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path: root/drivers/net/wireless/b43/main.c
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* b43: Fix Bugzilla #14181 and the bug from the previous 'fix'Larry Finger2009-10-27
| | | | | | | | | | | | | | | "b43: Fix PPC crash in rfkill polling on unload" fixed the bug reported in Bugzilla No. 14181; however, it introduced a new bug. Whenever the radio switch was turned off, it was necessary to unload and reload the driver for it to recognize the switch again. This patch fixes both the original bug in #14181 and the bug introduced by the previous patch. It must be stated, however, that if there is a BCM4306/3 with an rfkill switch (not yet proven), then the driver will need an unload/reload cycle to turn the device back on. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Fix PPC crash in rfkill polling on unloadLarry Finger2009-10-07
| | | | | | | | | | | | In Bugzilla No. 14181, a PowerMac G4 crashes on ifdown or module unload because the rfkill polling has not been stopped. For the x86 architectures, the attempt to reach a now unmapped register is not fatal as it is on PPC. (Includes "b43: Fix locking problem when stopping rfkill polling". -- JWL) Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Protect sanity check against physical device removalMichael Buesch2009-10-07
| | | | | | | | Fix IRQ mask sanity check for physically pulled device. Tested-by: Andrew Price <andy@andrewprice.me.uk> Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Don't use struct wldev after detach.Michael Buesch2009-10-07
| | | | | | | Don't use struct wldev after detach. This fixes an oops on access. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* Merge branch 'master' of ↵David S. Miller2009-09-23
|\ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 Conflicts: drivers/net/wireless/iwlwifi/iwl-rx.c
| * b43: fix build error if !CONFIG_B43_LEDSAlbert Herranz2009-09-23
| | | | | | | | | | | | | | | | | | | | | | | | | | Fix the following build error when CONFIG_B43_LEDS is not selected: drivers/net/wireless/b43/main.c: In function 'b43_remove': drivers/net/wireless/b43/main.c:4990: error: 'struct b43_leds' has no member named 'stop' drivers/net/wireless/b43/main.c:4991: error: 'struct b43_leds' has no member named 'work' make[4]: *** [drivers/net/wireless/b43/main.o] Error 1 Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * b43: Don't abuse wl->current_dev in the led workMichael Buesch2009-09-23
| | | | | | | | | | | | | | | | | | | | Don't abuse wl->current_dev in the LED work for checking whether we're going down. Add an explicit variable. This fixes a crash on rmmod dereferencing the wl->current_dev NULL pointer in various other places of the driver. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * b43: Disable PMQ mechanismMichael Buesch2009-09-23
| | | | | | | | | | | | | | | | This reduces IRQ pressure by about one third on a saturated link by disabling the PMQ mechanism. We currently don't use that mechanism. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * b43: Add optional verbose runtime statisticsMichael Buesch2009-09-23
| | | | | | | | | | | | | | | | | | | | This adds support for verbose runtime statistics. It defaults to off and must be enabled in debugfs, if desired. The first measurement may be incorrect, because statistics are not cleared after they got enabled through debugfs. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * b43: Fix IRQ sync for SDIOMichael Buesch2009-09-23
| | | | | | | | | | | | | | | | synchronize_irq is meaningless for SDIO. sdio_release_irq will sync the IRQ thread for us. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * b43: Fix SDIO interrupt handler deadlockMichael Buesch2009-09-23
| | | | | | | | | | | | | | We need to release the SDIO host before locking the driver mutex. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * b43: Add Soft-MAC SDIO device supportAlbert Herranz2009-09-23
| | | | | | | | | | | | | | | | | | | | This adds support for Soft-MAC SDIO devices to b43. The driver still lacks some fixes for SDIO devices, so it's currently marked as BROKEN. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * b43: Rewrite suspend/resume codeMichael Buesch2009-09-23
| | | | | | | | | | | | | | | | | | This removes most of the b43 suspend/resume code (it's handled by mac80211) and moves the registration of devices to the attachment phase. This is required, because we must not register/unregister devices on suspend/resume. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * b43: Fix resume failureMichael Buesch2009-09-23
| | | | | | | | | | | | | | | | | | | | | | | | This fixes a resume failure where a signal is pending on resume so the firmware upload fails. This removes the interruptible sleep, because we don't really need it. In the worst case (with broken firmware) the sleep loop will take 1 second. In the common case (working firmware), it will only take a few milliseconds. So we don't really need to be interruptible. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * b43: Force-wake queues on initMichael Buesch2009-09-23
