linux-kernel - [PATCH] usb: gadget: remove driver from pending list on probe error

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Message-id: <1454935334-2678-1-git-send-email-m.szyprowski@samsung.com>
Date:	Mon, 08 Feb 2016 13:42:14 +0100
From:	Marek Szyprowski <m.szyprowski@...sung.com>
To:	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	Marek Szyprowski <m.szyprowski@...sung.com>,
	Ruslan Bilovol <ruslan.bilovol@...il.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Vegard Nossum <vegard.nossum@...cle.com>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Peter Chen <peter.chen@...escale.com>,
	Felipe Balbi <balbi@...nel.org>
Subject: [PATCH] usb: gadget: remove driver from pending list on probe error

Retry gadget probe only if the probe result is -EPROBE_DEFER, not on
every probe error.

Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>
---
 drivers/usb/gadget/udc/udc-core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/udc/udc-core.c b/drivers/usb/gadget/udc/udc-core.c
index 4bde2e110e44..6599277cc8f5 100644
--- a/drivers/usb/gadget/udc/udc-core.c
+++ b/drivers/usb/gadget/udc/udc-core.c
@@ -413,9 +413,10 @@ int usb_add_gadget_udc_release(struct device *parent, struct usb_gadget *gadget,
 		if (!driver->udc_name || strcmp(driver->udc_name,
 						dev_name(&udc->dev)) == 0) {
 			ret = udc_bind_to_driver(udc, driver);
+			if (ret != -EPROBE_DEFER)
+				list_del(&driver->pending);
 			if (ret)
 				goto err4;
-			list_del(&driver->pending);
 			break;
 		}
 	}
-- 
1.9.2