+ ia64-fix-build-error-due-to-switch-case-label-appearing-next-to-declaration.patch added to mm-hotfixes-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 3440 bytes --]


The patch titled
     Subject: ia64: fix build error due to switch case label appearing next to declaration
has been added to the -mm mm-hotfixes-unstable branch.  Its filename is
     ia64-fix-build-error-due-to-switch-case-label-appearing-next-to-declaration.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/ia64-fix-build-error-due-to-switch-case-label-appearing-next-to-declaration.patch

This patch will later appear in the mm-hotfixes-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days

------------------------------------------------------
From: James Morse <james.morse@arm.com>
Subject: ia64: fix build error due to switch case label appearing next to declaration
Date: Tue, 17 Jan 2023 15:16:32 +0000

Since commit aa06a9bd8533 ("ia64: fix clock_getres(CLOCK_MONOTONIC) to
report ITC frequency"), gcc 10.1.0 fails to build ia64 with the gnomic:
| ../arch/ia64/kernel/sys_ia64.c: In function 'ia64_clock_getres':
| ../arch/ia64/kernel/sys_ia64.c:189:3: error: a label can only be part of a statement and a declaration is not a statement
|   189 |   s64 tick_ns = DIV_ROUND_UP(NSEC_PER_SEC, local_cpu_data->itc_freq);

This line appears immediately after a case label in a switch.

Move the declarations out of the case, to the top of the function.

Link: https://lkml.kernel.org/r/20230117151632.393836-1-james.morse@arm.com
Fixes: aa06a9bd8533 ("ia64: fix clock_getres(CLOCK_MONOTONIC) to report ITC frequency")
Signed-off-by: James Morse <james.morse@arm.com>
Cc: Émeric Maschino <emeric.maschino@gmail.com>
Cc: matoro <matoro_mailinglist_kernel@matoro.tk>
Cc: Sergei Trofimovich <slyich@gmail.com>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---


--- a/arch/ia64/kernel/sys_ia64.c~ia64-fix-build-error-due-to-switch-case-label-appearing-next-to-declaration
+++ a/arch/ia64/kernel/sys_ia64.c
@@ -170,6 +170,9 @@ ia64_mremap (unsigned long addr, unsigne
 asmlinkage long
 ia64_clock_getres(const clockid_t which_clock, struct __kernel_timespec __user *tp)
 {
+	struct timespec64 rtn_tp;
+	s64 tick_ns;
+
 	/*
 	 * ia64's clock_gettime() syscall is implemented as a vdso call
 	 * fsys_clock_gettime(). Currently it handles only
@@ -185,8 +188,8 @@ ia64_clock_getres(const clockid_t which_
 	switch (which_clock) {
 	case CLOCK_REALTIME:
 	case CLOCK_MONOTONIC:
-		s64 tick_ns = DIV_ROUND_UP(NSEC_PER_SEC, local_cpu_data->itc_freq);
-		struct timespec64 rtn_tp = ns_to_timespec64(tick_ns);
+		tick_ns = DIV_ROUND_UP(NSEC_PER_SEC, local_cpu_data->itc_freq);
+		rtn_tp = ns_to_timespec64(tick_ns);
 		return put_timespec64(&rtn_tp, tp);
 	}
 
_

Patches currently in -mm which might be from james.morse@arm.com are

ia64-fix-build-error-due-to-switch-case-label-appearing-next-to-declaration.patch