinlocks.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Ingo Molnar <mingo@elte.hu>

7 files changed, 22 insertions, 22 deletions

diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index f6dca4f4b295..9040330b0530 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -210,7 +210,7 @@ int show_interrupts(struct seq_file *p, void *v)
         if (!desc)
                 return 0;
 
-        spin_lock_irqsave(&desc->lock, flags);
+        raw_spin_lock_irqsave(&desc->lock, flags);
 
         action = desc->action;
         if (!action || !action->handler)
@@ -237,7 +237,7 @@ int show_interrupts(struct seq_file *p, void *v)
         seq_putc(p, '\n');
 
 skip:
-        spin_unlock_irqrestore(&desc->lock, flags);
+        raw_spin_unlock_irqrestore(&desc->lock, flags);
 
         return 0;
 }
@@ -1112,7 +1112,7 @@ static int virq_debug_show(struct seq_file *m, void *private)
                 if (!desc)
                         continue;
 
-                spin_lock_irqsave(&desc->lock, flags);
+                raw_spin_lock_irqsave(&desc->lock, flags);
 
                 if (desc->action && desc->action->handler) {
                         seq_printf(m, "%5d  ", i);
@@ -1131,7 +1131,7 @@ static int virq_debug_show(struct seq_file *m, void *private)
                         seq_printf(m, "%s\n", p);
                 }
 
-                spin_unlock_irqrestore(&desc->lock, flags);
+                raw_spin_unlock_irqrestore(&desc->lock, flags);
         }
 
         return 0;
diff --git a/arch/powerpc/platforms/52xx/media5200.c b/arch/powerpc/platforms/52xx/media5200.c
index cc0c854291d7..0bac3a3dbecf 100644
--- a/arch/powerpc/platforms/52xx/media5200.c
+++ b/arch/powerpc/platforms/52xx/media5200.c
@@ -86,9 +86,9 @@ void media5200_irq_cascade(unsigned int virq, struct irq_desc *desc)
         u32 status, enable;
 
         /* Mask off the cascaded IRQ */
-        spin_lock(&desc->lock);
+        raw_spin_lock(&desc->lock);
         desc->chip->mask(virq);
-        spin_unlock(&desc->lock);
+        raw_spin_unlock(&desc->lock);
 
         /* Ask the FPGA for IRQ status.  If 'val' is 0, then no irqs
          * are pending.  'ffs()' is 1 based */
@@ -104,11 +104,11 @@ void media5200_irq_cascade(unsigned int virq, struct irq_desc *desc)
         }
 
         /* Processing done; can reenable the cascade now */
-        spin_lock(&desc->lock);
+        raw_spin_lock(&desc->lock);
         desc->chip->ack(virq);
         if (!(desc->status & IRQ_DISABLED))
                 desc->chip->unmask(virq);
-        spin_unlock(&desc->lock);
+        raw_spin_unlock(&desc->lock);
 }
 
 static int media5200_irq_map(struct irq_host *h, unsigned int virq,
diff --git a/arch/powerpc/platforms/cell/interrupt.c b/arch/powerpc/platforms/cell/interrupt.c
index 7267effc8078..6829cf7e2bda 100644
--- a/arch/powerpc/platforms/cell/interrupt.c
+++ b/arch/powerpc/platforms/cell/interrupt.c
@@ -237,7 +237,7 @@ extern int noirqdebug;
 
 static void handle_iic_irq(unsigned int irq, struct irq_desc *desc)
 {
-        spin_lock(&desc->lock);
+        raw_spin_lock(&desc->lock);
 
         desc->status &= ~(IRQ_REPLAY | IRQ_WAITING);
 
@@ -265,18 +265,18 @@ static void handle_iic_irq(unsigned int irq, struct irq_desc *desc)
                         goto out_eoi;
 
                 desc->status &= ~IRQ_PENDING;
-                spin_unlock(&desc->lock);
+                raw_spin_unlock(&desc->lock);
                 action_ret = handle_IRQ_event(irq, action);
                 if (!noirqdebug)
                         note_interrupt(irq, desc, action_ret);
-                spin_lock(&desc->lock);
+                raw_spin_lock(&desc->lock);
 
