From 77733f8a33488307e7d4b9077d174647ecea92e1 Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Tue, 16 Dec 2008 06:23:05 +0000 Subject: [PATCH] powerpc: Make default kexec/crash_kernel ops implicit This removes the need for each platform to specify default kexec and crash kernel ops, thus effectively adds a working kexec support for most 6xx/7xx/7xxx-based boards. Platforms that can't cope with default ops will explode in some weird way (a hang or reboot is most likely), which means that the board's kexec support should be fixed or blacklisted via dummy _prepare callback returning -ENOSYS. Signed-off-by: Anton Vorontsov Signed-off-by: Paul Mackerras --- arch/powerpc/kernel/machine_kexec.c | 21 +++++++++------------ 1 file changed, 9 insertions(+), 12 deletions(-) diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c index 037ade74a99e..4f797c0b7148 100644 --- a/arch/powerpc/kernel/machine_kexec.c +++ b/arch/powerpc/kernel/machine_kexec.c @@ -22,6 +22,8 @@ void machine_crash_shutdown(struct pt_regs *regs) { if (ppc_md.machine_crash_shutdown) ppc_md.machine_crash_shutdown(regs); + else + default_machine_crash_shutdown(regs); } /* @@ -33,11 +35,8 @@ int machine_kexec_prepare(struct kimage *image) { if (ppc_md.machine_kexec_prepare) return ppc_md.machine_kexec_prepare(image); - /* - * Fail if platform doesn't provide its own machine_kexec_prepare - * implementation. - */ - return -ENOSYS; + else + return default_machine_kexec_prepare(image); } void machine_kexec_cleanup(struct kimage *image) @@ -54,13 +53,11 @@ void machine_kexec(struct kimage *image) { if (ppc_md.machine_kexec) ppc_md.machine_kexec(image); - else { - /* - * Fall back to normal restart if platform doesn't provide - * its own kexec function, and user insist to kexec... - */ - machine_restart(NULL); - } + else + default_machine_kexec(image); + + /* Fall back to normal restart if we're still alive. */ + machine_restart(NULL); for(;;); }