From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Date: Tue, 7 May 2013 11:50:31 +0000 (+0800)
Subject: usb: gadget: fix error return code in configfs_composite_bind()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=fea77077d1623c6a8d586266cf55c2289360bea3;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

usb: gadget: fix error return code in configfs_composite_bind()

Fix to return a negative error code in the go through all configs error
handling case instead of 0(usb_add_function() will overwrite ret to 0).
Also use error code from usb_gstrings_attach() in all strings init error
case instead of -EINVAL.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Felipe Balbi <balbi@ti.com>
---

diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c
index 3d5cfc9c2c78..80e7f75a56c7 100644
--- a/drivers/usb/gadget/configfs.c
+++ b/drivers/usb/gadget/configfs.c
@@ -821,8 +821,10 @@ static int configfs_composite_bind(struct usb_gadget *gadget,
 		gi->gstrings[i] = NULL;
 		s = usb_gstrings_attach(&gi->cdev, gi->gstrings,
 				USB_GADGET_FIRST_AVAIL_IDX);
-		if (IS_ERR(s))
+		if (IS_ERR(s)) {
+			ret = PTR_ERR(s);
 			goto err_comp_cleanup;
+		}
 
 		gi->cdev.desc.iManufacturer = s[USB_GADGET_MANUFACTURER_IDX].id;
 		gi->cdev.desc.iProduct = s[USB_GADGET_PRODUCT_IDX].id;
@@ -847,8 +849,10 @@ static int configfs_composite_bind(struct usb_gadget *gadget,
 			}
 			cfg->gstrings[i] = NULL;
 			s = usb_gstrings_attach(&gi->cdev, cfg->gstrings, 1);
-			if (IS_ERR(s))
+			if (IS_ERR(s)) {
+				ret = PTR_ERR(s);
 				goto err_comp_cleanup;
+			}
 			c->iConfiguration = s[0].id;
 		}