From 01ab10393c510342ec4ce85df11ccfa3df06bbb2 Mon Sep 17 00:00:00 2001 From: Michael Trimarchi Date: Fri, 3 Apr 2009 17:32:33 +0000 Subject: sh: Fix up DSP context save/restore. There were a number of issues with the DSP context save/restore code, mostly left-over relics from when it was introduced on SH3-DSP with little follow-up testing, resulting in things like task_pt_dspregs() referencing incorrect state on the stack. This follows the MIPS convention of tracking the DSP state in the thread_struct and handling the state save/restore in switch_to() and finish_arch_switch() respectively. The regset interface is also updated, which allows us to finally be rid of task_pt_dspregs() and the special cased task_pt_regs(). Signed-off-by: Michael Trimarchi Signed-off-by: Paul Mundt --- arch/sh/kernel/traps_32.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/sh/kernel/traps_32.c') diff --git a/arch/sh/kernel/traps_32.c b/arch/sh/kernel/traps_32.c index 60dcf87ed019..30ca9c51e52d 100644 --- a/arch/sh/kernel/traps_32.c +++ b/arch/sh/kernel/traps_32.c @@ -664,6 +664,8 @@ asmlinkage void do_reserved_inst(unsigned long r4, unsigned long r5, if (is_dsp_inst(regs)) { /* Enable DSP mode, and restart instruction. */ regs->sr |= SR_DSP; + /* Save DSP mode */ + tsk->thread.dsp_status.status |= SR_DSP; return; } #endif -- cgit v1.2.3