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usb: Provide usb_speed_string() function

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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>
This commit is contained in:
Michal Nazarewicz
2011-08-30 17:11:19 +02:00
committed by Greg Kroah-Hartman
parent c58a76cdd7
commit e538dfdae8
18 changed files with 125 additions and 195 deletions
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drivers/usb/misc/usbtest.c
+2 -19
View File
@@ -2300,25 +2300,8 @@ usbtest_probe(struct usb_interface *intf, const struct usb_device_id *id)
usb_set_intfdata(intf, dev);
dev_info(&intf->dev, "%s\n", info->name);
dev_info(&intf->dev, "%s speed {control%s%s%s%s%s} tests%s\n",
({ char *tmp;
switch (udev->speed) {
case USB_SPEED_LOW:
tmp = "low";
break;
case USB_SPEED_FULL:
tmp = "full";
break;
case USB_SPEED_HIGH:
tmp = "high";
break;
case USB_SPEED_SUPER:
tmp = "super";
break;
default:
tmp = "unknown";
break;
}; tmp; }),
dev_info(&intf->dev, "%s {control%s%s%s%s%s} tests%s\n",
usb_speed_string(udev->speed),
info->ctrl_out ? " in/out" : "",
rtest, wtest,
irtest, iwtest,