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nexedi
linux
Commits
a1952ca9
Commit
a1952ca9
authored
Aug 03, 2002
by
David S. Miller
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SPARC64 NS87303: Replace cli/sti with spinlocking.
parent
0b9daf11
Changes
3
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3 changed files
with
18 additions
and
2 deletions
+18
-2
arch/sparc64/kernel/devices.c
arch/sparc64/kernel/devices.c
+6
-0
arch/sparc64/kernel/sparc64_ksyms.c
arch/sparc64/kernel/sparc64_ksyms.c
+4
-0
include/asm-sparc64/ns87303.h
include/asm-sparc64/ns87303.h
+8
-2
No files found.
arch/sparc64/kernel/devices.c
View file @
a1952ca9
...
...
@@ -10,6 +10,7 @@
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/string.h>
#include <linux/spinlock.h>
#include <asm/page.h>
#include <asm/oplib.h>
...
...
@@ -17,6 +18,11 @@
#include <asm/smp.h>
#include <asm/spitfire.h>
/* Used to synchronize acceses to NatSemi SUPER I/O chip configure
* operations in asm/ns87303.h
*/
spinlock_t
ns87303_lock
=
SPIN_LOCK_UNLOCKED
;
struct
prom_cpuinfo
linux_cpus
[
NR_CPUS
]
__initdata
=
{
{
0
}
};
unsigned
prom_cpu_nodes
[
NR_CPUS
];
int
linux_num_cpus
=
0
;
...
...
arch/sparc64/kernel/sparc64_ksyms.c
View file @
a1952ca9
...
...
@@ -52,6 +52,7 @@
#include <asm/isa.h>
#endif
#include <asm/a.out.h>
#include <asm/ns87303.h>
struct
poll
{
int
fd
;
...
...
@@ -373,3 +374,6 @@ EXPORT_SYMBOL(kbd_pt_regs);
#ifdef CONFIG_DEBUG_BUGVERBOSE
EXPORT_SYMBOL
(
do_BUG
);
#endif
/* for ns8703 */
EXPORT_SYMBOL
(
ns87303_lock
);
include/asm-sparc64/ns87303.h
View file @
a1952ca9
...
...
@@ -78,9 +78,13 @@
#ifdef __KERNEL__
#include <linux/spinlock.h>
#include <asm/system.h>
#include <asm/io.h>
extern
spinlock_t
ns87303_lock
;
static
__inline__
int
ns87303_modify
(
unsigned
long
port
,
unsigned
int
index
,
unsigned
char
clr
,
unsigned
char
set
)
{
...
...
@@ -96,14 +100,16 @@ static __inline__ int ns87303_modify(unsigned long port, unsigned int index,
if
(
index
>
0x0d
)
return
-
EINVAL
;
save_flags
(
flags
);
cli
();
spin_lock_irqsave
(
&
ns87303_lock
,
flags
);
outb
(
index
,
port
);
value
=
inb
(
port
+
1
);
value
&=
~
(
reserved
[
index
]
|
clr
);
value
|=
set
;
outb
(
value
,
port
+
1
);
outb
(
value
,
port
+
1
);
restore_flags
(
flags
);
spin_unlock_irqrestore
(
&
ns87303_lock
,
flags
);
return
0
;
}
...
...
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