linux-kernel - Re: [PATCH] tools/bootconfig: Fix a build error accroding to undefined fallthrough

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Message-Id: <20210521080713.3b7a45a26655995b88372d59@kernel.org>
Date:   Fri, 21 May 2021 08:07:13 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH] tools/bootconfig: Fix a build error accroding to
 undefined fallthrough

On Thu, 20 May 2021 11:47:13 -0400
Steven Rostedt <rostedt@...dmis.org> wrote:

> Yeah, I have it cued up too. Can it wait till next week?

Yes, of course. Sorry for interruption.

Thank you!

> 
> --Steve
> 
> 
> On May 20, 2021 10:07:38 AM EDT, Masami Hiramatsu <mhiramat@...nel.org> wrote:
> >Hi Steve,
> >
> >Can you pick at least this fix since it is a critical bug?
> >
> >Thank you,
> >
> >On Thu, 13 May 2021 12:06:33 +0900
> >Masami Hiramatsu <mhiramat@...nel.org> wrote:
> >
> >> Since the "fallthrough" is defined only in the kernel, building
> >> lib/bootconfig.c as a part of user-space tools causes a build
> >> error.
> >> 
> >> Add a dummy fallthrough to avoid the build error.
> >> 
> >> Cc: stable@...r.kernel.org
> >> Fixes: 4c1ca831adb1 ("Revert "lib: Revert use of fallthrough
> >pseudo-keyword in lib/"")
> >> Signed-off-by: Masami Hiramatsu <mhiramat@...nel.org>
> >> ---
> >>  tools/bootconfig/include/linux/bootconfig.h |    4 ++++
> >>  1 file changed, 4 insertions(+)
> >> 
> >> diff --git a/tools/bootconfig/include/linux/bootconfig.h
> >b/tools/bootconfig/include/linux/bootconfig.h
> >> index 078cbd2ba651..de7f30f99af3 100644
> >> --- a/tools/bootconfig/include/linux/bootconfig.h
> >> +++ b/tools/bootconfig/include/linux/bootconfig.h
> >> @@ -4,4 +4,8 @@
> >>  
> >>  #include "../../../../include/linux/bootconfig.h"
> >>  
> >> +#ifndef fallthrough
> >> +# define fallthrough
> >> +#endif
> >> +
> >>  #endif
> >> 
> 
> -- 
> Sent from my Android device with K-9 Mail. Please excuse my brevity and top posting.


-- 
Masami Hiramatsu <mhiramat@...nel.org>