serial: mxs-auart: Remove irq from private structure

The irq number is only used inside the probe function, so there is no need
to keep it in the private mxs_auart_port structure.

Use a local 'irq' variable for storing the irq number instead.

Also make its type of 'int' as platform_get_irq() may fail and return a
negative number.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 4 insertions, 6 deletions

diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c
index 1e9fb370600b..767fddaa7576 100644
--- a/drivers/tty/serial/mxs-auart.c
+++ b/drivers/tty/serial/mxs-auart.c
@@ -152,8 +152,6 @@ struct mxs_auart_port {
         unsigned int mctrl_prev;
         enum mxs_auart_type devtype;
 
-        unsigned int irq;
-
         struct clk *clk;
         struct device *dev;
 
@@ -1228,7 +1226,7 @@ static int mxs_auart_probe(struct platform_device *pdev)
                         of_match_device(mxs_auart_dt_ids, &pdev->dev);
         struct mxs_auart_port *s;
         u32 version;
-        int ret = 0;
+        int ret = 0, irq;
         struct resource *r;
 
         s = devm_kzalloc(&pdev->dev, sizeof(*s), GFP_KERNEL);
@@ -1266,9 +1264,9 @@ static int mxs_auart_probe(struct platform_device *pdev)
 
         s->mctrl_prev = 0;
 
-        s->irq = platform_get_irq(pdev, 0);
-        s->port.irq = s->irq;
-        ret = devm_request_irq(&pdev->dev, s->irq, mxs_auart_irq_handle, 0,
+        irq = platform_get_irq(pdev, 0);
+        s->port.irq = irq;
+        ret = devm_request_irq(&pdev->dev, irq, mxs_auart_irq_handle, 0,
                                dev_name(&pdev->dev), s);
         if (ret)
                 return ret;