2011-05-15 20:23:02 +03:00
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--- a/drivers/cbus/tahvo-usb.c
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+++ b/drivers/cbus/tahvo-usb.c
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2011-03-09 20:26:03 +02:00
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@@ -98,6 +98,7 @@ struct tahvo_usb {
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#ifdef CONFIG_USB_OTG
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int tahvo_mode;
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#endif
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+ struct clk *ick;
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};
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static struct tahvo_usb *tahvo_usb_device;
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@@ -673,6 +674,14 @@ static int __init tahvo_usb_probe(struct
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INIT_WORK(&tu->irq_work, tahvo_usb_irq_work);
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mutex_init(&tu->serialize);
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+ tu->ick = clk_get(NULL, "usb_l4_ick");
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+ if (IS_ERR(tu->ick)) {
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+ dev_err(dev, "Failed to get usb_l4_ick\n");
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+ ret = PTR_ERR(tu->ick);
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+ goto err_free_tu;
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+ }
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+ clk_enable(tu->ick);
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+
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/* Set initial state, so that we generate kevents only on
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* state changes */
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tu->vbus_state = tahvo_read_reg(TAHVO_REG_IDSR) & 0x01;
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@@ -681,10 +690,8 @@ static int __init tahvo_usb_probe(struct
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ret = tahvo_request_irq(TAHVO_INT_VBUSON, tahvo_usb_vbus_interrupt,
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(unsigned long) tu, "vbus_interrupt");
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if (ret != 0) {
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- kfree(tu);
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- tahvo_usb_device = NULL;
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printk(KERN_ERR "Could not register Tahvo interrupt for VBUS\n");
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- return ret;
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+ goto err_release_clk;
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}
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/* Attributes */
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@@ -709,10 +716,7 @@ static int __init tahvo_usb_probe(struct
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ret = otg_set_transceiver(&tu->otg);
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if (ret < 0) {
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printk(KERN_ERR "Cannot register USB transceiver\n");
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- tahvo_usb_device = NULL;
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- kfree(tu);
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- tahvo_free_irq(TAHVO_INT_VBUSON);
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- return ret;
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+ goto err_free_irq;
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}
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dev_set_drvdata(dev, tu);
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@@ -721,6 +725,17 @@ static int __init tahvo_usb_probe(struct
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* may not be generated in addition to this. */
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schedule_work(&tu->irq_work);
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return 0;
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+
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+err_free_irq:
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+ tahvo_free_irq(TAHVO_INT_VBUSON);
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+err_release_clk:
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+ clk_disable(tu->ick);
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+ clk_put(tu->ick);
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+err_free_tu:
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+ kfree(tu);
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+ tahvo_usb_device = NULL;
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+
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+ return ret;
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}
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static int __exit tahvo_usb_remove(struct platform_device *pdev)
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@@ -736,6 +751,8 @@ static int __exit tahvo_usb_remove(struc
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#ifdef CONFIG_USB_OTG
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device_remove_file(&pdev->dev, &dev_attr_otg_mode);
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#endif
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+ clk_disable(tu->ick);
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+ clk_put(tu->ick);
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kfree(tu);
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tahvo_usb_device = NULL;
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