Merge branch 'fix/soundcore' into for-linus

[pandora-kernel.git] / arch / alpha / kernel / sys_rawhide.c

diff --git a/arch/alpha/kernel/sys_rawhide.c b/arch/alpha/kernel/sys_rawhide.c
index 581d08c..f3aec7e 100644 (file)
--- a/arch/alpha/kernel/sys_rawhide.c
+++ b/arch/alpha/kernel/sys_rawhide.c
@@ -52,6 +52,9 @@ rawhide_update_irq_hw(int hose, int mask)
        *(vuip)MCPCIA_INT_MASK0(MCPCIA_HOSE2MID(hose));
 }
 
+#define hose_exists(h) \
+  (((h) < MCPCIA_MAX_HOSES) && (cached_irq_masks[(h)] != 0))
+
 static inline void 
 rawhide_enable_irq(unsigned int irq)
 {
@@ -59,6 +62,9 @@ rawhide_enable_irq(unsigned int irq)
 
        irq -= 16;
        hose = irq / 24;
+       if (!hose_exists(hose)) /* if hose non-existent, exit */
+               return;
+
        irq -= hose * 24;
        mask = 1 << irq;
 
@@ -76,6 +82,9 @@ rawhide_disable_irq(unsigned int irq)
 
        irq -= 16;
        hose = irq / 24;
+       if (!hose_exists(hose)) /* if hose non-existent, exit */
+               return;
+
        irq -= hose * 24;
        mask = ~(1 << irq) | hose_irq_masks[hose];
 
@@ -93,6 +102,9 @@ rawhide_mask_and_ack_irq(unsigned int irq)
 
        irq -= 16;
        hose = irq / 24;
+       if (!hose_exists(hose)) /* if hose non-existent, exit */
+               return;
+
        irq -= hose * 24;
        mask1 = 1 << irq;
        mask = ~mask1 | hose_irq_masks[hose];
@@ -123,7 +135,7 @@ rawhide_end_irq(unsigned int irq)
                rawhide_enable_irq(irq);
 }
 
-static struct hw_interrupt_type rawhide_irq_type = {
+static struct irq_chip rawhide_irq_type = {
        .typename       = "RAWHIDE",
        .startup        = rawhide_startup_irq,
        .shutdown       = rawhide_disable_irq,
@@ -169,6 +181,9 @@ rawhide_init_irq(void)
 
        mcpcia_init_hoses();
 
+       /* Clear them all; only hoses that exist will be non-zero. */
+       for (i = 0; i < MCPCIA_MAX_HOSES; i++) cached_irq_masks[i] = 0;
+
        for (hose = hose_head; hose; hose = hose->next) {
                unsigned int h = hose->index;
                unsigned int mask = hose_irq_masks[h];