diff options
| author | Ming Lei <ming.lei@canonical.com> | 2012-08-21 12:04:27 +0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-09-07 23:03:36 +0400 |
| commit | 32e31de5c37856dba7f174970806e38199e53d81 (patch) | |
| tree | d8d2446ec1b38f0aac30b6b8944a97319fb67ebc /drivers/net/wireless/ath/ath9k/hif_usb.h | |
| parent | ee91592711ed90a1abfbb1b2ceadded11d685164 (diff) | |
| download | linux-32e31de5c37856dba7f174970806e38199e53d81.tar.xz | |
wireless: ath9k-htc: only load firmware in need
It is not necessary to hold the firmware memory during the whole
driver lifetime, and obviously it does waste memory. Suppose there
are 4 ath9k-htc usb dongles working, kernel has to consume about
4*50KBytes RAM to cache firmware for all dongles. After applying the
patch, kernel only caches one single firmware image in RAM for
all ath9k-htc devices just during system suspend/resume cycle.
When system is ready for loading firmware, ath9k-htc can request
the loading from usersapce. During system resume, ath9k-htc still
can load the firmware which was cached in kernel memory before
system suspend.
Cc: ath9k-devel@lists.ath9k.org
Cc: "Luis R. Rodriguez" <mcgrof@qca.qualcomm.com>
Cc: Jouni Malinen <jouni@qca.qualcomm.com>
Cc: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Cc: Senthil Balasubramanian <senthilb@qca.qualcomm.com>
Cc: "John W. Linville" <linville@tuxdriver.com>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/hif_usb.h')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/hif_usb.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.h b/drivers/net/wireless/ath/ath9k/hif_usb.h index 487ff658b4c1..51496e74b83e 100644 --- a/drivers/net/wireless/ath/ath9k/hif_usb.h +++ b/drivers/net/wireless/ath/ath9k/hif_usb.h @@ -85,12 +85,14 @@ struct cmd_buf { }; #define HIF_USB_START BIT(0) +#define HIF_USB_READY BIT(1) struct hif_device_usb { struct usb_device *udev; struct usb_interface *interface; const struct usb_device_id *usb_device_id; - const struct firmware *firmware; + const void *fw_data; + size_t fw_size; struct completion fw_done; struct htc_target *htc_handle; struct hif_usb_tx tx; |