xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

i8253: Convert i8253_lock to raw_spinlock

Browse Source 
i8253_lock needs to be a real spinlock in preempt-rt, i.e. it can
not be converted to a sleeping lock.

Convert it to raw_spinlock and fix up all users.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
Cc: Jens Axboe <jens.axboe@oracle.com>
LKML-Reference: <20100217163751.030764372@linutronix.de>
This commit is contained in:
Thomas Gleixner
2010-02-17 16:47:10 +00:00
parent 13dda80e48
commit ced918eb74
12 changed files with 36 additions and 36 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/input/joystick/analog.c
View File

@@ -146,11 +146,11 @@ static unsigned int get_time_pit(void)
unsigned long flags;
unsigned int count;
spin_lock_irqsave(&i8253_lock, flags);
raw_spin_lock_irqsave(&i8253_lock, flags);
outb_p(0x00, 0x43);
count = inb_p(0x40);
count |= inb_p(0x40) << 8;
spin_unlock_irqrestore(&i8253_lock, flags);
raw_spin_unlock_irqrestore(&i8253_lock, flags);
return count;
}