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Message-Id: <1373386597-3884-1-git-send-email-swarren@wwwdotorg.org> Date: Tue, 9 Jul 2013 10:16:37 -0600 From: Stephen Warren <swarren@...dotorg.org> To: Eric Biederman <ebiederm@...ssion.com> Cc: kexec@...ts.infradead.org, linux-kernel@...r.kernel.org, Stephen Warren <swarren@...dia.com> Subject: [PATCH REPOST] kexec: return error of machine_kexec() fails From: Stephen Warren <swarren@...dia.com> Prior to commit 3ab8352 "kexec jump", if machine_kexec() returned, sys_reboot() would return -EINVAL. This patch restores this behaviour for the non-KEXEC_JUMP case, where machine_kexec() is not expected to return. This situation can occur on ARM, where kexec requires disabling all but one CPU using CPU hotplug. However, if hotplug isn't supported by the particular HW the kernel is running on, then kexec cannot succeed. Signed-off-by: Stephen Warren <swarren@...dia.com> Acked-by: Will Deacon <will.deacon@....com> --- kernel/kexec.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/kexec.c b/kernel/kexec.c index 59f7b55..bde1190 100644 --- a/kernel/kexec.c +++ b/kernel/kexec.c @@ -1702,6 +1702,8 @@ int kernel_kexec(void) pm_restore_console(); unlock_system_sleep(); } +#else + error = -EINVAL; #endif Unlock: -- 1.8.1.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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