[PATCH v3 2/2] USB hub_probe: put initialization before usage

From: Eugene Korenevsky
Date: Mon Nov 07 2016 - 13:55:28 EST


Minor optimization: move initialization immediately before usage.
This gives a chance for more accurate register allocation by the compiler.

Signed-off-by: Eugene Korenevsky <ekorenevsky@xxxxxxxxx>
---
drivers/usb/core/hub.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 7a20980..c7f6b5f 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1742,7 +1742,6 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id)
struct usb_device *hdev;
struct usb_hub *hub;

- desc = intf->cur_altsetting;
hdev = interface_to_usbdev(intf);

/*
@@ -1813,6 +1812,7 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id)
}
#endif

+ desc = intf->cur_altsetting;
if (!hub_check_descriptor_sanity(desc)) {
dev_err(&intf->dev, "bad descriptor, ignoring hub\n");
return -EIO;
--
2.10.2