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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/Makefile
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@@ -53,3 +53,5 @@ obj-$(CONFIG_USB_MUSB_HDRC) += musb/
obj-$(CONFIG_USB_RENESAS_USBHS) += renesas_usbhs/
obj-$(CONFIG_USB_OTG_UTILS) += otg/
obj-$(CONFIG_USB_GADGET) += gadget/
obj-$(CONFIG_USB_COMMON) += usb-common.o