---

yaml --- r: 1320 b: refs/heads/master c: 1808caf h: refs/heads/master v: v3
git-mirror · May 21, 2005 · 7ac1eff · 7ac1eff
1 parent 4a42629
commit 7ac1eff
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Showing 4 changed files with 21 additions and 14 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 912490db699d83cb3d03570b63df7448677a3f56
+refs/heads/master: 1808caffaf448f0ad42ba04b25825fc170cf8e44
diff --git a/trunk/drivers/serial/8250.c b/trunk/drivers/serial/8250.c
@@ -682,8 +682,6 @@ static void autoconfig_16550a(struct uart_8250_port *up)
 	 * from EXCR1. Switch back to bank 0, change it in MCR. Then
 	 * switch back to bank 2, read it from EXCR1 again and check
 	 * it's changed. If so, set baud_base in EXCR2 to 921600. -- dwmw2
-	 * On PowerPC we don't want to change baud_base, as we have
-	 * a number of different divisors.  -- Tom Rini
 	 */
 	serial_outp(up, UART_LCR, 0);
 	status1 = serial_in(up, UART_MCR);
@@ -699,16 +697,25 @@ static void autoconfig_16550a(struct uart_8250_port *up)
 		serial_outp(up, UART_MCR, status1);
 
 		if ((status2 ^ status1) & UART_MCR_LOOP) {
-#ifndef CONFIG_PPC
+			unsigned short quot;
+
 			serial_outp(up, UART_LCR, 0xE0);
+
+			quot = serial_inp(up, UART_DLM) << 8;
+			quot += serial_inp(up, UART_DLL);
+			quot <<= 3;
+
 			status1 = serial_in(up, 0x04); /* EXCR1 */
 			status1 &= ~0xB0; /* Disable LOCK, mask out PRESL[01] */
 			status1 |= 0x10;  /* 1.625 divisor for baud_base --> 921600 */
 			serial_outp(up, 0x04, status1);
+
+			serial_outp(up, UART_DLL, quot & 0xff);
+			serial_outp(up, UART_DLM, quot >> 8);
+
 			serial_outp(up, UART_LCR, 0);
-			up->port.uartclk = 921600*16;
-#endif
 
+			up->port.uartclk = 921600*16;
 			up->port.type = PORT_NS16550A;
 			up->capabilities |= UART_NATSEMI;
 			return;

diff --git a/trunk/include/linux/spinlock.h b/trunk/include/linux/spinlock.h
@@ -248,7 +248,7 @@ typedef struct {
 
 #define _spin_trylock_bh(lock)	({preempt_disable(); local_bh_disable(); \
 				_raw_spin_trylock(lock) ? \
-				1 : ({preempt_enable(); local_bh_enable(); 0;});})
+				1 : ({preempt_enable_no_resched(); local_bh_enable(); 0;});})
 
 #define _spin_lock(lock)	\
 do { \
@@ -383,15 +383,15 @@ do { \
 #define _spin_unlock_bh(lock) \
 do { \
 	_raw_spin_unlock(lock); \
-	preempt_enable(); \
+	preempt_enable_no_resched(); \
 	local_bh_enable(); \
 	__release(lock); \
 } while (0)
 
 #define _write_unlock_bh(lock) \
 do { \
 	_raw_write_unlock(lock); \
-	preempt_enable(); \
+	preempt_enable_no_resched(); \
 	local_bh_enable(); \
 	__release(lock); \
 } while (0)
@@ -423,8 +423,8 @@ do { \
 #define _read_unlock_bh(lock)	\
 do { \
 	_raw_read_unlock(lock);	\
+	preempt_enable_no_resched();	\
 	local_bh_enable();	\
-	preempt_enable();	\
 	__release(lock); \
 } while (0)
 

diff --git a/trunk/kernel/spinlock.c b/trunk/kernel/spinlock.c
@@ -294,7 +294,7 @@ EXPORT_SYMBOL(_spin_unlock_irq);
 void __lockfunc _spin_unlock_bh(spinlock_t *lock)
 {
 	_raw_spin_unlock(lock);
-	preempt_enable();
+	preempt_enable_no_resched();
 	local_bh_enable();
 }
 EXPORT_SYMBOL(_spin_unlock_bh);
@@ -318,7 +318,7 @@ EXPORT_SYMBOL(_read_unlock_irq);
 void __lockfunc _read_unlock_bh(rwlock_t *lock)
 {
 	_raw_read_unlock(lock);
-	preempt_enable();
+	preempt_enable_no_resched();
 	local_bh_enable();
 }
 EXPORT_SYMBOL(_read_unlock_bh);
@@ -342,7 +342,7 @@ EXPORT_SYMBOL(_write_unlock_irq);
 void __lockfunc _write_unlock_bh(rwlock_t *lock)
 {
 	_raw_write_unlock(lock);
-	preempt_enable();
+	preempt_enable_no_resched();
 	local_bh_enable();
 }
 EXPORT_SYMBOL(_write_unlock_bh);
@@ -354,7 +354,7 @@ int __lockfunc _spin_trylock_bh(spinlock_t *lock)
 	if (_raw_spin_trylock(lock))
 		return 1;
 
-	preempt_enable();
+	preempt_enable_no_resched();
 	local_bh_enable();
 	return 0;
 }