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2010-09-14iwlwifi: do not force complete scan too earlyStanislaw Gruszka
Currently we force scan complete at the end of iwl_scan_cancel_timeout function. This cause race condition when we can get a new scan request from mac80211 and complete it by iwl_bg_complete from older scan. Change code to force scan complete only when really needed: device goes down, interface is removed or scan timeout occurs. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Wey-Yi W Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14iwlwifi: assure we complete scan in scan_abort and scan_check worksStanislaw Gruszka
Assure we complete scan in mac80211 when we abort scanning (scan_abort work) or scan timeout occurs (scan_check work). Currently iwl_scan_cancel_timeout() procedure force scan finish in mac80211 at the end of timeout loop, so we can use it in proper work functions. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14iwlwifi: force scan complete after timeoutStanislaw Gruszka
If we do not get notification from hardware about scan complete, after timeout do mac80211 scan completion anyway. This assure we end scan in case of firmware hung. Patch fix one of the causes of wdev_cleanup_work warning reported at https://bugzilla.redhat.com/show_bug.cgi?id=593566 Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Wey-Yi W Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14iwlwifi: rewrite scan completionStanislaw Gruszka
Assure (partially) we call ieee80211_scan_completed() only once when scan was requested from mac80211. Code path that first clear STATUS_SCANNING bit is responsible to call ieee80211_scan_completed(). Before the call, we check if mac80211 really request the scan. Still persist some cases when we behave wrong, that will be addressed in the next patches. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Wey-Yi W Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14iwlwifi: rework iwl_scan_cancel_timeoutStanislaw Gruszka
Since on timeout version of iwl_scan_cancel procedure we can sleep, do not have to schedule abort_scan work to begin and perform scanning, can do this directly. Also now, as we do not queue abort_scan from restart work anymore, we can queue abort_scan to priv->workqueue. Don't drop mutex when waiting for scan complete. Use STATUS_HW_SCAN bit to check if scanning is currently pending, because STATUS_SCANNING will be cleared only with priv->mutex taken. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Wey-Yi W Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14iwlwifi: report scan completion when abort failStanislaw Gruszka
When we are not able to send abort command to firmware, notify mac80211 that we complete scan, as we will newer do it lately. Check for all possible errors that low level sending command procedure does not check, to assure we catch all failures cases. Patch fix one of the causes of wdev_cleanup_work warning reported at https://bugzilla.redhat.com/show_bug.cgi?id=593566 Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Wey-Yi W Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14iwlwifi: cancel scan when down the deviceStanislaw Gruszka
Always cancel scan when stooping device and scan is currently pending, we should newer have scan running after down device. To assure we start scan cancel from restart work we have to schedule abort_scan to different workqueue than priv->workqueue. Patch fix not cancel scanning when restarting firmware, what is one of the causes of wdev_cleanup_work warning (together with permanent network connection lost) reported at https://bugzilla.redhat.com/show_bug.cgi?id=593566 Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Wey-Yi W Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14iwlwifi: move scan completed flags handlingJohannes Berg
Move the scan completed flags handling so that we can notify mac80211 about aborted scans with the correct status. Also queue the scan_completed work before the BT status update so that it won't see the bits still set (unless a new scan was started in which case that's fine.) Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Wey-Yi W Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14iwlwifi: unify scan start checksJohannes Berg
Rather than duplicating all the checks and even in case of errors accepting the scan request from mac80211, we can push the checks to the caller and in all error cases reject the scan request right away (rather than accepting and then saying it was aborted). Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Wey-Yi W Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14iwlwifi: remove unused conf variablesJohannes Berg
There are a number of conf variables that are unused, remove them. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Wey-Yi W Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14mac80211: Fix dangling pointer in ieee80211_xmitSteve deRosier
hdr pointer is left dangling after call to ieee80211_skb_resize. This can cause guards around mesh path selection to fail. Signed-off-by: Steve deRosier <steve@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14nl80211: Uninitialized variableBill Jordan
There is a path in nl80211_set_wiphy where result is tested but uninitialized. I am hitting this path when I attempt: sh# iw dev wlan0 set channel 10 command failed: Unknown error 1069727332 (-1069727332) Signed-off-by: William Jordan <bjordan@rajant.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14net/wireless: use ARRAY_SIZE macro in radiotap.cNikitas Angelinas
Replace sizeof(rtap_namespace_sizes) / sizeof(rtap_namespace_sizes[0]) with ARRAY_SIZE(rtap_namespace_sizes) in net/wireless/radiotap.c Signed-off-by: Nikitas Angelinas <nikitasangelinas@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14drivers/net/wireless/ath/ath9k: use ARRAY_SIZE macro in ani.cNikitas Angelinas