| | | | | | | | | | | | | | | | | | Force wake the mac80211 queues on init. Under rare circumstances they may be stopped, if a DMA error or something else causes a device reset while a queue was stopped. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | b43: Fix resume failureMichael Buesch2009-09-14
| | | | | | | | | | | | | | | | | | | | | | | | This fixes a resume failure where a signal is pending on resume so the firmware upload fails. This removes the interruptible sleep, because we don't really need it. In the worst case (with broken firmware) the sleep loop will take 1 second. In the common case (working firmware), it will only take a few milliseconds. So we don't really need to be interruptible. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | b43: Force-wake queues on initMichael Buesch2009-09-14
|/ | | | | | | | | Force wake the mac80211 queues on init. Under rare circumstances they may be stopped, if a DMA error or something else causes a device reset while a queue was stopped. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b44/b43/b43legacy: Fix switch warnings introduced by SSB-SDIOMichael Buesch2009-09-09
| | | | | | | This fixes some gcc warnings for switch statements. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Really disable QoS, if requestedMichael Buesch2009-09-09
| | | | | | | | | | | Currently, when QoS-disable is requested, we would leave QoS enabled in firmware, but only queue frames on one queue. Change that and also tell firmware about disabled QoS, so it completely ignores all the QoS parameters. Also don't upload the parameters, if QoS is disabled. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: remove SHM spinlockMichael Buesch2009-09-08
| | | | | | | | | This removes the SHM spinlock. SHM is protected by wl->mutex. Signed-off-by: Michael Buesch <mb@bu3sch.de> Tested-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Remove PIO RX workqueueMichael Buesch2009-09-08
| | | | | | | | | This removes the PIO RX work. It's not needed anymore, because we can sleep in the threaded interrupt handler. Signed-off-by: Michael Buesch <mb@bu3sch.de> Tested-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Remove TX spinlockMichael Buesch2009-09-08
| | | | | | | | | This removes the TX spinlock and defers TX to a workqueue to allow locking wl->mutex instead and to allow sleeping for register accesses. Signed-off-by: Michael Buesch <mb@bu3sch.de> Tested-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Use a threaded IRQ handlerMichael Buesch2009-09-08
| | | | | | | | | | | | Use a threaded IRQ handler to allow locking the mutex and sleeping while executing an interrupt. This removes usage of the irq_lock spinlock, but introduces a new hardirq_lock, which is _only_ used for the PCI/SSB lowlevel hard-irq handler. Sleeping busses (SDIO) will use mutex instead. Signed-off-by: Michael Buesch <mb@bu3sch.de> Tested-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Fix typo in modparam_btcoex descriptionGábor Stefanik2009-08-31
| | | | | Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Add myself to module authors & to LP-PHY file copyright noticesGábor Stefanik2009-08-31
| | | | | | | | Also mark the LP-PHY driver "802.11a/g" instead of "802.11g", as LP-PHY is capable of both 2GHz and 5GHz operation. Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Implement antenna diversity support for LP-PHYGábor Stefanik2009-08-28
| | | | | | | | | | The A/G-PHY changes are fallout fixes from the enum change, which in turn allows the LP-PHY code to be much simpler. The antenna_to_phyctl change is a fix for a potential existing bug that this patch may otherwise trigger. Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: add hardware tkipgregor kowski2009-08-20
| | | | | | | | This add hardware tkip for b43. Signed-off-by: Gregor Kowski <gregor.kowski@gmail.com> Acked-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: allow configure_filter callback to sleepJohannes Berg2009-08-20
| | | | | | | | | | | | | | | | | | | | | Over time, a whole bunch of drivers have come up with their own scheme to delay the configure_filter operation to a workqueue. To be able to simplify things, allow configure_filter to sleep, and add a new prepare_multicast callback that drivers that need the multicast address list implement. This new callback must be atomic, but most drivers either don't care or just calculate a hash which can be done atomically and then uploaded to the hardware non-atomically. A cursory look suggests that at76c50x-usb, ar9170, mwl8k (which is actually very broken now), rt2x00, wl1251, wl1271 and zd1211 should make use of this new capability. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: LP-PHY: Remove BROKEN from B43_PHY_LPGábor Stefanik2009-08-20
| | | | | | | | | | | Larry has reported success getting scan data with an LP-PHY device, so it's probably time to release LP-PHY support for testing. Also disable 802.11a support for now, as 802.11a currently causes the driver to panic on startup (NULL pointer dereference). Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Make LP-PHY testableGábor Stefanik2009-08-20
| | | | | | | | | -Enable rate memory init for LP-PHY (same as G and N-PHY). -Mark rev.2 LP-PHYs with the B2063 radio as supported. -Allow using the 5GHz band on LP-PHYs. Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Add LP-PHY firmware loading supportGábor Stefanik2009-08-20
