1 files changed, 24 insertions, 14 deletions

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 0f67197a3783..d4e051b578f6 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -24,6 +24,7 @@
 #include <linux/serial.h>
 #include <linux/clk.h>
 #include <linux/delay.h>
+#include <linux/pinctrl/consumer.h>
 #include <linux/rational.h>
 #include <linux/slab.h>
 #include <linux/of.h>
@@ -706,27 +707,25 @@ static irqreturn_t imx_uart_rtsint(int irq, void *dev_id)
 {
 	struct imx_port *sport = dev_id;
 	u32 usr1;
-	unsigned long flags;
 
-	spin_lock_irqsave(&sport->port.lock, flags);
+	spin_lock(&sport->port.lock);
 
 	imx_uart_writel(sport, USR1_RTSD, USR1);
 	usr1 = imx_uart_readl(sport, USR1) & USR1_RTSS;
 	uart_handle_cts_change(&sport->port, !!usr1);
 	wake_up_interruptible(&sport->port.state->port.delta_msr_wait);
 
-	spin_unlock_irqrestore(&sport->port.lock, flags);
+	spin_unlock(&sport->port.lock);
 	return IRQ_HANDLED;
 }
 
 static irqreturn_t imx_uart_txint(int irq, void *dev_id)
 {
 	struct imx_port *sport = dev_id;
-	unsigned long flags;
 
-	spin_lock_irqsave(&sport->port.lock, flags);
+	spin_lock(&sport->port.lock);
 	imx_uart_transmit_buffer(sport);
-	spin_unlock_irqrestore(&sport->port.lock, flags);
+	spin_unlock(&sport->port.lock);
 	return IRQ_HANDLED;
 }
 
@@ -735,9 +734,8 @@ static irqreturn_t imx_uart_rxint(int irq, void *dev_id)
 	struct imx_port *sport = dev_id;
 	unsigned int rx, flg, ignored = 0;
 	struct tty_port *port = &sport->port.state->port;
-	unsigned long flags;
 
-	spin_lock_irqsave(&sport->port.lock, flags);
+	spin_lock(&sport->port.lock);
 
 	while (imx_uart_readl(sport, USR2) & USR2_RDR) {
 		u32 usr2;
@@ -797,7 +795,7 @@ static irqreturn_t imx_uart_rxint(int irq, void *dev_id)
 	}
 
 out:
-	spin_unlock_irqrestore(&sport->port.lock, flags);
+	spin_unlock(&sport->port.lock);
 	tty_flip_buffer_push(port);
 	return IRQ_HANDLED;
 }
@@ -903,13 +901,11 @@ static irqreturn_t imx_uart_int(int irq, void *dev_id)
 	}
 
 	if (usr1 & USR1_DTRD) {
-		unsigned long flags;
-
 		imx_uart_writel(sport, USR1_DTRD, USR1);
 
-		spin_lock_irqsave(&sport->port.lock, flags);
+		spin_lock(&sport->port.lock);
 		imx_uart_mctrl_check(sport);
-		spin_unlock_irqrestore(&sport->port.lock, flags);
+		spin_unlock(&sport->port.lock);
 
 		ret = IRQ_HANDLED;
 	}
@@ -2384,8 +2380,13 @@ static int imx_uart_remove(struct platform_device *pdev)
 
 static void imx_uart_restore_context(struct imx_port *sport)
 {
-	if (!sport->context_saved)
+	unsigned long flags;
+
+	spin_lock_irqsave(&sport->port.lock, flags);
+	if (!sport->context_saved) {
+		spin_unlock_irqrestore(&sport->port.lock, flags);
 		return;
+	}
 
 	imx_uart_writel(sport, sport->saved_reg[4], UFCR);
 	imx_uart_writel(sport, sport->saved_reg[5], UESC);
@@ -2398,11 +2399,15 @@ static void imx_uart_restore_context(struct imx_port *sport)
 	imx_uart_writel(sport, sport->saved_reg[2], UCR3);
 	imx_uart_writel(sport, sport->saved_reg[3], UCR4);
 	sport->context_saved = false;
+	spin_unlock_irqrestore(&sport->port.lock, flags);
 }
 
 static void imx_uart_save_context(struct imx_port *sport)
 {
+	unsigned long flags;
+
 	/* Save necessary regs */
+	spin_lock_irqsave(&sport->port.lock, flags);
 	sport->saved_reg[0] = imx_uart_readl(sport, UCR1);
 	sport->saved_reg[1] = imx_uart_readl(sport, UCR2);
 	sport->saved_reg[2] = imx_uart_readl(sport, UCR3);
@@ -2414,6 +2419,7 @@ static void imx_uart_save_context(struct imx_port *sport)
 	sport->saved_reg[8] = imx_uart_readl(sport, UBMR);
 	sport->saved_reg[9] = imx_uart_readl(sport, IMX21_UTS);
 	sport->context_saved = true;
+	spin_unlock_irqrestore(&sport->port.lock, flags);
 }
 
 static void imx_uart_enable_wakeup(struct imx_port *sport, bool on)
@@ -2447,6 +2453,8 @@ static int imx_uart_suspend_noirq(struct device *dev)
 
 	clk_disable(sport->clk_ipg);
 
+	pinctrl_pm_select_sleep_state(dev);
+
 	return 0;
 }
 
@@ -2455,6 +2463,8 @@ static int imx_uart_resume_noirq(struct device *dev)
 	struct imx_port *sport = dev_get_drvdata(dev);
 	int ret;
 
+	pinctrl_pm_select_default_state(dev);
+
 	ret = clk_enable(sport->clk_ipg);
 	if (ret)
 		return ret;