[MIPS] Rewrite all the assembler interrupt handlers to C.

Saves like 1,600 lines of code, is way easier to debug, compilers
frequently do a better job than the cut and paste type of handlers many
boards had.  And finally having all the stuff done in a single place
also means alot of bug potencial for the MT ASE is gone.

The only surviving handler in assembler is the DECstation one; I hope
Maciej will rewrite it.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

2 files changed, 3 insertions, 10 deletions

diff --git a/arch/mips/dec/int-handler.S b/arch/mips/dec/int-handler.S
index 5bafd585ac3e..e8ec93e33fe6 100644
--- a/arch/mips/dec/int-handler.S
+++ b/arch/mips/dec/int-handler.S
@@ -36,7 +36,7 @@
                 .text
                 .set    noreorder
 /*
- * decstation_handle_int: Interrupt handler for DECstations
+ * plat_irq_dispatch: Interrupt handler for DECstations
  *
  * We follow the model in the Indy interrupt code by David Miller, where he
  * says: a lot of complication here is taken away because:
@@ -125,11 +125,7 @@
  * just take another exception, big deal.
  */
                 .align  5
-                NESTED(decstation_handle_int, PT_SIZE, ra)
-                .set    noat
-                SAVE_ALL
-                CLI                             # TEST: interrupts should be off
-                .set    at
+                NESTED(plat_irq_dispatch, PT_SIZE, ra)
                 .set    noreorder
 
                 /*
@@ -286,7 +282,7 @@ spurious:
                  nop
                 j       ret_from_irq
                  nop
-                END(decstation_handle_int)
+                END(plat_irq_dispatch)
 
 /*
  * Generic unimplemented interrupt routines -- cpu_mask_nr_tbl
diff --git a/arch/mips/dec/setup.c b/arch/mips/dec/setup.c
index 7c1ca8f6330e..ad5d436d80c1 100644
--- a/arch/mips/dec/setup.c
+++ b/arch/mips/dec/setup.c
@@ -48,8 +48,6 @@ extern void dec_machine_halt(void);
 extern void dec_machine_power_off(void);
 extern irqreturn_t dec_intr_halt(int irq, void *dev_id, struct pt_regs *regs);
 
-extern asmlinkage void decstation_handle_int(void);
-
 unsigned long dec_kn_slot_base, dec_kn_slot_size;
 
 EXPORT_SYMBOL(dec_kn_slot_base);
@@ -744,7 +742,6 @@ void __init arch_init_irq(void)
                 panic("Don't know how to set this up!");
                 break;
         }
-        set_except_vector(0, decstation_handle_int);
 
         /* Free the FPU interrupt if the exception is present. */
         if (!cpu_has_nofpuex) {