- 16 Apr, 2010 21 commits
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Johannes Berg authored
The flag name is a little misleading, this flag instructs the device to ignore bluetooth messages for purposes of frame transmissions, so rename the flag to TX_CMD_FLG_IGNORE_BT. Signed-off-by:
Johannes Berg <johannes.berg@intel.com> Signed-off-by:
Reinette Chatre <reinette.chatre@intel.com>
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Johannes Berg authored
Some future hardware will require a different command to be sent for bluetooth coexist, so make this a virtual method that can be changed on a per-device basis. Signed-off-by:
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Wey-Yi Guy authored
Since multiple new devices having similar uCode architecture and use same registers address, remove more reference to 5000 series to eliminate the confusion. Signed-off-by:
Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by:
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Wey-Yi Guy authored
Perform sanity check for turn on aggregation tid. Also remove the option for turn on all the aggregation tids at once since it is deprecated function and not being used. Signed-off-by:
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Wey-Yi Guy authored
For 6000g2 series of NICs, PA type is determined by uCode, driver do not have to set the register for internal/external PA. It is a workaround just for 6000 series NICs. Signed-off-by:
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Wey-Yi Guy authored
Add hardware revision for 6000g2 series of NIC Signed-off-by:
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Shanyu Zhao authored
This function is called twice in a row, remove the second one. Signed-off-by:
Shanyu Zhao <shanyu.zhao@intel.com> Signed-off-by:
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Abhijeet Kolekar authored
Seperate debugfs functions into iwlagn specific debugfs file and Add debugfs ops to iwlwifi. Signed-off-by:
Abhijeet Kolekar <abhijeet.kolekar@intel.com> Signed-off-by:
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Wey-Yi Guy authored
Use the show uCode statistics function for uCode debugging purposes only; it is being duplicated in both debugfs and sysfs. remove the one from sysfs. Signed-off-by:
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Shanyu Zhao authored
This patch is to bring up 6000 Series 2x2 AGN Gen2 adapters. Seperate various version numbers from 6000 Series definitions; Add module firmware declaration for the new adapters; Add additional device IDs and subsystem IDs; Signed-off-by:
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Wey-Yi Guy authored
Some definition for eeprom apply to more than 5000 series device, change the name to reflect it for easy reading. Signed-off-by:
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Johannes Berg authored
Scan requesting doesn't need to be asynchronous since all code paths leading up to it can sleep. Make the scan request a new util operation that is hw-specific (to account for 3945 vs. agn) and call it right in place. This patch moves a lot of code into iwlagn as it need not be in iwlcore. Signed-off-by:
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Johannes Berg authored
I keep checking what "priv->scan" is, so rename it to "priv->scan_cmd" which more clearly tells us what it is. Signed-off-by:
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Johannes Berg authored
Since we no longer do a multi-pass scan, keeping track of how long each pass took is pointless since there will only be one. Signed-off-by:
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Johannes Berg authored
This logic is just confusing, if anything it belongs into mac80211. Also, even if we do scan during the EAPOL handshake, that will not cause any problems, just a short delay. Signed-off-by:
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Johannes Berg authored
With atomic bitops, test_and_{set,clear}_bit should be used instead of separate test_bit and set_bit/clear_bit. Signed-off-by: -
Johannes Berg authored
Since mac80211 will now never request scanning multiple bands, we can remove all the associated logic and scan a single band only in each scan. Signed-off-by:
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Wey-Yi Guy authored
Even the initial single/dual stream values will be overridden later when issue link quality command; but still make sense not to use hard-code value during initialization. Single/Dual stream mask are used to indicate the best antenna for SISO/MIMO; different NIC has different tx antenna configuration; so the parameter need to based on the valid tx antenna. 1x2 device: single tx antenna available, only SISO is valid configuration, but still need to set up MIMO configuration, so set it up with antenna A & B as default. 2x2 device: two tx antenna available, dual_stream will use both valid antenna. 3x3 device: three tx antenna available, skip the first antenna and choice the second and third antenna for dual_stream. Signed-off-by:
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Reinette Chatre authored
Conflicts: drivers/net/wireless/iwlwifi/iwl-6000.c
