From: Alan Cox <alan@linux.intel.com>
To: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
arnd@arndb.de
Subject: [PATCH 08/20] epca: Kill the big kernel lock
Date: Wed, 05 May 2010 11:02:25 +0100 [thread overview]
Message-ID: <20100505100225.3595.67851.stgit@localhost.localdomain> (raw)
In-Reply-To: <20100505100144.3595.65633.stgit@localhost.localdomain>
The lock is no longer needed for wait until sent paths so this can go
Signed-off-by: Alan Cox <alan@linux.intel.com>
---
drivers/char/epca.c | 4 +---
1 files changed, 1 insertions(+), 3 deletions(-)
diff --git a/drivers/char/epca.c b/drivers/char/epca.c
index 6f5ffe1..d9df46a 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)))
next prev parent reply other threads:[~2010-05-05 10:40 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-05 10:01 [PATCH 01/20] stallion: prune lock_kernel calls Alan Cox
2010-05-05 10:01 ` [PATCH 02/20] istallion: use bit ops for the board flags Alan Cox
2010-05-05 10:01 ` [PATCH 03/20] riscom8: kill use of lock_kernel Alan Cox
2010-05-05 10:02 ` [PATCH 04/20] isicom: kill off the BKL Alan Cox
2010-05-05 10:02 ` [PATCH 05/20] rocket: kill BKL Alan Cox
2010-05-05 10:02 ` [PATCH 06/20] synclink: kill the big kernel lock Alan Cox
2010-05-05 10:02 ` [PATCH 07/20] cyclades: Kill off BKL usage Alan Cox
2010-05-05 10:02 ` Alan Cox [this message]
2010-05-05 10:02 ` [PATCH 09/20] specialix; Kill the BKL Alan Cox
2010-05-05 10:02 ` [PATCH 10/20] synclink: reworking locking a bit Alan Cox
2010-05-05 10:02 ` [PATCH 11/20] tty: serial - fix various misuses/mishandlings of port->tty Alan Cox
2010-05-05 10:02 ` [PATCH 12/20] tty: serial - fix tty back references in termios Alan Cox
2010-05-05 10:02 ` [PATCH 13/20] tty: serial - fix tty referencing in set_ldisc Alan Cox
2010-05-05 10:02 ` [PATCH 14/20] vc: Locking clean up Alan Cox
2010-05-05 10:03 ` [PATCH 15/20] tty: Make vt's have a tty_port Alan Cox
2010-05-05 10:03 ` [PATCH 16/20] tty: Move the vt_tty field from the vc_data into the standard tty_port Alan Cox
2010-05-05 10:03 ` [PATCH 17/20] serial: Change the wait for carrier locking Alan Cox
2010-05-05 10:03 ` [PATCH 18/20] serial: add port helpers Alan Cox
2010-05-05 10:03 ` [PATCH 19/20] serial: trim locking on the helpers Alan Cox
2010-05-05 10:03 ` [PATCH 20/20] serial: Use block_til_ready helper Alan Cox
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