diff options
| author | Michal Nazarewicz <mina86@mina86.com> | 2011-08-30 17:11:19 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-09-18 01:29:04 -0700 |
| commit | e538dfdae85244fd2c4231725d82cc1f1bc4942c (patch) | |
| tree | f8471dd9af305b95557d29a30f427c85418b1621 /include/linux/usb | |
| parent | c58a76cdd7ab5a945a44fd2d64f6faf40323f95b (diff) | |
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>
Diffstat (limited to 'include/linux/usb')
| -rw-r--r-- | include/linux/usb/ch9.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h index 1ded281eff8..f32a64e57f9 100644 --- a/include/linux/usb/ch9.h +++ b/include/linux/usb/ch9.h @@ -868,6 +868,18 @@ enum usb_device_speed { USB_SPEED_SUPER, /* usb 3.0 */ }; +#ifdef __KERNEL__ + +/** + * usb_speed_string() - Returns human readable-name of the speed. + * @speed: The speed to return human-readable name for. If it's not + * any of the speeds defined in usb_device_speed enum, string for + * USB_SPEED_UNKNOWN will be returned. + */ +extern const char *usb_speed_string(enum usb_device_speed speed); + +#endif + enum usb_device_state { /* NOTATTACHED isn't in the USB spec, and this state acts * the same as ATTACHED ... but it's clearer this way. |