[MIPS] signal32: no need to save c0_status register in setup_sigcontext32()

All the information in the MIPS c0_status register is priviledged.
Nothing that would constitute part of the thread context.

The one flag one could possibly argument about might be c0_status.fr
but none of the ABIs or tools or application software can make use
of it.

So for consistency with restore_sigcontext32(), which does not
restore c0_status register, this patch remove the saving part.

Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

2 files changed, 0 insertions, 2 deletions

diff --git a/arch/mips/kernel/asm-offsets.c b/arch/mips/kernel/asm-offsets.c
index ea7df4b8da33..c0b089d47181 100644
--- a/arch/mips/kernel/asm-offsets.c
+++ b/arch/mips/kernel/asm-offsets.c
@@ -249,7 +249,6 @@ void output_sc_defines(void)
         offset("#define SC_MDHI       ", struct sigcontext, sc_mdhi);
         offset("#define SC_MDLO       ", struct sigcontext, sc_mdlo);
         offset("#define SC_PC         ", struct sigcontext, sc_pc);
-        offset("#define SC_STATUS     ", struct sigcontext, sc_status);
         offset("#define SC_FPC_CSR    ", struct sigcontext, sc_fpc_csr);
         offset("#define SC_FPC_EIR    ", struct sigcontext, sc_fpc_eir);
         offset("#define SC_HI1        ", struct sigcontext, sc_hi1);
diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c
index 5d102efbdbea..0994d6e1d691 100644
--- a/arch/mips/kernel/signal32.c
+++ b/arch/mips/kernel/signal32.c
@@ -170,7 +170,6 @@ static int setup_sigcontext32(struct pt_regs *regs,
         int i;
 
         err |= __put_user(regs->cp0_epc, &sc->sc_pc);
-        err |= __put_user(regs->cp0_status, &sc->sc_status);
 
         err |= __put_user(0, &sc->sc_regs[0]);
         for (i = 1; i < 32; i++)