Patch "MIPS: ip22: Fix ip28 build for modern gcc" has been added to the 4.9-stable tree

Patch "MIPS: ip22: Fix ip28 build for modern gcc" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    MIPS: ip22: Fix ip28 build for modern gcc

to the 4.9-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:
     mips-ip22-fix-ip28-build-for-modern-gcc.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 23ca9b522383d3b9b7991d8586db30118992af4a Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Tue, 17 Jan 2017 16:18:46 +0100
Subject: MIPS: ip22: Fix ip28 build for modern gcc

From: Arnd Bergmann <arnd@arndb.de>

commit 23ca9b522383d3b9b7991d8586db30118992af4a upstream.

kernelci reports a failure of the ip28_defconfig build after upgrading its
gcc version:

arch/mips/sgi-ip22/Platform:29: *** gcc doesn't support needed option -mr10k-cache-barrier=store.  Stop.

The problem apparently is that the -mr10k-cache-barrier=store option is now
rejected for CPUs other than r10k. Explicitly including the CPU in the
check fixes this and is safe because both options were introduced in
gcc-4.4.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/15049/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/mips/sgi-ip22/Platform |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/mips/sgi-ip22/Platform
+++ b/arch/mips/sgi-ip22/Platform
@@ -25,7 +25,7 @@ endif
 # Simplified: what IP22 does at 128MB+ in ksegN, IP28 does at 512MB+ in xkphys
 #
 ifdef CONFIG_SGI_IP28
-  ifeq ($(call cc-option-yn,-mr10k-cache-barrier=store), n)
+  ifeq ($(call cc-option-yn,-march=r10000 -mr10k-cache-barrier=store), n)
       $(error gcc doesn't support needed option -mr10k-cache-barrier=store)
   endif
 endif


Patches currently in stable-queue which might be from arnd@arndb.de are

queue-4.9/mips-ip27-disable-qlge-driver-in-defconfig.patch
queue-4.9/bcm63xx_enet-avoid-uninitialized-variable-warning.patch
queue-4.9/mips-update-ip27_defconfig-for-scsi_dh-change.patch
queue-4.9/mtd-pmcmsp-use-kstrndup-instead-of-kmalloc-strncpy.patch
queue-4.9/cpmac-remove-hopeless-warning.patch
queue-4.9/mips-vdso-avoid-duplicate-cac_base-definition.patch
queue-4.9/mips-ip22-fix-ip28-build-for-modern-gcc.patch
queue-4.9/mips-update-lemote2f_defconfig-for-cpu_freq_stat-change.patch
queue-4.9/crypto-improve-gcc-optimization-flags-for-serpent-and-wp512.patch
queue-4.9/mips-ralink-remove-unused-rt-_wdt_reset-functions.patch
queue-4.9/mips-ralink-remove-unused-timer-functions.patch
queue-4.9/mips-update-defconfigs-for-nf_ct_proto_dccp-udplite-change.patch