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path: root/drivers/net/wireless/ath/carl9170/usb.c
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* USB: Disable hub-initiated LPM for comms devices.Sarah Sharp2012-05-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hub-initiated LPM is not good for USB communications devices. Comms devices should be able to tell when their link can go into a lower power state, because they know when an incoming transmission is finished. Ideally, these devices would slam their links into a lower power state, using the device-initiated LPM, after finishing the last packet of their data transfer. If we enable the idle timeouts for the parent hubs to enable hub-initiated LPM, we will get a lot of useless LPM packets on the bus as the devices reject LPM transitions when they're in the middle of receiving data. Worse, some devices might blindly accept the hub-initiated LPM and power down their radios while they're in the middle of receiving a transmission. The Intel Windows folks are disabling hub-initiated LPM for all USB communications devices under a xHCI USB 3.0 host. In order to keep the Linux behavior as close as possible to Windows, we need to do the same in Linux. Set the disable_hub_initiated_lpm flag for for all USB communications drivers. I know there aren't currently any USB 3.0 devices that implement these class specifications, but we should be ready if they do. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Cc: Marcel Holtmann <marcel@holtmann.org> Cc: Gustavo Padovan <gustavo@padovan.org> Cc: Johan Hedberg <johan.hedberg@gmail.com> Cc: Hansjoerg Lipp <hjlipp@web.de> Cc: Tilman Schmidt <tilman@imap.cc> Cc: Karsten Keil <isdn@linux-pingi.de> Cc: Peter Korsgaard <jacmet@sunsite.dk> Cc: Jan Dumon <j.dumon@option.com> Cc: Petko Manolov <petkan@users.sourceforge.net> Cc: Steve Glendinning <steve.glendinning@smsc.com> Cc: "John W. Linville" <linville@tuxdriver.com> Cc: Kalle Valo <kvalo@qca.qualcomm.com> 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: Christian Lamparter <chunkeey@googlemail.com> Cc: Brett Rudley <brudley@broadcom.com> Cc: Roland Vossen <rvossen@broadcom.com> Cc: Arend van Spriel <arend@broadcom.com> Cc: "Franky (Zhenhui) Lin" <frankyl@broadcom.com> Cc: Kan Yan <kanyan@broadcom.com> Cc: Dan Williams <dcbw@redhat.com> Cc: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Cc: Ivo van Doorn <IvDoorn@gmail.com> Cc: Gertjan van Wingerde <gwingerde@gmail.com> Cc: Helmut Schaa <helmut.schaa@googlemail.com> Cc: Herton Ronaldo Krzesinski <herton@canonical.com> Cc: Hin-Tak Leung <htl10@users.sourceforge.net> Cc: Larry Finger <Larry.Finger@lwfinger.net> Cc: Chaoming Li <chaoming_li@realsil.com.cn> Cc: Daniel Drake <dsd@gentoo.org> Cc: Ulrich Kunitz <kune@deine-taler.de> Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
* USB: convert drivers/net/* to use module_usb_driver()Greg Kroah-Hartman2011-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This converts the drivers in drivers/net/* to use the module_usb_driver() macro which makes the code smaller and a bit simpler. Added bonus is that it removes some unneeded kernel log messages about drivers loading and/or unloading. Cc: Wolfgang Grandegger <wg@grandegger.com> Cc: Samuel Ortiz <samuel@sortiz.org> Cc: Oliver Neukum <oliver@neukum.name> Cc: Peter Korsgaard <jacmet@sunsite.dk> Cc: Petko Manolov <petkan@users.sourceforge.net> Cc: Steve Glendinning <steve.glendinning@smsc.com> Cc: Christian Lamparter <chunkeey@googlemail.com> Cc: "John W. Linville" <linville@tuxdriver.com> Cc: Dan Williams <dcbw@redhat.com> Cc: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Cc: Ivo van Doorn <IvDoorn@gmail.com> Cc: Gertjan van Wingerde <gwingerde@gmail.com> Cc: Helmut Schaa <helmut.schaa@googlemail.com> Cc: Herton Ronaldo Krzesinski <herton@canonical.com> Cc: Hin-Tak Leung <htl10@users.sourceforge.net> Cc: Larry Finger <Larry.Finger@lwfinger.net> Cc: Chaoming Li <chaoming_li@realsil.com.cn> Cc: Lucas De Marchi <lucas.demarchi@profusion.mobi> Cc: "David S. Miller" <davem@davemloft.net> Cc: Roel Kluin <roel.kluin@gmail.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Jiri Pirko <jpirko@redhat.com> Cc: Pavel Roskin <proski@gnu.org> Cc: Yoann DI-RUZZA <y.diruzza@lim.eu> Cc: George <george0505@realtek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* carl9170: add NEC WL300NU-AG usbidChristian Lamparter2011-07-05
