m68k: Simplify low level interrupt handling code

[linux.git] / arch / m68k / kernel / entry.S

diff --git a/arch/m68k/kernel/entry.S b/arch/m68k/kernel/entry.S
index a78f5649e8decf3fbd80c3d1a54567644f6fd385..b54ac7aba850eaf02ac995a857e673102039f3be 100644 (file)
--- a/arch/m68k/kernel/entry.S
+++ b/arch/m68k/kernel/entry.S
@@ -45,7 +45,7 @@
 .globl system_call, buserr, trap, resume
 .globl sys_call_table
 .globl __sys_fork, __sys_clone, __sys_vfork
-.globl ret_from_interrupt, bad_interrupt
+.globl bad_interrupt
 .globl auto_irqhandler_fixup
 .globl user_irqvec_fixup
 
@@ -275,8 +275,6 @@ do_delayed_trace:
 ENTRY(auto_inthandler)
        SAVE_ALL_INT
        GET_CURRENT(%d0)
-       movel   %d0,%a1
-       addqb   #1,%a1@(TINFO_PREEMPT+1)
                                        |  put exception # in d0
        bfextu  %sp@(PT_OFF_FORMATVEC){#4,#10},%d0
        subw    #VEC_SPUR,%d0
@@ -286,32 +284,13 @@ ENTRY(auto_inthandler)
 auto_irqhandler_fixup = . + 2
        jsr     do_IRQ                  |  process the IRQ
        addql   #8,%sp                  |  pop parameters off stack
-
-ret_from_interrupt:
-       movel   %curptr@(TASK_STACK),%a1
-       subqb   #1,%a1@(TINFO_PREEMPT+1)
-       jeq     ret_from_last_interrupt
-2:     RESTORE_ALL
-
-       ALIGN
-ret_from_last_interrupt:
-       moveq   #(~ALLOWINT>>8)&0xff,%d0
-       andb    %sp@(PT_OFF_SR),%d0
-       jne     2b
-
-       /* check if we need to do software interrupts */
-       tstl    irq_stat+CPUSTAT_SOFTIRQ_PENDING
-       jeq     .Lret_from_exception
-       pea     ret_from_exception
-       jra     do_softirq
+       jra     ret_from_exception
 
 /* Handler for user defined interrupt vectors */
 
 ENTRY(user_inthandler)
        SAVE_ALL_INT
        GET_CURRENT(%d0)
-       movel   %d0,%a1
-       addqb   #1,%a1@(TINFO_PREEMPT+1)
                                        |  put exception # in d0
        bfextu  %sp@(PT_OFF_FORMATVEC){#4,#10},%d0
 user_irqvec_fixup = . + 2
@@ -321,29 +300,18 @@ user_irqvec_fixup = . + 2
        movel   %d0,%sp@-               |  put vector # on stack
        jsr     do_IRQ                  |  process the IRQ
        addql   #8,%sp                  |  pop parameters off stack
-
-       movel   %curptr@(TASK_STACK),%a1
-       subqb   #1,%a1@(TINFO_PREEMPT+1)
-       jeq     ret_from_last_interrupt
-       RESTORE_ALL
+       jra     ret_from_exception
 
 /* Handler for uninitialized and spurious interrupts */
 
 ENTRY(bad_inthandler)
        SAVE_ALL_INT
        GET_CURRENT(%d0)
-       movel   %d0,%a1
-       addqb   #1,%a1@(TINFO_PREEMPT+1)
 
        movel   %sp,%sp@-
        jsr     handle_badint
        addql   #4,%sp
-
-       movel   %curptr@(TASK_STACK),%a1
-       subqb   #1,%a1@(TINFO_PREEMPT+1)
-       jeq     ret_from_last_interrupt
-       RESTORE_ALL
-
+       jra     ret_from_exception
 
 resume:
        /*