Replace (sizeof(ofdm_level_table)/sizeof(ofdm_level_table[0]) with ARRAY_SIZE(ofdm_level_table), and (sizeof(cck_level_table)/ sizeof(cck_level_table[0]) with ARRAY_SIZE(cck_level_table) in drivers/net/wireless/ath/ath9k/ani.c Signed-off-by: Nikitas Angelinas <nikitasangelinas@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14ath5k: avoid unneeded calibration error messagesFabio Rossi
Don't generate calibration errors messages when not needed. Signed-off-by: Fabio Rossi <rossi.f@inwind.it> Acked-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14rt2x00: fix oops in rt2x00lib_txdone with rt61pciHelmut Schaa
Fix a typo introduced in "rt2x00: Add helper function for reporting tx status" that results in an oops in rt2x00lib_txdone. Reported-by: Pavel Roskin <proski@gnu.org> Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Acked-by: Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14rt2x00: Enable missing interrupts in rt61pciHelmut Schaa
We're handling both, the CSR_BEACON_DONE and the CSR_TWAKEUP interrupts in rt61pci. However, these interrupts are masked out by default. Fix this. Found via pure code inspection. Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14rt2x00: Mask out unused interrupts in rt2800pciHelmut Schaa
We don't use all available interrupts in rt2800pci. Mask out all unused interrupts to avoid waking up without having anything to do. Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14rt2x00: Check for specific changed flags when updating the erp configHelmut Schaa
Previously rt2x00 was always updating all erp related config variables even though mac80211 might only have changed one. Hence, pass the changed flags to the config_erp driver callback so that the driver can limit the changes to the correct values. This fixes an issue in AP mode where the beacon interval is not initialized (and thus zero) but still sent to the hardware causing an interrupt storm on rt2800pci hanging the system. Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14rt2x00: Initialize AMPDU_BA_WINSIZE registerHelmut Schaa
Since we're not using the AMPDU_BA_WINSIZE register to force the BlockAck window size (we specify it in every TXWI) we should initialize it to 0. Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14rt2x00: Antenna diversity does not work in 2.6.35Lars Ericsson
The test if antenna diversity is at all enabled uses a local variable 'flags' to prepare the test condition, but uses 'ant->flags' when the test is evaluated. The effect is that the diversity evaluation will never start. I can see two solutions, use the 'flag' in the test condition or revert the local flag change. My attached patch took alternative two. Then the evaluation start but it will still not switch antenna. The problem is a code section in rt2x00lib_config_antenna (). The effect of that code section is that any change the diversity function perform will be effectively shorten and no antenna selection command issued. The attached patch will filter out any ANTENNA_SW_DIVERSITY setting but forward all other Signed-off-by: Lars Ericsson <lars_ericsson@telia.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14ath9k_hw: Support fastcc for AR7010Rajkumar Manoharan
To reduce scan time, enable fastcc for AR7010 (fastcc == fast channel change -- JWL) Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14wl1271: sdio: claim host only when doing IOOhad Ben-Cohen
Do not maintain a persistent sdio_claim_host state. Instead, claim host before doing IO and release host soon after. This fixes several mmc deadlock scenarios, e.g. during suspend/resume. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: Luciano Coelho <luciano.coelho@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14carl9170: Makefile, Kconfig files and MAINTAINERSChristian Lamparter
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14carl9170: firmware parser and debugfs codeChristian Lamparter
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14carl9170: 802.11 rx/tx processing and usb backendChristian Lamparter
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14carl9170: PHY/RF and MAC routinesChristian Lamparter
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14carl9170: Register maps, tx/rx descriptor formats and eeprom layoutChristian Lamparter
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-14carl9170: mac80211 glue and command interfaceChristian Lamparter
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-11iwlwifi: remove code repetitionWey-Yi Guy
Move the duplicated code into single static function. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2010-09-11iwlwifi: make sure runtime calibration is enabled after associationWey-Yi Guy
Clear the "start calib" flag only for new association, The flag will be set in post_associate function to trigger the runtime calibration. Set this flag to "0" will stop the runtime sensitivity calibration Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2010-09-11iwlwifi: fix and describe iwl_adjust_beacon_intervalJohannes Berg
The iwl_adjust_beacon_interval function is a bit of black magic, so add comments to it describing what it does. Also, in the case when there's no beacon interval set, program the default into the device (instead of adjusting, which results in the max) since using the max in that case interacts badly with dual-mode/PAN parameters. Also update the PAN parameters accordingly and use the same constant as here. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2010-09-11iwlwifi: improve timing handling with dual-modeJohannes Berg
