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[PATCH] rtc: ds1685: actually spin forever in poweroff path, part 2

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From Josh Poimboeuf <jpoimboe@redhat.com>
Newsgroups linux.kernel
Subject [PATCH] rtc: ds1685: actually spin forever in poweroff path, part 2
Date Fri, 15 Apr 2016 16:30:02 +0200
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objtool reports the following warning:

  drivers/rtc/rtc-ds1685.o: warning: objtool: ds1685_rtc_poweroff() falls through to next function ds1685_rtc_work_queue()

Similar to commit 361c6ed6b153 ("rtc: ds1685: actually spin forever in
poweroff error path"), there's another unreachable() annotation which is
actually reachable, which we missed the first time.

Actually spin forever to be consistent with the comment and to make the
unreachable() annotation guaranteed to be unreachable.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
---
 drivers/rtc/rtc-ds1685.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/rtc/rtc-ds1685.c b/drivers/rtc/rtc-ds1685.c
index 1e6cfc8..0255808 100644
--- a/drivers/rtc/rtc-ds1685.c
+++ b/drivers/rtc/rtc-ds1685.c
@@ -2213,6 +2213,7 @@ ds1685_rtc_poweroff(struct platform_device *pdev)
 			   (ctrl4a | RTC_CTRL_4A_PAB));
 
 		/* Spin ... we do not switch back to bank0. */
+		while(1);
 		unreachable();
 	}
 }
-- 
2.4.11

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Thread

[PATCH] rtc: ds1685: actually spin forever in poweroff path, part 2 Josh Poimboeuf <jpoimboe@redhat.com> - 2016-04-15 16:30 +0200
  Re: [PATCH] rtc: ds1685: actually spin forever in poweroff path,  part 2 Alexandre Belloni <alexandre.belloni@free-electrons.com> - 2016-04-19 00:40 +0200

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