tty: xuartps: Use devm_kzalloc

Use the device managed interface for memory allocation, simplifying
error paths.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index 103ba88..8c07459 100644 (file)
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -949,27 +949,26 @@ static int xuartps_probe(struct platform_device *pdev)
        struct resource *res, *res2;
        struct xuartps *xuartps_data;
 
-       xuartps_data = kzalloc(sizeof(*xuartps_data), GFP_KERNEL);
+       xuartps_data = devm_kzalloc(&pdev->dev, sizeof(*xuartps_data),
+                       GFP_KERNEL);
        if (!xuartps_data)
                return -ENOMEM;
 
        xuartps_data->aperclk = devm_clk_get(&pdev->dev, "aper_clk");
        if (IS_ERR(xuartps_data->aperclk)) {
                dev_err(&pdev->dev, "aper_clk clock not found.\n");
-               rc = PTR_ERR(xuartps_data->aperclk);
-               goto err_out_free;
+               return PTR_ERR(xuartps_data->aperclk);
        }
        xuartps_data->refclk = devm_clk_get(&pdev->dev, "ref_clk");
        if (IS_ERR(xuartps_data->refclk)) {
                dev_err(&pdev->dev, "ref_clk clock not found.\n");
-               rc = PTR_ERR(xuartps_data->refclk);
-               goto err_out_free;
+               return PTR_ERR(xuartps_data->refclk);
        }
 
        rc = clk_prepare_enable(xuartps_data->aperclk);
        if (rc) {
                dev_err(&pdev->dev, "Unable to enable APER clock.\n");
-               goto err_out_free;
+               return rc;
        }
        rc = clk_prepare_enable(xuartps_data->refclk);
        if (rc) {
@@ -1020,8 +1019,6 @@ err_out_clk_disable:
        clk_disable_unprepare(xuartps_data->refclk);
 err_out_clk_dis_aper:
        clk_disable_unprepare(xuartps_data->aperclk);
-err_out_free:
-       kfree(xuartps_data);
 
        return rc;
 }
@@ -1043,7 +1040,6 @@ static int xuartps_remove(struct platform_device *pdev)
        port->mapbase = 0;
        clk_disable_unprepare(xuartps_data->refclk);
        clk_disable_unprepare(xuartps_data->aperclk);
-       kfree(xuartps_data);
        return rc;
 }