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| author | Jussi Kivilinna <jussi.kivilinna@mbnet.fi> | 2011-02-12 20:43:42 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-02-14 15:51:21 -0500 |
| commit | 8662b2518ff7995002378058488326ef7cb80de8 (patch) | |
| tree | e7b0d1c7fca5820a46ac2411a5b4a8e36f8779c4 /drivers/net/wireless/zd1211rw/zd_usb.c | |
| parent | eefdbec1ea8b7093d2c09d1825f68438701723cf (diff) | |
| download | op-kernel-dev-8662b2518ff7995002378058488326ef7cb80de8.zip op-kernel-dev-8662b2518ff7995002378058488326ef7cb80de8.tar.gz | |
zd1211rw: move async iowrite16v up to callers
Writing beacon to device happen through multiple write command calls.
zd_usb_iowrite16v uses synchronous urb call and with multiple write
commands in row causes high CPU usage.
Make asynchronous zd_usb_iowrite16v_async available outside zd_usb.c
and use where possible.
This lower CPU usage from ~10% to ~2% on Intel Atom when running
AP-mode with 100 TU beacon interval.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/zd1211rw/zd_usb.c')
| -rw-r--r-- | drivers/net/wireless/zd1211rw/zd_usb.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/net/wireless/zd1211rw/zd_usb.c b/drivers/net/wireless/zd1211rw/zd_usb.c index c98f6e7..81e8048 100644 --- a/drivers/net/wireless/zd1211rw/zd_usb.c +++ b/drivers/net/wireless/zd1211rw/zd_usb.c @@ -1674,7 +1674,7 @@ static void iowrite16v_urb_complete(struct urb *urb) static int zd_submit_waiting_urb(struct zd_usb *usb, bool last) { - int r; + int r = 0; struct urb *urb = usb->urb_async_waiting; if (!urb) @@ -1700,7 +1700,7 @@ error: return r; } -static void zd_usb_iowrite16v_async_start(struct zd_usb *usb) +void zd_usb_iowrite16v_async_start(struct zd_usb *usb) { ZD_ASSERT(usb_anchor_empty(&usb->submitted_cmds)); ZD_ASSERT(usb->urb_async_waiting == NULL); @@ -1713,7 +1713,7 @@ static void zd_usb_iowrite16v_async_start(struct zd_usb *usb) usb->urb_async_waiting = NULL; } -static int zd_usb_iowrite16v_async_end(struct zd_usb *usb, unsigned int timeout) +int zd_usb_iowrite16v_async_end(struct zd_usb *usb, unsigned int timeout) { int r; @@ -1749,9 +1749,8 @@ error: return r; } -static int zd_usb_iowrite16v_async(struct zd_usb *usb, - const struct zd_ioreq16 *ioreqs, - unsigned int count) +int zd_usb_iowrite16v_async(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs, + unsigned int count) { int r; struct usb_device *udev; |