| | | | | | | Cc: stable@kernel.org Reported-by: Mark Davis Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* Fix common misspellingsLucas De Marchi2011-03-31
| | | | | | Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
* carl9170: add Airlive X.USB a/b/g/n USBIDJan Puk2011-02-25
| | | | | | | | | "AirLive X.USB now works perfectly under a Linux environment!" Cc: <stable@kernel.org> Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* carl9170: fix usb pm suspend->resume woesChristian Lamparter2011-01-04
| | | | | | | | | | | | | | | | | | This patch revamps some common code-paths which are shared between (re-)initialization and suspend/resume subroutines. It also adds some helpful comments about quirks and associated difficulties. It's quite big, but it should fix #25382: <https://bugzilla.kernel.org/show_bug.cgi?id=25382> And hopefully the code is robust enough to deal with all possible suspend/resume scenarios without requiring the user to do any sort of manual and possibly dangerous work. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* wireless: Remove unnecessary casts of usb_get_intfdataJoe Perches2010-12-02
| | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* Merge branch 'master' of ↵John W. Linville2010-11-24
|\ | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
| * carl9170: fix usb anchor wait timeoutChristian Lamparter2010-11-15
| | | | | | | | | | | | | | | | usb_wait_anchor_empty_timeout's @timeout wants milliseconds and not jiffies. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * carl9170: usbid table updatesChristian Lamparter2010-11-08
| | | | | | | | | | | | | | | | | | | | This patch includes the following updates: * add D-Link DWA-130 Rev D * Netgear has three WNDA3100 versions. the original WNDA3100 is now called WNDA3100v1. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | carl9170: fix spurious restart due to high latencyChristian Lamparter2010-11-15
|/ | | | | | | | | | | | | | RX Stress tests of unidirectional bulk traffic with bitrates of up to 220Mbit/s have revealed that the fatal-event recovery logic [which was solely triggered by an out-of-rx-buffer situation] is too aggressive. The new method now "pings" the device and then decides - based on the response - whenever a restart is needed or not. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* carl9170: fix async command buffer leakChristian Lamparter2010-10-25
| | | | | | | | | | If __carl9170_exec_cmd fails to upload an asynchronous command to the device, the functions: carl9170_reboot and carl9170_powersave will leak the temporary command assembly buffer. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* carl9170: interrupt urbs must not set URB_ZERO_PACKETChristian Lamparter2010-09-28
| | | | | | | | | | | | | This patch fixes a bug in the driver which was exposed by CONFIG_USB_DEBUG: "usb 1-1.6.3: BOGUS urb flags, 40 --> 0" The transfer flag "URB_ZERO_PACKET" is only valid for bulk urbs. Reported-by: André Erdmann Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* carl9170: fix state downgrade during resetChristian Lamparter2010-09-21
| | | | | | | | | | | | | | Don't mark the device as completely dead just yet. If all goes to plan and carl9170_reboot succeeds then we can skip the expensive userspace-driven reinitialization anyway. And if it doesn't and carl9170_reboot fails, then carl9170_usb_cancel_urbs will do the necessary steps. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* carl9170: abort tasklet during usb resetChristian Lamparter2010-09-21
| | | | | | | | | This patch prevents the tasklet code from interfering while the firmware is down for an unscheduled maintenance. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* carl9170: 802.11 rx/tx processing and usb backendChristian Lamparter2010-09-14
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>