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Subject[PATCH] 14/41 sound/oss/uart6850.c - convert cli to spinlocks
From
--- vanilla-2.5.32/sound/oss/uart6850.c	Sat Apr 20 18:25:21 2002
+++ linux-2.5-cli-oss/sound/oss/uart6850.c Tue Aug 13 15:51:12 2002
@@ -23,7 +23,7 @@

#include <linux/init.h>
#include <linux/module.h>
-
+#include <linux/spinlock.h>
/* Mon Nov 22 22:38:35 MET 1993 marco@driq.home.usn.nl:
* added 6850 support, used with COVOX SoundMaster II and custom cards.
*/
@@ -71,6 +71,7 @@
static int uart6850_irq;
static int uart6850_detected;
static int my_dev;
+static spinlock_t lock=SPIN_LOCK_UNLOCKED;

static void (*midi_input_intr) (int dev, unsigned char data);
static void poll_uart6850(unsigned long dummy);
@@ -122,9 +123,7 @@
if (!(uart6850_opened & OPEN_READ))
return; /* Device has been closed */

- save_flags(flags);
- cli();
-
+ spin_lock_irqsave(&lock,flags);
if (input_avail())
uart6850_input_loop();

@@ -135,7 +134,7 @@
* Come back later
*/

- restore_flags(flags);
+ spin_unlock_irqrestore(&lock,flags);
}

static int uart6850_open(int dev, int mode,
@@ -176,13 +175,12 @@
* Test for input since pending input seems to block the output.
*/

- save_flags(flags);
- cli();
+ spin_lock_irqsave(&lock,flags);

if (input_avail())
uart6850_input_loop();

- restore_flags(flags);
+ spin_unlock_irqrestore(&lock,flags);

/*
* Sometimes it takes about 13000 loops before the output becomes ready
@@ -265,15 +263,14 @@
uart6850_osp = hw_config->osp;
uart6850_irq = hw_config->irq;

- save_flags(flags);
- cli();
+ spin_lock_irqsave(&lock,flags);

for (timeout = 30000; timeout > 0 && !output_ready(); timeout--); /*
* Wait
*/
uart6850_cmd(UART_MODE_ON);
ok = 1;
- restore_flags(flags);
+ spin_unlock_irqrestore(&lock,flags);

conf_printf("6850 Midi Interface", hw_config);

-
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