tree ebf0493fa7b53941f830f8b300037f834eb85e59
parent a27873cd234b4248dda342721d6262943e5fa235
author Michael Trimarchi <trimarchi@gandalf.sssup.it> 1238779953 +0000
committer Paul Mundt <lethal@linux-sh.org> 1238860091 -0400

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 <michael@evidence.eu.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>