Merge commit 'perf/core' into perf/hw-breakpoint

Conflicts:
	kernel/Makefile
	kernel/trace/Makefile
	kernel/trace/trace.h
	samples/Makefile

Merge reason: We need to be uptodate with the perf events development
branch because we plan to rewrite the breakpoints API on top of
perf events.

1 files changed, 12 insertions, 7 deletions

diff --git a/drivers/serial/uartlite.c b/drivers/serial/uartlite.c
index 3317148a4b93..377f2712289e 100644
--- a/drivers/serial/uartlite.c
+++ b/drivers/serial/uartlite.c
@@ -75,7 +75,7 @@ static struct uart_port ulite_ports[ULITE_NR_UARTS];
 
 static int ulite_receive(struct uart_port *port, int stat)
 {
-	struct tty_struct *tty = port->info->port.tty;
+	struct tty_struct *tty = port->state->port.tty;
 	unsigned char ch = 0;
 	char flag = TTY_NORMAL;
 
@@ -125,7 +125,7 @@ static int ulite_receive(struct uart_port *port, int stat)
 
 static int ulite_transmit(struct uart_port *port, int stat)
 {
-	struct circ_buf *xmit  = &port->info->xmit;
+	struct circ_buf *xmit  = &port->state->xmit;
 
 	if (stat & ULITE_STATUS_TXFULL)
 		return 0;
@@ -154,17 +154,22 @@ static int ulite_transmit(struct uart_port *port, int stat)
 static irqreturn_t ulite_isr(int irq, void *dev_id)
 {
 	struct uart_port *port = dev_id;
-	int busy;
+	int busy, n = 0;
 
 	do {
 		int stat = readb(port->membase + ULITE_STATUS);
 		busy  = ulite_receive(port, stat);
 		busy |= ulite_transmit(port, stat);
+		n++;
 	} while (busy);
 
-	tty_flip_buffer_push(port->info->port.tty);
-
-	return IRQ_HANDLED;
+	/* work done? */
+	if (n > 1) {
+		tty_flip_buffer_push(port->state->port.tty);
+		return IRQ_HANDLED;
+	} else {
+		return IRQ_NONE;
+	}
 }
 
 static unsigned int ulite_tx_empty(struct uart_port *port)
@@ -221,7 +226,7 @@ static int ulite_startup(struct uart_port *port)
 	int ret;
 
 	ret = request_irq(port->irq, ulite_isr,
-			  IRQF_DISABLED | IRQF_SAMPLE_RANDOM, "uartlite", port);
+			  IRQF_SHARED | IRQF_SAMPLE_RANDOM, "uartlite", port);
 	if (ret)
 		return ret;