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authorStefani Seibold <stefani@seibold.net>2009-12-21 14:37:27 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-22 14:17:56 -0800
commitc1e13f25674ed564948ecb7dfe5f83e578892896 (patch)
tree24fac07b3e2b66dff01c3127b34077de1de4c101 /drivers/platform
parent45465487897a1c6d508b14b904dc5777f7ec7e04 (diff)
downloadop-kernel-dev-c1e13f25674ed564948ecb7dfe5f83e578892896.zip
op-kernel-dev-c1e13f25674ed564948ecb7dfe5f83e578892896.tar.gz
kfifo: move out spinlock
Move the pointer to the spinlock out of struct kfifo. Most users in tree do not actually use a spinlock, so the few exceptions now have to call kfifo_{get,put}_locked, which takes an extra argument to a spinlock. Signed-off-by: Stefani Seibold <stefani@seibold.net> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Andi Kleen <ak@linux.intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/platform')
-rw-r--r--drivers/platform/x86/fujitsu-laptop.c18
-rw-r--r--drivers/platform/x86/sony-laptop.c22
2 files changed, 22 insertions, 18 deletions
diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c
index f999fba..13dc7be 100644
--- a/drivers/platform/x86/fujitsu-laptop.c
+++ b/drivers/platform/x86/fujitsu-laptop.c
@@ -825,7 +825,7 @@ static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
/* kfifo */
spin_lock_init(&fujitsu_hotkey->fifo_lock);
error = kfifo_alloc(&fujitsu_hotkey->fifo, RINGBUFFERSIZE * sizeof(int),
- GFP_KERNEL, &fujitsu_hotkey->fifo_lock);
+ GFP_KERNEL);
if (error) {
printk(KERN_ERR "kfifo_alloc failed\n");
goto err_stop;
@@ -1006,9 +1006,10 @@ static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event)
vdbg_printk(FUJLAPTOP_DBG_TRACE,
"Push keycode into ringbuffer [%d]\n",
keycode);
- status = kfifo_put(&fujitsu_hotkey->fifo,
+ status = kfifo_put_locked(&fujitsu_hotkey->fifo,
(unsigned char *)&keycode,
- sizeof(keycode));
+ sizeof(keycode),
+ &fujitsu_hotkey->fifo_lock);
if (status != sizeof(keycode)) {
vdbg_printk(FUJLAPTOP_DBG_WARN,
"Could not push keycode [0x%x]\n",
@@ -1019,11 +1020,12 @@ static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event)
}
} else if (keycode == 0) {
while ((status =
- kfifo_get
- (&fujitsu_hotkey->fifo, (unsigned char *)
- &keycode_r,
- sizeof
- (keycode_r))) == sizeof(keycode_r)) {
+ kfifo_get_locked(
+ &fujitsu_hotkey->fifo,
+ (unsigned char *) &keycode_r,
+ sizeof(keycode_r),
+ &fujitsu_hotkey->fifo_lock))
+ == sizeof(keycode_r)) {
input_report_key(input, keycode_r, 0);
input_sync(input);
vdbg_printk(FUJLAPTOP_DBG_TRACE,
diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
index 04625a0..1538a0a 100644
--- a/drivers/platform/x86/sony-laptop.c
+++ b/drivers/platform/x86/sony-laptop.c
@@ -300,8 +300,9 @@ static void do_sony_laptop_release_key(struct work_struct *work)
{
struct sony_laptop_keypress kp;
- while (kfifo_get(&sony_laptop_input.fifo, (unsigned char *)&kp,
- sizeof(kp)) == sizeof(kp)) {
+ while (kfifo_get_locked(&sony_laptop_input.fifo, (unsigned char *)&kp,
+ sizeof(kp), &sony_laptop_input.fifo_lock)
+ == sizeof(kp)) {
msleep(10);
input_report_key(kp.dev, kp.key, 0);
input_sync(kp.dev);
@@ -362,8 +363,9 @@ static void sony_laptop_report_input_event(u8 event)
/* we emit the scancode so we can always remap the key */
input_event(kp.dev, EV_MSC, MSC_SCAN, event);
input_sync(kp.dev);
- kfifo_put(&sony_laptop_input.fifo,
- (unsigned char *)&kp, sizeof(kp));
+ kfifo_put_locked(&sony_laptop_input.fifo,
+ (unsigned char *)&kp, sizeof(kp),
+ &sony_laptop_input.fifo_lock);
if (!work_pending(&sony_laptop_release_key_work))
queue_work(sony_laptop_input.wq,
@@ -386,8 +388,7 @@ static int sony_laptop_setup_input(struct acpi_device *acpi_device)
/* kfifo */
spin_lock_init(&sony_laptop_input.fifo_lock);
error =
- kfifo_alloc(&sony_laptop_input.fifo, SONY_LAPTOP_BUF_SIZE, GFP_KERNEL,
- &sony_laptop_input.fifo_lock);
+ kfifo_alloc(&sony_laptop_input.fifo, SONY_LAPTOP_BUF_SIZE, GFP_KERNEL);
if (error) {
printk(KERN_ERR DRV_PFX "kfifo_alloc failed\n");
goto err_dec_users;
@@ -2129,7 +2130,8 @@ static ssize_t sonypi_misc_read(struct file *file, char __user *buf,
return ret;
while (ret < count &&
- (kfifo_get(&sonypi_compat.fifo, &c, sizeof(c)) == sizeof(c))) {
+ (kfifo_get_locked(&sonypi_compat.fifo, &c, sizeof(c),
+ &sonypi_compat.fifo_lock) == sizeof(c))) {
if (put_user(c, buf++))
return -EFAULT;
ret++;
@@ -2308,7 +2310,8 @@ static struct miscdevice sonypi_misc_device = {
static void sonypi_compat_report_event(u8 event)
{
- kfifo_put(&sonypi_compat.fifo, (unsigned char *)&event, sizeof(event));
+ kfifo_put_locked(&sonypi_compat.fifo, (unsigned char *)&event,
+ sizeof(event), &sonypi_compat.fifo_lock);
kill_fasync(&sonypi_compat.fifo_async, SIGIO, POLL_IN);
wake_up_interruptible(&sonypi_compat.fifo_proc_list);
}
@@ -2319,8 +2322,7 @@ static int sonypi_compat_init(void)
spin_lock_init(&sonypi_compat.fifo_lock);
error =
- kfifo_alloc(&sonypi_compat.fifo, SONY_LAPTOP_BUF_SIZE, GFP_KERNEL,
- &sonypi_compat.fifo_lock);
+ kfifo_alloc(&sonypi_compat.fifo, SONY_LAPTOP_BUF_SIZE, GFP_KERNEL);
if (error) {
printk(KERN_ERR DRV_PFX "kfifo_alloc failed\n");
return error;
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