linux-kernel - [PATCH 3.14 04/17] asmlinkage, pnp: Make variables used from assembler code visible

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Message-Id: <20160517011347.108812810@linuxfoundation.org>
Date:	Mon, 16 May 2016 18:14:05 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Jaroslav Kysela <perex@...ex.cz>,
	Andi Kleen <ak@...ux.intel.com>,
	"H. Peter Anvin" <hpa@...ux.intel.com>,
	Christoph Biedl <linux-kernel.bfrz@...chmal.in-ulm.de>
Subject: [PATCH 3.14 04/17] asmlinkage, pnp: Make variables used from assembler code visible

3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andi Kleen <ak@...ux.intel.com>

commit a99aa42d0253f033cbb85096d3f2bd82201321e6 upstream.

Mark variables referenced from assembler files visible.

This fixes compile problems with LTO.

Cc: Jaroslav Kysela <perex@...ex.cz>
Signed-off-by: Andi Kleen <ak@...ux.intel.com>
Link: http://lkml.kernel.org/r/1391845930-28580-4-git-send-email-ak@linux.intel.com
Signed-off-by: H. Peter Anvin <hpa@...ux.intel.com>
Cc: Christoph Biedl <linux-kernel.bfrz@...chmal.in-ulm.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/pnp/pnpbios/bioscalls.c |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

--- a/drivers/pnp/pnpbios/bioscalls.c
+++ b/drivers/pnp/pnpbios/bioscalls.c
@@ -21,7 +21,7 @@
 
 #include "pnpbios.h"
 
-static struct {
+__visible struct {
 	u16 offset;
 	u16 segment;
 } pnp_bios_callpoint;
@@ -41,6 +41,7 @@ asmlinkage void pnp_bios_callfunc(void);
 
 __asm__(".text			\n"
 	__ALIGN_STR "\n"
+	".globl pnp_bios_callfunc\n"
 	"pnp_bios_callfunc:\n"
 	"	pushl %edx	\n"
 	"	pushl %ecx	\n"
@@ -66,9 +67,9 @@ static struct desc_struct bad_bios_desc
  * after PnP BIOS oopses.
  */
 
-u32 pnp_bios_fault_esp;
-u32 pnp_bios_fault_eip;
-u32 pnp_bios_is_utter_crap = 0;
+__visible u32 pnp_bios_fault_esp;
+__visible u32 pnp_bios_fault_eip;
+__visible u32 pnp_bios_is_utter_crap = 0;
 
 static spinlock_t pnp_bios_lock;