Input: samsung-keypad - add clk_prepare and clk_unprepare

Add calls to clk_prepare and clk_unprepare as required by commom clock
framework.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/keyboard/samsung-keypad.c b/drivers/input/keyboard/samsung-keypad.c
index 277e26d..9d7a111 100644 (file)
--- a/drivers/input/keyboard/samsung-keypad.c
+++ b/drivers/input/keyboard/samsung-keypad.c
@@ -431,6 +431,12 @@ static int __devinit samsung_keypad_probe(struct platform_device *pdev)
                goto err_unmap_base;
        }
 
+       error = clk_prepare(keypad->clk);
+       if (error) {
+               dev_err(&pdev->dev, "keypad clock prepare failed\n");
+               goto err_put_clk;
+       }
+
        keypad->input_dev = input_dev;
        keypad->pdev = pdev;
        keypad->row_shift = row_shift;
@@ -461,7 +467,7 @@ static int __devinit samsung_keypad_probe(struct platform_device *pdev)
                                           keypad->keycodes, input_dev);
        if (error) {
                dev_err(&pdev->dev, "failed to build keymap\n");
-               goto err_put_clk;
+               goto err_unprepare_clk;
        }
 
        input_set_capability(input_dev, EV_MSC, MSC_SCAN);
@@ -503,6 +509,8 @@ err_free_irq:
        pm_runtime_disable(&pdev->dev);
        device_init_wakeup(&pdev->dev, 0);
        platform_set_drvdata(pdev, NULL);
+err_unprepare_clk:
+       clk_unprepare(keypad->clk);
 err_put_clk:
        clk_put(keypad->clk);
        samsung_keypad_dt_gpio_free(keypad);
@@ -531,6 +539,7 @@ static int __devexit samsung_keypad_remove(struct platform_device *pdev)
         */
        free_irq(keypad->irq, keypad);
 
+       clk_unprepare(keypad->clk);
        clk_put(keypad->clk);
        samsung_keypad_dt_gpio_free(keypad);