linux-kernel - [PATCH 3.13 016/140] usb: dwc3: fix the glue drivers using the nop phy

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Date:	Tue,  4 Feb 2014 13:10:03 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	Felipe Balbi <balbi@...com>
Subject: [PATCH 3.13 016/140] usb: dwc3: fix the glue drivers using the nop phy

3.13-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Heikki Krogerus <heikki.krogerus@...ux.intel.com>

commit 13518673f1419f2667985a6fca4543e44143408b upstream.

The reset_gpio member of the usb_phy_gen_xceiv_platform_data
structure needs the have negative value or phy-generic's
probe will fail unless DT is used. 0 is a valid gpio number.

This fixes an issue where phy-generic fails to probe with
message: "usb_phy_gen_xceiv.0: Error requesting RESET GPIO 0".

Signed-off-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Signed-off-by: Felipe Balbi <balbi@...com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/usb/dwc3/dwc3-exynos.c |    1 +
 drivers/usb/dwc3/dwc3-pci.c    |    1 +
 2 files changed, 2 insertions(+)

--- a/drivers/usb/dwc3/dwc3-exynos.c
+++ b/drivers/usb/dwc3/dwc3-exynos.c
@@ -50,6 +50,7 @@ static int dwc3_exynos_register_phys(str
 
 	exynos->usb2_phy = pdev;
 	pdata.type = USB_PHY_TYPE_USB2;
+	pdata.gpio_reset = -1;
 
 	ret = platform_device_add_data(exynos->usb2_phy, &pdata, sizeof(pdata));
 	if (ret)
--- a/drivers/usb/dwc3/dwc3-pci.c
+++ b/drivers/usb/dwc3/dwc3-pci.c
@@ -52,6 +52,7 @@ static int dwc3_pci_register_phys(struct
 
 	glue->usb2_phy = pdev;
 	pdata.type = USB_PHY_TYPE_USB2;
+	pdata.gpio_reset = -1;
 
 	ret = platform_device_add_data(glue->usb2_phy, &pdata, sizeof(pdata));
 	if (ret)


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