[SPARC64]: %l6 trap return handling no longer necessary.

Now that we indicate the "restart system call" in the
trap type field of pt_regs->magic, we don't need to
set the %l6 boolean in all of the trap return paths.

And we therefore don't need to pass it to do_notify_resume().

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 17 insertions, 18 deletions

diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S
index f54cd2dd55dc..fd06e937ae1e 100644
--- a/arch/sparc64/kernel/entry.S
+++ b/arch/sparc64/kernel/entry.S
@@ -47,7 +47,7 @@ do_fpdis:
         ba,pt           %xcc, etrap
 109:     or             %g7, %lo(109b), %g7
         add             %g0, %g0, %g0
-        ba,a,pt         %xcc, rtrap_clr_l6
+        ba,a,pt         %xcc, rtrap
 
 1:      TRAP_LOAD_THREAD_REG(%g6, %g1)
         ldub            [%g6 + TI_FPSAVED], %g5
@@ -226,7 +226,7 @@ fp_other_bounce:
         call            do_fpother
          add            %sp, PTREGS_OFF, %o0
         ba,pt           %xcc, rtrap
-         clr            %l6
+         nop
 
         .globl          do_fpother_check_fitos
         .align          32
@@ -489,7 +489,7 @@ utrap_trap:		/* %g3=handler,%g4=level */
         call            bad_trap
          add            %sp, PTREGS_OFF, %o0
         ba,pt           %xcc, rtrap
-         clr            %l6
+         nop
 
 invoke_utrap:
         sllx            %g3, 3, %g3
@@ -607,7 +607,7 @@ __spitfire_cee_trap_continue:
         call            spitfire_access_error
          add            %sp, PTREGS_OFF, %o0
         ba,pt           %xcc, rtrap
-         clr            %l6
+         nop
 
         /* This is the trap handler entry point for ECC correctable
          * errors.  They are corrected, but we listen for the trap
@@ -686,7 +686,7 @@ __spitfire_data_access_exception_tl1:
         call            spitfire_data_access_exception_tl1
          add            %sp, PTREGS_OFF, %o0
         ba,pt           %xcc, rtrap
-         clr            %l6
+         nop
 
 __spitfire_data_access_exception:
         rdpr            %pstate, %g4
@@ -705,7 +705,7 @@ __spitfire_data_access_exception:
         call            spitfire_data_access_exception
          add            %sp, PTREGS_OFF, %o0
         ba,pt           %xcc, rtrap
-         clr            %l6
+         nop
 
         .globl          __spitfire_insn_access_exception
         .globl          __spitfire_insn_access_exception_tl1
@@ -725,7 +725,7 @@ __spitfire_insn_access_exception_tl1:
         call            spitfire_insn_access_exception_tl1
          add            %sp, PTREGS_OFF, %o0
         ba,pt           %xcc, rtrap
-         clr            %l6
+         nop
 
 __spitfire_insn_access_exception:
         rdpr            %pstate, %g4
@@ -743,7 +743,7 @@ __spitfire_insn_access_exception:
         call            spitfire_insn_access_exception
          add            %sp, PTREGS_OFF, %o0
         ba,pt           %xcc, rtrap
-         clr            %l6
+         nop
 
         /* These get patched into the trap table at boot time
          * once we know we have a cheetah processor.
@@ -937,7 +937,7 @@ do_dcpe_tl1_fatal:
         call            cheetah_plus_parity_error
          add            %sp, PTREGS_OFF, %o1
         ba,pt           %xcc, rtrap
-         clr            %l6
+         nop
 
 do_icpe_tl1:
         rdpr            %tl, %g1                ! Save original trap level
@@ -979,7 +979,7 @@ do_icpe_tl1_fatal:
         call            cheetah_plus_parity_error
          add            %sp, PTREGS_OFF, %o1
         ba,pt           %xcc, rtrap
-         clr            %l6
+         nop
         
 dcpe_icpe_tl1_common:
         /* Flush D-cache, re-enable D/I caches in DCU and finally
@@ -1281,7 +1281,7 @@ __do_privact:
         call            do_privact
          add            %sp, PTREGS_OFF, %o0
         ba,pt           %xcc, rtrap
-         clr            %l6
+         nop
 
         .globl          do_mna
 do_mna:
@@ -1308,7 +1308,7 @@ do_mna:
         call            mem_address_unaligned
          add            %sp, PTREGS_OFF, %o0
         ba,pt           %xcc, rtrap
-         clr            %l6
+         nop
 
         .globl          do_lddfmna
 do_lddfmna:
@@ -1326,7 +1326,7 @@ do_lddfmna:
         call            handle_lddfmna
          add            %sp, PTREGS_OFF, %o0
         ba,pt           %xcc, rtrap
-         clr            %l6
+         nop
 
         .globl          do_stdfmna
 do_stdfmna:
@@ -1344,7 +1344,7 @@ do_stdfmna:
         call            handle_stdfmna
          add            %sp, PTREGS_OFF, %o0
         ba,pt           %xcc, rtrap
-         clr            %l6
+         nop
 
         .globl  breakpoint_trap
 breakpoint_trap:
@@ -1424,13 +1424,13 @@ sys32_rt_sigreturn:
 1:              ldx             [%curptr + TI_FLAGS], %l5
                 andcc           %l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
                 be,pt           %icc, rtrap
-                 clr            %l6
+                 nop
                 add             %sp, PTREGS_OFF, %o0
                 call            syscall_trace
                  mov            1, %o1
 
                 ba,pt           %xcc, rtrap
-                 clr            %l6
+                 nop
 
         /* This is how fork() was meant to be done, 8 instruction entry.
          *
@@ -1605,7 +1605,7 @@ ret_sys_call:
         bne,pn          %icc, linux_syscall_trace2
          add            %l1, 0x4, %l2                   ! npc = npc+4
         stx             %l1, [%sp + PTREGS_OFF + PT_V9_TPC]
-        ba,pt           %xcc, rtrap_clr_l6
+        ba,pt           %xcc, rtrap
          stx            %l2, [%sp + PTREGS_OFF + PT_V9_TNPC]
 
 1:
@@ -1616,7 +1616,6 @@ ret_sys_call:
         sub             %g0, %o0, %o0
         or              %g3, %g2, %g3
         stx             %o0, [%sp + PTREGS_OFF + PT_V9_I0]
-        mov             1, %l6
         stx             %g3, [%sp + PTREGS_OFF + PT_V9_TSTATE]
         bne,pn          %icc, linux_syscall_trace2
          add            %l1, 0x4, %l2                   ! npc = npc+4