| | | | | | | Add support for loading LP-PHY firmware to b43_try_request_fw. Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Update dummy transmission to match V4 specsGábor Stefanik2009-08-20
| | | | | | | | The V4 dummy transmission has two extra bools in its prototype, so update all callers with the 2 bools. Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Fix hardware key index handlingMichael Buesch2009-08-14
| | | | | | | | | This fixes the hardware encryption keys index and array size handling. Thanks to Gregor Kowski for reporting this issue. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: remove wrong probe_resp_plcp writegregor kowski2009-08-14
| | | | | | | | | | | The tkip hw support uncovered a bug in b43_write_probe_resp_template : it is writing at the wrong shm offset, it is in the B43_SHM_SH_TKIPTSCTTAK zone. Remove b43_write_probe_resp_template, b43_write_probe_resp_plcp and b43_write_probe_resp_plcp because the probe response offload is currently not supported by mac80211. Signed-off-by: Gregor Kowski <gregor.kowski@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: remove wrong probe_resp_plcp writegregor kowski2009-08-04
| | | | | | | | | | The tkip hw support uncovered a bug in b43_write_probe_resp_template : it is writing at the wrong shm offset, it is in the B43_SHM_SH_TKIPTSCTTAK zone. This patch comments these writes. Signed-off-by: Gregor Kowski <gregor.kowski@gmail.com> Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Fix unaligned 32bit SHM-shared accessMichael Buesch2009-08-04
| | | | | | | | | | | This fixes unaligned 32bit SHM-shared read/write access. The low and high 16 bits were swapped. It also adds a testcase for this to the chipaccess validation. (Thanks to Albert Herranz for tracking down this bug.) Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: redefine usage of the mac80211 workqueueLuis R. Rodriguez2009-08-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The mac80211 workqueue exists to enable mac80211 and drivers to queue their own work on a single threaded workqueue. mac80211 takes care to flush the workqueue during suspend but we never really had requirements on drivers for how they should use the workqueue in consideration for suspend. We extend mac80211 to document how the mac80211 workqueue should be used, how it should not be used and finally move raw access to the workqueue to mac80211 only. Drivers and mac80211 use helpers to queue work onto the mac80211 workqueue: * ieee80211_queue_work() * ieee80211_queue_delayed_work() These helpers will now warn if mac80211 already completed its suspend cycle and someone is trying to queue work. mac80211 flushes the mac80211 workqueue prior to suspend a few times, but we haven't taken the care to ensure drivers won't add more work after suspend. To help with this we add a warning when someone tries to add work and mac80211 already completed the suspend cycle. Drivers should ensure they cancel any work or delayed work in the mac80211 stop() callback. Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* wireless: remove print_mac usesJohannes Berg2009-07-24
| | | | | | | | | Use %pM instead, and also remove stray variables declared with DECLARE_MAC_BUF. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Kalle Valo <kalle.valo@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43/b43legacy: fix radio LED initializationLarry Finger2009-07-07
| | | | | | | | | | | | | | Fix condition in which radio LED did not initialize correctly, and remove 4 compilation warnings. After the recent changes in rfkill, the radio LED used by b43/b43legacy did not always initialize correctly. Both b43 and b43legacy used the deprecated variable radio_enabled in struct ieee80211_conf. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Add fw capabilitiesMichael Buesch2009-06-10
| | | | | | | | | | | Add automagic feature flags, so the firmware can tell the driver about supported features and the driver can switch features on/off as needed. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: Stefan Lippers-Hollmann <s.l-h@gmx.de> Tested-by: Stefan Lippers-Hollmann <s.l-h@gmx.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43/legacy: port to cfg80211 rfkillJohannes Berg2009-06-10
| | | | | | | | | | This ports the b43/legacy rfkill code to the new API offered by cfg80211 and thus removes a lot of useless stuff. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Cc: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rfkill: rewriteJohannes Berg2009-06-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch completely rewrites the rfkill core to address the following deficiencies: * all rfkill drivers need to implement polling where necessary rather than having one central implementation * updating the rfkill state cannot be done from arbitrary contexts, forcing drivers to use schedule_work and requiring lots of code * rfkill drivers need to keep track of soft/hard blocked internally -- the core should do this * the rfkill API has many unexpected quirks, for example being asymmetric wrt. alloc/free and register/unregister * rfkill can call back into a driver from within a function the driver called -- this is prone to deadlocks and generally should be