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[usb,v6,1/6] usb: core: phy: fix return value of usb_phy_roothub_exit()

Message ID 20180418193951.17922-2-martin.blumenstingl@googlemail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Martin Blumenstingl April 18, 2018, 7:39 p.m. UTC 
usb_phy_roothub_exit() should return the error code from the phy_exit()
call if exiting the PHY failed.
However, since a wrong variable is used usb_phy_roothub_exit() currently
always returns 0, even if one of the phy_exit calls returned an error.
Clang also reports this bug:
kernel/drivers/usb/core/phy.c:114:8: warning: explicitly assigning value of
variable of type 'int' to itself [-Wself-assign] error, forbidden
warning: phy.c:114

Fix this by assigning the error code from phy_exit() to the "ret"
variable to propagate the error correctly.

Fixes: 07dbff0ddbd86c ("usb: core: add a wrapper for the USB PHYs on the HCD")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org>
Tested-by: Keerthy <j-keerthy@ti.com>
---
 drivers/usb/core/phy.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox

Patch

diff --git a/drivers/usb/core/phy.c b/drivers/usb/core/phy.c
index 09b7c43c0ea4..f19aaa3c899c 100644
--- a/drivers/usb/core/phy.c
+++ b/drivers/usb/core/phy.c
@@ -111,7 +111,7 @@  int usb_phy_roothub_exit(struct usb_phy_roothub *phy_roothub)
 	list_for_each_entry(roothub_entry, head, list) {
 		err = phy_exit(roothub_entry->phy);
 		if (err)
-			ret = ret;
+			ret = err;
 	}
 
 	return ret;