Subject: [PATCH] signal/parics: Remove parsic specific definition of __ARCH_UAPI_SA_FLAGS

From: [email-masked] (Eric W. Biederman)
Date: Mon, 30 Nov 2020 11:30:05 -0600

Randy Dunlap wrote:
> On 11/27/20 10:43 AM, Randy Dunlap wrote:
>
> > on parisc, _SA_SIGGFAULT is undefined and causing build errors.
> >
> > commit 23acdc76f1798b090bb9dcc90671cd29d929834e
> > Author: Peter Collingbourne <[email-masked]>
> > Date:   Thu Nov 12 18:53:34 2020 -0800
> >
> >     signal: clear non-uapi flag bits when passing/returning sa_flags
> >
> >
> >
> > _SA_SIGGFAULT is not used or defined anywhere else in the
> > kernel source tree.
>
>
> Here is the build error (although it should be obvious):
>
> ../kernel/signal.c: In function 'do_sigaction':
> ../arch/parisc/include/asm/signal.h:24:30: error: '_SA_SIGGFAULT' undeclared (first use in this function)
>    24 | #define __ARCH_UAPI_SA_FLAGS _SA_SIGGFAULT
>       |                              ^~~~~~~~~~~~~

Stephen Rothwell pointed out:
> _SA_SIGGFAULT was removed by commit
>
>   41f5a81c07cd ("parisc: Drop HP-UX specific fcntl and signal flags")
>
> which was added to Linus' tree in v5.10-rc1.

Solve this by removing the the parisc specific definition of
__ARCH_UAPI_SA_FLAGS that was just added.

Reported-by: Randy Dunlap <[email-masked]>
Fixes: 23acdc76f179 ("signal: clear non-uapi flag bits when passing/returning sa_flags")
Signed-off-by: "Eric W. Biederman" <[email-masked]>
---
 arch/parisc/include/asm/signal.h | 2 --
 1 file changed, 2 deletions(-)

I am applying this trivial fix to my signal-for-v5.11 branch.  Catalin
you shouldn't need to do anything unless someone tests your tree on
parisc.

diff --git a/arch/parisc/include/asm/signal.h b/arch/parisc/include/asm/signal.h
index 30dd1e43ef88..715c96ba2ec8 100644
--- a/arch/parisc/include/asm/signal.h
+++ b/arch/parisc/include/asm/signal.h
@@ -21,8 +21,6 @@ typedef struct {
 	unsigned long sig[_NSIG_WORDS];
 } sigset_t;
 
-#define __ARCH_UAPI_SA_FLAGS	_SA_SIGGFAULT
-
 #include <asm/sigcontext.h>
 
 #endif /* !__ASSEMBLY */
-- 
2.20.1