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authorRussell King2011-11-01 13:16:26 +0000
committerRussell King2011-11-21 09:47:48 +0000
commite879c862fb81b986095ae7a4676b2281c2f97957 (patch)
treebd7793e9e9924ff4b5826d14267125e8dc22afdd /arch/arm/kernel/process.c
parent5aafec15bdc54cf0722696c95091d7bd674bfcad (diff)
ARM: restart: only perform setup for restart when soft-restarting
We only need to set the system up for a soft-restart if we're going to be doing a soft-restart. Provide a new function (soft_restart()) which does the setup and final call for this, and make platforms use it. Eliminate the call to setup_restart() from the default handler. This means that platforms arch_reset() function is no longer called with the page tables prepared for a soft-restart, and caches will still be enabled. Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Will Deacon <will.deacon@arm.com> Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Viresh Kumar <viresh.kumar@st.com> Acked-by: Krzysztof Ha■asa <khc@pm.waw.pl> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Richard Purdie <richard.purdie@linuxfoundation.org> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel/process.c')
-rw-r--r--arch/arm/kernel/process.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 4181738452fc..1e8b3e2de7a3 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -92,7 +92,7 @@ static int __init hlt_setup(char *__unused)
__setup("nohlt", nohlt_setup);
__setup("hlt", hlt_setup);
-void arm_machine_restart(char mode, const char *cmd)
+void soft_restart(unsigned long addr)
{
/* Disable interrupts first */
local_irq_disable();
@@ -114,7 +114,16 @@ void arm_machine_restart(char mode, const char *cmd)
/* Push out any further dirty data, and ensure cache is empty */
flush_cache_all();
- /* Now call the architecture specific reboot code. */
+ cpu_reset(addr);
+}
+
+void arm_machine_restart(char mode, const char *cmd)
+{
+ /* Disable interrupts first */
+ local_irq_disable();
+ local_fiq_disable();
+
+ /* Call the architecture specific reboot code. */
arch_reset(mode, cmd);
}