avoided * rfkill-input pointlessly is a separate module * drivers need to #ifdef rfkill functions (unless they want to depend on or select RFKILL) -- rfkill should provide inlines that do nothing if it isn't compiled in * the rfkill structure is not opaque -- drivers need to initialise it correctly (lots of sanity checking code required) -- instead force drivers to pass the right variables to rfkill_alloc() * the documentation is hard to read because it always assumes the reader is completely clueless and contains way TOO MANY CAPS * the rfkill code needlessly uses a lot of locks and atomic operations in locked sections * fix LED trigger to actually change the LED when the radio state changes -- this wasn't done before Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> [thinkpad] Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* wireless: move some utility functions from mac80211 to cfg80211Zhu Yi2009-05-22
| | | | | | | | | | | The patch moves some utility functions from mac80211 to cfg80211. Because these functions are doing generic 802.11 operations so they are not mac80211 specific. The moving allows some fullmac drivers to be also benefit from these utility functions. Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: Samuel Ortiz <samuel.ortiz@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43/legacy: fix beacon change processingJohannes Berg2009-05-20
| | | | | | | | | | Process beacon change even if the BSSID doesn't change at the same time. Also fix what I think is a small locking error in b43legacy, there's a spin_unlock_irqrestore that looks out of place. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: unify config_interface and bss_info_changedJohannes Berg2009-05-06
| | | | | | | | | | | The config_interface method is a little strange, it contains the BSSID and beacon updates, while bss_info_changed contains most other BSS information for each interface. This patch removes config_interface and rolls all the information it previously passed to drivers into bss_info_changed. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: clean up beacon interval settingsJohannes Berg2009-05-06
| | | | | | | | | | | | | | | | | | | | We currently have two beacon interval configuration knobs: hw.conf.beacon_int and vif.bss_info.beacon_int. This is rather confusing, even though the former is used when we beacon ourselves and the latter when we are associated to an AP. This just deprecates the hw.conf.beacon_int setting in favour of always using vif.bss_info.beacon_int. Since it touches all the beaconing IBSS code anyway, we can also add support for the cfg80211 IBSS beacon interval configuration easily. NOTE: The hw.conf.beacon_int setting is retained for now due to drivers still using it -- I couldn't untangle all drivers, some are updated in this patch. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Remove unnecessary MMIO in interrupt hotpathMichael Buesch2009-04-22
| | | | | | | This removes unnecessary MMIO accesses in the interrupt hotpath. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Do not "select" HW_RANDOMMichael Buesch2009-04-22
| | | | | | | | Auto-depend on HW_RANDOM, rather than "select"ing it. This way the user has the choice to enable or disable HWRNG support. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Do radio lock assertion in softwareMichael Buesch2009-04-16
| | | | | | | | | | The assertion of the lock-bit in the hardware register is unreliable, because there are devices with quirks that will randomly set the bit. Do the assertion in software, only. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Mask PHY TX error interrupt, if not debuggingMichael Buesch2009-03-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This masks the PHY TX error interrupt, if debugging is disabled. Currently we have a bug somewhere which triggers this interrupt once in a while. (Depends on the network noise/quality). While this is nonfatal, it scares the hell out of users and we frequently receive bugreports that incorrectly identify this error message as the reason. There's another problem with this. The PHY TX error interrupt is protected with a watchdog that will restart the device if it keeps triggering very often. This is used to fix interrupt storms from completely broken devices. However, this watchdog might trigger in completely normal operation. If the TX capacity of the card is saturated, the likeliness of the watchdog triggering increases, as more TX errors occur. The current threshold for the watchdog is 1000 errors in 15 seconds. This patch adds a workaround for the issue by just enabling the interrupt if debugging is disabled (by Kconfig or by modparam). This has the downside that real fatal PHY TX errors are not caught anymore. But this is nonfatal due to the following reasons: * If the card is not able to transmit anymore, MLME will notice anyway. * I did _never_ see a real fatal PHY TX error in a mainline b43 driver. * It does _not_ result in interrupt storms or something like that. It will simply result in a stalled card. It can be debugged by enabling the debugging module parameter. Signed-off-by: Michael Buesch <mb@bu3sch> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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