         } while ((desc->status & (IRQ_PENDING | IRQ_DISABLED)) == IRQ_PENDING);
 
         desc->status &= ~IRQ_INPROGRESS;
 out_eoi:
         desc->chip->eoi(irq);
-        spin_unlock(&desc->lock);
+        raw_spin_unlock(&desc->lock);
 }
 
 static int iic_host_map(struct irq_host *h, unsigned int virq,
diff --git a/arch/powerpc/platforms/iseries/irq.c b/arch/powerpc/platforms/iseries/irq.c
index 07762259c60a..86c4b29eea89 100644
--- a/arch/powerpc/platforms/iseries/irq.c
+++ b/arch/powerpc/platforms/iseries/irq.c
@@ -217,9 +217,9 @@ void __init iSeries_activate_IRQs()
                 struct irq_desc *desc = irq_to_desc(irq);
 
                 if (desc && desc->chip && desc->chip->startup) {
-                        spin_lock_irqsave(&desc->lock, flags);
+                        raw_spin_lock_irqsave(&desc->lock, flags);
                         desc->chip->startup(irq);
-                        spin_unlock_irqrestore(&desc->lock, flags);
+                        raw_spin_unlock_irqrestore(&desc->lock, flags);
                 }
         }
 }
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index 7d01b58f3989..b9b9e11609ec 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -906,7 +906,7 @@ void xics_migrate_irqs_away(void)
                     || desc->chip->set_affinity == NULL)
                         continue;
 
-                spin_lock_irqsave(&desc->lock, flags);
+                raw_spin_lock_irqsave(&desc->lock, flags);
 
                 status = rtas_call(ibm_get_xive, 1, 3, xics_status, irq);
                 if (status) {
@@ -930,7 +930,7 @@ void xics_migrate_irqs_away(void)
                 cpumask_setall(irq_to_desc(virq)->affinity);
                 desc->chip->set_affinity(virq, cpu_all_mask);
 unlock:
-                spin_unlock_irqrestore(&desc->lock, flags);
+                raw_spin_unlock_irqrestore(&desc->lock, flags);
         }
 }
 #endif
diff --git a/arch/powerpc/sysdev/fsl_msi.c b/arch/powerpc/sysdev/fsl_msi.c
index 62e50258cdef..c6e11b077108 100644
--- a/arch/powerpc/sysdev/fsl_msi.c
+++ b/arch/powerpc/sysdev/fsl_msi.c
@@ -173,7 +173,7 @@ static void fsl_msi_cascade(unsigned int irq, struct irq_desc *desc)
         u32 intr_index;
         u32 have_shift = 0;
 
-        spin_lock(&desc->lock);
+        raw_spin_lock(&desc->lock);
         if ((msi_data->feature &  FSL_PIC_IP_MASK) == FSL_PIC_IP_IPIC) {
                 if (desc->chip->mask_ack)
                         desc->chip->mask_ack(irq);
@@ -225,7 +225,7 @@ static void fsl_msi_cascade(unsigned int irq, struct irq_desc *desc)
                 break;
         }
 unlock:
-        spin_unlock(&desc->lock);
+        raw_spin_unlock(&desc->lock);
 }
 
 static int __devinit fsl_of_msi_probe(struct of_device *dev,
diff --git a/arch/powerpc/sysdev/uic.c b/arch/powerpc/sysdev/uic.c
index 7d10074b3304..6f220a913e42 100644
--- a/arch/powerpc/sysdev/uic.c
+++ b/arch/powerpc/sysdev/uic.c
@@ -225,12 +225,12 @@ void uic_irq_cascade(unsigned int virq, struct irq_desc *desc)
         int src;
         int subvirq;
 
-        spin_lock(&desc->lock);
+        raw_spin_lock(&desc->lock);
         if (desc->status & IRQ_LEVEL)
                 desc->chip->mask(virq);
         else
                 desc->chip->mask_ack(virq);
-        spin_unlock(&desc->lock);
+        raw_spin_unlock(&desc->lock);
 
         msr = mfdcr(uic->dcrbase + UIC_MSR);
         if (!msr) /* spurious interrupt */
@@ -242,12 +242,12 @@ void uic_irq_cascade(unsigned int virq, struct irq_desc *desc)
         generic_handle_irq(subvirq);
 
 uic_irq_ret:
-        spin_lock(&desc->lock);
+        raw_spin_lock(&desc->lock);
         if (desc->status & IRQ_LEVEL)
                 desc->chip->ack(virq);
         if (!(desc->status & IRQ_DISABLED) && desc->chip->unmask)
                 desc->chip->unmask(virq);
-        spin_unlock(&desc->lock);
+        raw_spin_unlock(&desc->lock);
 }
 
 static struct uic * __init uic_init_one(struct device_node *node)