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Commit 7cc34fd0 authored by Alan Cox's avatar Alan Cox Committed by Greg Kroah-Hartman
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epca: Kill the big kernel lock 



The lock is no longer needed for wait until sent paths so this can go

Signed-off-by: default avatarAlan Cox <alan@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 25c3cdf8

drivers/char/epca.c

+1 −3
Original line number Diff line number Diff line
@@ -36,7 +36,7 @@ 
#include <linux/ctype.h>

#include <linux/tty.h>

#include <linux/tty_flip.h>

#include <linux/smp_lock.h>

#include <linux/slab.h>

#include <linux/ioport.h>

#include <linux/interrupt.h>

#include <linux/uaccess.h>
@@ -2105,7 +2105,6 @@ static int pc_ioctl(struct tty_struct *tty, struct file *file, 
		break;

	case DIGI_SETAW:

	case DIGI_SETAF:

		lock_kernel();

		if (cmd == DIGI_SETAW) {

			/* Setup an event to indicate when the transmit

			   buffer empties */
@@ -2118,7 +2117,6 @@ static int pc_ioctl(struct tty_struct *tty, struct file *file, 
			if (tty->ldisc->ops->flush_buffer)

				tty->ldisc->ops->flush_buffer(tty);

		}

		unlock_kernel();

		/* Fall Thru */

	case DIGI_SETA:

		if (copy_from_user(&ch->digiext, argp, sizeof(digi_t)))