This is a note to let you know that I've just added the patch titled
sparc32: Use generic cmpdi2/ucmpdi2 variants
to the 6.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
sparc32-use-generic-cmpdi2-ucmpdi2-variants.patch
and it can be found in the queue-6.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit feef09432e684ea9df665dd209385a71b878951b
Author: Sam Ravnborg <sam@xxxxxxxxxxxx>
Date: Sat Feb 24 18:42:22 2024 +0100
sparc32: Use generic cmpdi2/ucmpdi2 variants
[ Upstream commit 802a8874a3889a4a0d218d4f73e5855c96d5b8a8 ]
Use the generic variants - the implementation is the same.
As a nice side-effect fix the following warnings:
cmpdi2.c: warning: no previous prototype for '__cmpdi2' [-Wmissing-prototypes]
ucmpdi2.c: warning: no previous prototype for '__ucmpdi2' [-Wmissing-prototypes]
Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
Fixes: 0fcb70851fbf ("Makefile.extrawarn: turn on missing-prototypes globally")
Reviewed-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Tested-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> # build-tested
Reviewed-by: Maciej W. Rozycki <macro@xxxxxxxxxxx>
Tested-by: Maciej W. Rozycki <macro@xxxxxxxxxxx> # build-tested
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Andreas Larsson <andreas@xxxxxxxxxxx>
Reviewed-by: Andreas Larsson <andreas@xxxxxxxxxxx>
Tested-by: Andreas Larsson <andreas@xxxxxxxxxxx>
Signed-off-by: Andreas Larsson <andreas@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20240224-sam-fix-sparc32-all-builds-v2-1-1f186603c5c4@xxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 204c43cb3d435..0c5a98ef11440 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -57,6 +57,8 @@ config SPARC32
select CLZ_TAB
select DMA_DIRECT_REMAP
select GENERIC_ATOMIC64
+ select GENERIC_LIB_CMPDI2
+ select GENERIC_LIB_UCMPDI2
select HAVE_UID16
select LOCK_MM_AND_FIND_VMA
select OLD_SIGACTION
diff --git a/arch/sparc/lib/Makefile b/arch/sparc/lib/Makefile
index 59669ebddd4e1..ee5091dd67ed7 100644
--- a/arch/sparc/lib/Makefile
+++ b/arch/sparc/lib/Makefile
@@ -14,7 +14,7 @@ lib-$(CONFIG_SPARC32) += divdi3.o udivdi3.o
lib-$(CONFIG_SPARC32) += copy_user.o locks.o
lib-$(CONFIG_SPARC64) += atomic_64.o
lib-$(CONFIG_SPARC32) += lshrdi3.o ashldi3.o
-lib-$(CONFIG_SPARC32) += muldi3.o bitext.o cmpdi2.o
+lib-$(CONFIG_SPARC32) += muldi3.o bitext.o
lib-$(CONFIG_SPARC64) += multi3.o
lib-$(CONFIG_SPARC64) += fls.o
lib-$(CONFIG_SPARC64) += fls64.o
@@ -51,5 +51,5 @@ lib-$(CONFIG_SPARC64) += copy_in_user.o memmove.o
lib-$(CONFIG_SPARC64) += mcount.o ipcsum.o xor.o hweight.o ffs.o
obj-$(CONFIG_SPARC64) += iomap.o
-obj-$(CONFIG_SPARC32) += atomic32.o ucmpdi2.o
+obj-$(CONFIG_SPARC32) += atomic32.o
obj-$(CONFIG_SPARC64) += PeeCeeI.o
diff --git a/arch/sparc/lib/cmpdi2.c b/arch/sparc/lib/cmpdi2.c
deleted file mode 100644
index 333367fe73533..0000000000000
--- a/arch/sparc/lib/cmpdi2.c
+++ /dev/null
@@ -1,28 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/module.h>
-
-#include "libgcc.h"
-
-word_type __cmpdi2(long long a, long long b)
-{
- const DWunion au = {
- .ll = a
- };
- const DWunion bu = {
- .ll = b
- };
-
- if (au.s.high < bu.s.high)
- return 0;
- else if (au.s.high > bu.s.high)
- return 2;
-
- if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
- return 0;
- else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
- return 2;
-
- return 1;
-}
-
-EXPORT_SYMBOL(__cmpdi2);
diff --git a/arch/sparc/lib/ucmpdi2.c b/arch/sparc/lib/ucmpdi2.c
deleted file mode 100644
index 82c1cccb12644..0000000000000
--- a/arch/sparc/lib/ucmpdi2.c
+++ /dev/null
@@ -1,20 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/module.h>
-#include "libgcc.h"
-
-word_type __ucmpdi2(unsigned long long a, unsigned long long b)
-{
- const DWunion au = {.ll = a};
- const DWunion bu = {.ll = b};
-
- if ((unsigned int) au.s.high < (unsigned int) bu.s.high)
- return 0;
- else if ((unsigned int) au.s.high > (unsigned int) bu.s.high)
- return 2;
- if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
- return 0;
- else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
- return 2;
- return 1;
-}
-EXPORT_SYMBOL(__ucmpdi2);
