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Date:	Tue, 11 Nov 2014 11:13:38 -0600
From:	<dinguyen@...nsource.altera.com>
To:	<paulz@...opsys.com>, <balbi@...com>
CC:	<dinh.linux@...il.com>, <swarren@...dotorg.org>,
	<b.zolnierkie@...sung.com>, <matthijs@...in.nl>,
	<r.baldyga@...sung.com>, <jg1.han@...sung.com>,
	<sachin.kamat@...aro.org>, <ben-linux@...ff.org>,
	<dianders@...omium.org>, <kever.yang@...k-chips.com>,
	<linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	Dinh Nguyen <dinguyen@...nsource.altera.com>
Subject: [PATCHv7 6/8] usb: dwc2: gadget: Do not fail probe if there isn't a clock node

From: Dinh Nguyen <dinguyen@...nsource.altera.com>

Since the dwc2 hcd driver is currently not looking for a clock node during
init, we should not completely fail if there isn't a clock provided.
By assigning clk = NULL, this allows the driver, when configured for dual-role
mode, to be able to continue loading the host portion of the driver when
a clock node is not specified.

Signed-off-by: Dinh Nguyen <dinguyen@...nsource.altera.com>
---
v7: Reworked to use clk=NULL and remove the need to is IS_ERR(clk)
v6: none
v5: reworked to not access gadget functions from the hcd.
---
 drivers/usb/dwc2/gadget.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index 37c7916..367689b 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -3431,6 +3431,7 @@ int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq)
 
 	hsotg->clk = devm_clk_get(dev, "otg");
 	if (IS_ERR(hsotg->clk)) {
+		hsotg->clk = NULL;
 		dev_err(dev, "cannot get otg clock\n");
 		return PTR_ERR(hsotg->clk);
 	}
-- 
2.0.3

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