usb: Provide usb_speed_string() function
In a few places in the kernel, the code prints
a human-readable USB device speed (eg. "high speed").
This involves a switch statement sometimes wrapped
around in ({ ... }) block leading to code repetition.
To mitigate this issue, this commit introduces
usb_speed_string() function, which returns
a human-readable name of provided speed.
It also changes a few places switch was used to use
this new function. This changes a bit the way the
speed is printed in few instances at the same time
standardising it.
Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c
index 722c468..271a9d8 100644
--- a/drivers/usb/gadget/atmel_usba_udc.c
+++ b/drivers/usb/gadget/atmel_usba_udc.c
@@ -1718,13 +1718,12 @@
spin_lock(&udc->lock);
}
- if (status & USBA_HIGH_SPEED) {
- DBG(DBG_BUS, "High-speed bus reset detected\n");
+ if (status & USBA_HIGH_SPEED)
udc->gadget.speed = USB_SPEED_HIGH;
- } else {
- DBG(DBG_BUS, "Full-speed bus reset detected\n");
+ else
udc->gadget.speed = USB_SPEED_FULL;
- }
+ DBG(DBG_BUS, "%s bus reset detected\n",
+ usb_speed_string(udc->gadget.speed));
ep0 = &usba_ep[0];
ep0->desc = &usba_ep0_desc;