irq: name 'p' variables a bit better

'p' stands for pointer - make it clear in setup_irq() and free_irq()
what kind of pointer it is.

Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 11 insertions, 11 deletions

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index de5a765e88ab..c589305210d7 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -399,7 +399,7 @@ int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
 static int
 __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
 {
-        struct irqaction *old, **p;
+        struct irqaction *old, **old_ptr;
         const char *old_name = NULL;
         unsigned long flags;
         int shared = 0;
@@ -431,8 +431,8 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
          * The following block of code has to be executed atomically
          */
         spin_lock_irqsave(&desc->lock, flags);
-        p = &desc->action;
-        old = *p;
+        old_ptr = &desc->action;
+        old = *old_ptr;
         if (old) {
                 /*
                  * Can't share interrupts unless both agree to and are
@@ -455,8 +455,8 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
 
                 /* add new interrupt at end of irq queue */
                 do {
-                        p = &old->next;
-                        old = *p;
+                        old_ptr = &old->next;
+                        old = *old_ptr;
                 } while (old);
                 shared = 1;
         }
@@ -507,7 +507,7 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
                                 (int)(new->flags & IRQF_TRIGGER_MASK));
         }
 
-        *p = new;
+        *old_ptr = new;
 
         /* Reset broken irq detection when installing new handler */
         desc->irq_count = 0;
@@ -575,7 +575,7 @@ int setup_irq(unsigned int irq, struct irqaction *act)
 void free_irq(unsigned int irq, void *dev_id)
 {
         struct irq_desc *desc = irq_to_desc(irq);
-        struct irqaction *action, **p;
+        struct irqaction *action, **action_ptr;
         unsigned long flags;
 
         WARN(in_interrupt(), "Trying to free IRQ %d from IRQ context!\n", irq);
@@ -589,9 +589,9 @@ void free_irq(unsigned int irq, void *dev_id)
          * There can be multiple actions per IRQ descriptor, find the right
          * one based on the dev_id:
          */
-        p = &desc->action;
+        action_ptr = &desc->action;
         for (;;) {
-                action = *p;
+                action = *action_ptr;
 
                 if (!action) {
                         WARN(1, "Trying to free already-free IRQ %d\n", irq);
@@ -602,11 +602,11 @@ void free_irq(unsigned int irq, void *dev_id)
 
                 if (action->dev_id == dev_id)
                         break;
-                p = &action->next;
+                action_ptr = &action->next;
         }
 
         /* Found it - now remove it from the list of entries: */
-        *p = action->next;
+        *action_ptr = action->next;
 
         /* Currently used only by UML, might disappear one day: */
 #ifdef CONFIG_IRQ_RELEASE_METHOD