epca: Kill the big kernel lock

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

Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 3 deletions

diff --git a/drivers/char/epca.c b/drivers/char/epca.c
index 6f5ffe1320f7..d9df46aa0fba 100644
--- a/drivers/char/epca.c
+++ b/drivers/char/epca.c
@@ -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)))