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Message-Id: <1275425591-8803-10-git-send-email-arnd@arndb.de>
Date: Tue, 1 Jun 2010 22:52:49 +0200
From: Arnd Bergmann <arnd@...db.de>
To: Greg KH <gregkh@...e.de>
Cc: linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
Alan Cox <alan@...rguk.ukuu.org.uk>,
Frederic Weisbecker <fweisbec@...il.com>,
John Kacur <jkacur@...hat.com>, Alan Cox <alan@...ux.intel.com>
Subject: [PATCH 09/31] specialix; Kill the BKL
From: Alan Cox <alan@...ux.intel.com>
Use the port mutex instead
Signed-off-by: Alan Cox <alan@...ux.intel.com>
---
drivers/char/specialix.c | 11 +++++------
1 files changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c
index 2c24fcd..7be456f 100644
--- a/drivers/char/specialix.c
+++ b/drivers/char/specialix.c
@@ -1863,8 +1863,7 @@ static int sx_set_serial_info(struct specialix_port *port,
return -EFAULT;
}
- lock_kernel();
-
+ mutex_lock(&port->port.mutex);
change_speed = ((port->port.flags & ASYNC_SPD_MASK) !=
(tmp.flags & ASYNC_SPD_MASK));
change_speed |= (tmp.custom_divisor != port->custom_divisor);
@@ -1875,7 +1874,7 @@ static int sx_set_serial_info(struct specialix_port *port,
((tmp.flags & ~ASYNC_USR_MASK) !=
(port->port.flags & ~ASYNC_USR_MASK))) {
func_exit();
- unlock_kernel();
+ mutex_unlock(&port->port.mutex);
return -EPERM;
}
port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) |
@@ -1892,7 +1891,7 @@ static int sx_set_serial_info(struct specialix_port *port,
sx_change_speed(bp, port);
func_exit();
- unlock_kernel();
+ mutex_unlock(&port->port.mutex);
return 0;
}
@@ -1906,7 +1905,7 @@ static int sx_get_serial_info(struct specialix_port *port,
func_enter();
memset(&tmp, 0, sizeof(tmp));
- lock_kernel();
+ mutex_lock(&port->port.mutex);
tmp.type = PORT_CIRRUS;
tmp.line = port - sx_port;
tmp.port = bp->base;
@@ -1917,7 +1916,7 @@ static int sx_get_serial_info(struct specialix_port *port,
tmp.closing_wait = port->port.closing_wait * HZ/100;
tmp.custom_divisor = port->custom_divisor;
tmp.xmit_fifo_size = CD186x_NFIFO;
- unlock_kernel();
+ mutex_unlock(&port->port.mutex);
if (copy_to_user(retinfo, &tmp, sizeof(tmp))) {
func_exit();
return -EFAULT;
--
1.7.0.4
--
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