Patch "Kbuild: provide a __UNIQUE_ID for clang" has been added to the 4.4-stable tree

Patch "Kbuild: provide a __UNIQUE_ID for clang" has been added to the 4.4-stable tree

[gregkh]

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

    Kbuild: provide a __UNIQUE_ID for clang

to the 4.4-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:
     kbuild-provide-a-__unique_id-for-clang.patch
and it can be found in the queue-4.4 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 b41c29b0527c7fd6a95d0f71274abb79933bf960 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Mon, 8 Feb 2016 15:38:32 +0100
Subject: Kbuild: provide a __UNIQUE_ID for clang

From: Arnd Bergmann <arnd@arndb.de>

commit b41c29b0527c7fd6a95d0f71274abb79933bf960 upstream.

The default __UNIQUE_ID macro in compiler.h fails to work for some drivers:

drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c:615:1: error: redefinition of
      '__UNIQUE_ID_firmware615'
BRCMF_FW_NVRAM_DEF(4354, "brcmfmac4354-sdio.bin", "brcmfmac4354-sdio.txt");

This adds a copy of the version we use for gcc-4.3 and higher, as the same
one works with all versions of clang that I could find in svn (2.6 and higher).

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Marek <mmarek@suse.com>
Cc: Matthias Kaehlcke <mka@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 include/linux/compiler-clang.h |    5 +++++
 1 file changed, 5 insertions(+)

--- a/include/linux/compiler-clang.h
+++ b/include/linux/compiler-clang.h
@@ -10,3 +10,8 @@
 #undef uninitialized_var
 #define uninitialized_var(x) x = *(&(x))
 #endif
+
+/* same as gcc, this was present in clang-2.6 so we can assume it works
+ * with any version that can compile the kernel
+ */
+#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)


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

queue-4.4/net-mlx5-avoid-build-warning-for-uniprocessor.patch
queue-4.4/xen-avoid-type-warning-in-xchg_xen_ulong.patch
queue-4.4/kbuild-provide-a-__unique_id-for-clang.patch