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| author | Michael Grzeschik <m.grzeschik@pengutronix.de> | 2021-06-28 17:53:11 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-27 15:59:19 +0200 |
| commit | fc78941d8169cba40e420eb24a88789b0406c738 (patch) | |
| tree | f2778995fc0993797696a4d44962404dae39b89b /drivers/usb/gadget/function/uvc.h | |
| parent | e81e7f9a0eb9536d5976acf5d95290338032a198 (diff) | |
| download | lwn-fc78941d8169cba40e420eb24a88789b0406c738.tar.gz lwn-fc78941d8169cba40e420eb24a88789b0406c738.zip | |
usb: gadget: uvc: decrease the interrupt load to a quarter
With usb3 we handle many more requests. Decrease the interrupt load by
only enabling the interrupt every quarter of the allocated requests.
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
--
v1 -> v2: - edited patch description
- removed extra parantheses
- added a comment for the logic
- using unsigned int instead of int
- reinitializing req_int_count in uvcg_video_enable
v2 -> v3: -
Link: https://lore.kernel.org/r/20210628155311.16762-6-m.grzeschik@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/gadget/function/uvc.h')
| -rw-r--r-- | drivers/usb/gadget/function/uvc.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/gadget/function/uvc.h b/drivers/usb/gadget/function/uvc.h index 36b78f8b3cd4..255a61bd6a6a 100644 --- a/drivers/usb/gadget/function/uvc.h +++ b/drivers/usb/gadget/function/uvc.h @@ -101,6 +101,8 @@ struct uvc_video { struct list_head req_free; spinlock_t req_lock; + unsigned int req_int_count; + void (*encode) (struct usb_request *req, struct uvc_video *video, struct uvc_buffer *buf); |