From: Ulf Hansson <ulf.hansson@linaro.org>
Date: Sat, 3 Nov 2012 19:16:51 +0000 (-0700)
Subject: Input: nomadik-ske-keypad - fixup use of clk
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4e99aab78ab2adf7645b7f58b2b549e6ea205dd7;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

Input: nomadik-ske-keypad - fixup use of clk

Do proper error handling for clk and make sure clocks are being
prepared|unprepared as well as enabled|disabled.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---

diff --git a/drivers/input/keyboard/nomadik-ske-keypad.c b/drivers/input/keyboard/nomadik-ske-keypad.c
index 49f5fa64e0b1..95dcc9bdeec3 100644
--- a/drivers/input/keyboard/nomadik-ske-keypad.c
+++ b/drivers/input/keyboard/nomadik-ske-keypad.c
@@ -287,14 +287,19 @@ static int __init ske_keypad_probe(struct platform_device *pdev)
 					   keypad->keymap, input);
 	if (error) {
 		dev_err(&pdev->dev, "Failed to build keymap\n");
-		goto err_iounmap;
+		goto err_clk;
 	}
 
 	input_set_capability(input, EV_MSC, MSC_SCAN);
 	if (!plat->no_autorepeat)
 		__set_bit(EV_REP, input->evbit);
 
-	clk_enable(keypad->clk);
+	error = clk_prepare_enable(keypad->clk);
+	if (error) {
+		dev_err(&pdev->dev, "Failed to prepare/enable clk\n");
+		goto err_clk;
+	}
+
 
 	/* go through board initialization helpers */
 	if (keypad->board->init)
@@ -330,7 +335,8 @@ static int __init ske_keypad_probe(struct platform_device *pdev)
 err_free_irq:
 	free_irq(keypad->irq, keypad);
 err_clk_disable:
-	clk_disable(keypad->clk);
+	clk_disable_unprepare(keypad->clk);
+err_clk:
 	clk_put(keypad->clk);
 err_iounmap:
 	iounmap(keypad->reg_base);
@@ -351,7 +357,7 @@ static int __devexit ske_keypad_remove(struct platform_device *pdev)
 
 	input_unregister_device(keypad->input);
 
-	clk_disable(keypad->clk);
+	clk_disable_unprepare(keypad->clk);
 	clk_put(keypad->clk);
 
 	if (keypad->board->exit)