powerpc: Remove get_irq_desc()

get_irq_desc() is a powerpc-specific version of irq_to_desc(). That
is reason enough to remove it, but it also doesn't know about sparse
irq_desc support which irq_to_desc() does (when we enable it).

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 6 insertions, 4 deletions

diff --git a/arch/powerpc/sysdev/cpm2_pic.c b/arch/powerpc/sysdev/cpm2_pic.c
index 78f1f7cca0a0..722cf72e190d 100644
--- a/arch/powerpc/sysdev/cpm2_pic.c
+++ b/arch/powerpc/sysdev/cpm2_pic.c
@@ -115,11 +115,13 @@ static void cpm2_ack(unsigned int virq)
 
 static void cpm2_end_irq(unsigned int virq)
 {
+        struct irq_desc *desc;
         int     bit, word;
         unsigned int irq_nr = virq_to_hw(virq);
 
-        if (!(irq_desc[irq_nr].status & (IRQ_DISABLED|IRQ_INPROGRESS))
-                        && irq_desc[irq_nr].action) {
+        desc = irq_to_desc(irq_nr);
+        if (!(desc->status & (IRQ_DISABLED|IRQ_INPROGRESS))
+                        && desc->action) {
 
                 bit = irq_to_siubit[irq_nr];
                 word = irq_to_siureg[irq_nr];
@@ -138,7 +140,7 @@ static void cpm2_end_irq(unsigned int virq)
 static int cpm2_set_irq_type(unsigned int virq, unsigned int flow_type)
 {
         unsigned int src = virq_to_hw(virq);
-        struct irq_desc *desc = get_irq_desc(virq);
+        struct irq_desc *desc = irq_to_desc(virq);
         unsigned int vold, vnew, edibit;
 
         if (flow_type == IRQ_TYPE_NONE)
@@ -210,7 +212,7 @@ static int cpm2_pic_host_map(struct irq_host *h, unsigned int virq,
 {
         pr_debug("cpm2_pic_host_map(%d, 0x%lx)\n", virq, hw);
 
-        get_irq_desc(virq)->status |= IRQ_LEVEL;
+        irq_to_desc(virq)->status |= IRQ_LEVEL;
         set_irq_chip_and_handler(virq, &cpm2_pic, handle_level_irq);
         return 0;
 }