In dual-mode, a number of scenarios need to be considered, and the firmware can be very picky about them. Adjust the timing (most importantly the beacon interval) according to the different modes. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2010-09-11iwlwifi: avoid sending too many commandsJohannes Berg
When the PAN context is unused, there's no need to continually update it in the device. So track which contexts are active (with the special case that the WLAN context is always active ...) and only send their commands to the device when needed. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2010-09-11iwlwifi: allow configure protection modeWey-Yi Guy
Even driver use rts/cts protection mode for aggregation packets by default. Allow the protection mode to be configure through debugfs Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2010-09-11iwlwifi: implement beacon interval changeJohannes Berg
When the beacon interval needs to be changed, all we need to do is send updated timing to the device. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2010-09-11iwlwifi: fix PAN parameters while scanningJohannes Berg
When only the PAN side was active, we gave no time to the WLAN context, which is OK unless we are scanning, which always happens on the WLAN context. Fix this. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2010-09-11iwlwifi: remember the last uCode sysassert error codeWey-Yi Guy
When sysassert happen, uCode will report the error code, driver dump the information to dmesg. Here also remember the last error code for future reference. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2010-09-11iwlwifi: fix default LQ table in 5.2 bandTomas Winkler
The default LQ is filled decreasingly using iwl_get_prev_ieee_rate from a starting rate. Since the starting rate is already the lowest one for a specific band it should be actually filled evenly with the starting rate: 1M and 6M for 5.2GHZ and 2.4GH respectively. The bug is that for for A or G-only it decreases to CCK rates which are not supported. iwl_get_prev_ieee_rate function is just not band aware. This affects broadcast station which lq table is not updated by rs algorithm G-only scenario is not treated by this patch iwl_get_prev_ieee_rate is removed completely as it is not used in other contexts Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2010-09-07drivers/net/wireless/iwlwifi/iwl-agn.c: Fix return value from an unsigned ↵Julia Lawall
function The function has an unsigned return type, but returns a negative constant to indicate an error condition. Another error condition in the same function is indicated by returning 0, and indeed the only call to the function checks for 0 to detect errors, so the return of a negative value it converted to a return of 0. A sematic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @exists@ identifier f; constant C; @@ unsigned f(...) { <+... * return -C; ...+> } // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-07p54spi: Add error message for eeprom failureMichael Büsch
This adds an error message for the eeprom request failure case. This way it's easier for the user to figure out what went wrong. Signed-off-by: Michael Büsch <mb@bu3sch.de> Acked-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-07ath9k_hw: Restore ANI registers to default during partial reset for AR9271Rajkumar Manoharan
For AR9271 chips, if partial reset is done while scanning, the cycpwrThr1 will be set to maximum. This causes the degrade in DL throughput. So restore the ANI registers to default during the partial reset. Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-07ath9k_htc: Enable fastcc for HTC devices.Rajkumar Manoharan
By enabling fastcc, the scan time reduced to half. Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-07ath9k: Implement an algorithm for Antenna diversity and combiningVasanthakumar Thiagarajan
This algorithm chooses the best main and alt lna out of LNA1, LNA2, LNA1+LNA2 and LNA1-LNA2 to improve rx for single chain chips(AR9285). This would greatly improve rx when there is only one antenna is connected with AR9285. Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-07ath9k_hw: Add functions to get/set antenna diversity configurationVasanthakumar Thiagarajan
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-07ath9k_hw: Add capability flag for Antenna diversity and combining featureVasanthakumar Thiagarajan
This is enabled only for ar9285. Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-07airo: make strings constStephen Hemminger
Make read/only data structures const. Compile tested only. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-07ray_cs: make data constStephen Hemminger
Make the startup and other data parameters that are read/only const. Compile tested only. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-03iwlagn: open/close envlope to force move BT state machineWey-Yi Guy
In uCode, BT state machine need to receive open envlope command before perform calibration; followed by close envlope command to move to next stage. Since Linux has two separated uCode, one for init and the second one for runtime; we use open envlope commands for init uCode to indicate we are ready to perform calibration operation. But for runtime uCode, we are not doing any init calibration, so we issue open/close envlope commands to force uCode move to "BT COEX ON" state. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2010-09-01mac80211: only cancel software-based scans on suspendJohn W. Linville
Otherwise the hardware scan handler could access an invalid scan request structure. The driver should cancel any pending hardware scans during the suspend process anyway, so also add a warning if the hardware scan is still pending when the device resumes. Signed-off-by: John W. Linville <linville@tuxdriver.com>
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