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Shanyu Zhao authored
For 6000 series, the 2.4G HT40 band regulatory settings address in EEPROM was off by 2. Before the fix, you'll see this in dmesg: [79535.788877] ieee80211 phy8: U iwl_mod_ht40_chan_info HT40 Ch. 7 [2.4GHz] WIDE (0x61 0dBm): Ad-Hoc not supported [79535.788880] ieee80211 phy8: U iwl_mod_ht40_chan_info HT40 Ch. 11 [2.4GHz] WIDE (0x61 0dBm): Ad-Hoc not supported And after the fix: [91132.688706] ieee80211 phy14: U iwl_mod_ht40_chan_info HT40 Ch. 7 [2.4GHz] IBSS ACTIVE WIDE (0x6f 0dBm): Ad-Hoc supported [91132.688709] ieee80211 phy14: U iwl_mod_ht40_chan_info HT40 Ch. 11 [2.4GHz] IBSS ACTIVE WIDE (0x6f 0dBm): Ad-Hoc supported Signed-off-by:
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Johannes Berg authored
When an internal scan is started, nothing protects the is_internal_short_scan variable which can cause crashes, cf. https://bugzilla.kernel.org/show_bug.cgi?id=15667. Fix this by making the short scan request use the mutex for locking, which requires making the request go to a work struct so that it can sleep. Reported-by:
Peter Zijlstra <peterz@infradead.org> Signed-off-by:
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- 14 Apr, 2010 9 commits
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Xose Vazquez Perez authored
A very useful information was provided by Sitecom R&D guys: Please find the information regarding our latest Ralink adapters below; WL-302 - VID: 0x0DF6, PID: 0x002D - Ralink RT2771 WL-315 - VID: 0x0DF6, PID: 0x0039 - Ralink RT2770 WL-319 - VID: 0x182D, PID: 0x0037 - Ralink RT2860 WL-321 - VID: 0x0DF6, PID: 0x003B - Ralink RT2770 WL-324 - VID: 0x0DF6, PID: 0x003D - Ralink RT2870 WL-329 - VID: 0x0DF6, PID: 0x0041 - Ralink RT3572 WL-343 - VID: 0x0DF6, PID: 0x003E - Ralink RT3070 WL-344 - VID: 0x0DF6, PID: 0x0040 - Ralink RT3071 WL-345 - VID: 0x0DF6, PID: 0x0042 - Ralink RT3072 WL-608 - VID: 0x0DF6, PID: 0x003F - Ralink RT2070 Note: PID: 0x003C, 0x004A, and 0x004D: --these products do not exist; devices were never produced/shipped-- The WL-349v4 USB dongle (0x0df6,0x0050) will be shipped soon (it isn't available yet), and uses a Ralink RT3370 chipset. Signed-off-by:
Xose Vazquez Perez <xose.vazquez@gmail.com> Acked-by:
Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by:
John W. Linville <linville@tuxdriver.com>
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Christian Lamparter authored
This patch adds the following 5 entries to the usbid device table: * Netgear WNA1000 * Proxim ORiNOCO Dual Band 802.11n USB Adapter * 3Com Dual Band 802.11n USB Adapter * H3C Dual Band 802.11n USB Adapter * WNC Generic 11n USB dongle CC: <stable@kernel.org> Signed-off-by:
Christian Lamparter <chunkeey@googlemail.com> Signed-off-by:
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Grazvydas Ignotas authored
If EEPROM is used, NVS data is now loaded but ignored. Stop loading it to avoid need of dummy NVS file for modules with EEPROM. Signed-off-by:
Grazvydas Ignotas <notasas@gmail.com> Acked-by:
Kalle Valo <kvalo@adurom.com> Signed-off-by:
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Ming Lei authored
This patch fixes two warnings below after unplugging ar9271 usb device: -one is a kernel warning[1] -another is a lockdep warning[2] The root reason is that __skb_queue_purge can't be executed in hardirq context, so the patch forks ath9k_skb_queue_purge(ath9k version of _skb_queue_purge), which frees skb with dev_kfree_skb_any which can be run in hardirq context safely, then prevent the lockdep warning and kernel warning after unplugging ar9271 usb device. [1] kernel warning [ 602.894005] ------------[ cut here ]------------ [ 602.894005] WARNING: at net/core/skbuff.c:398 skb_release_head_state+0x71/0x87() [ 602.894005] Hardware name: 6475EK2 [ 602.894005] Modules linked in: ath9k_htc ath9k ath9k_common ath9k_hw ath bridge stp llc sunrpc ipv6 cpufreq_ondemand acpi_cpufreq freq_table kvm_intel kvm arc4 ecb mac80211 snd_hda_codec_conexant snd_hda_intel snd_hda_codec snd_hwdep thinkpad_acpi snd_pcm snd_timer hwmon iTCO_wdt snd e1000e pcspkr i2c_i801 usbhid iTCO_vendor_support wmi cfg80211 yenta_socket rsrc_nonstatic pata_acpi snd_page_alloc soundcore uhci_hcd ohci_hcd ehci_hcd usbcore i915 drm_kms_helper drm i2c_algo_bit i2c_core video output [last unloaded: ath] [ 602.894005] Pid: 2506, comm: ping Tainted: G W 2.6.34-rc3-wl #20 [ 602.894005] Call Trace: [ 602.894005] <IRQ> [<ffffffff8104a41c>] warn_slowpath_common+0x7c/0x94 [ 602.894005] [<ffffffffa022f398>] ? __skb_queue_purge+0x43/0x4a [ath9k_htc] [ 602.894005] [<ffffffff8104a448>] warn_slowpath_null+0x14/0x16 [ 602.894005] [<ffffffff813269c1>] skb_release_head_state+0x71/0x87 [ 602.894005] [<ffffffff8132829a>] __kfree_skb+0x16/0x81 [ 602.894005] [<ffffffff813283b2>] kfree_skb+0x7e/0x86 [ 602.894005] [<ffffffffa022f398>] __skb_queue_purge+0x43/0x4a [ath9k_htc] [ 602.894005] [<ffffffffa022f560>] __hif_usb_tx+0x1c1/0x21b [ath9k_htc] [ 602.894005] [<ffffffffa022f73c>] hif_usb_tx_cb+0x12f/0x154 [ath9k_htc] [ 602.894005] [<ffffffffa00d2fbe>] usb_hcd_giveback_urb+0x91/0xc5 [usbcore] [ 602.894005] [<ffffffffa00f6c34>] ehci_urb_done+0x7a/0x8b [ehci_hcd] [ 602.894005] [<ffffffffa00f6f33>] qh_completions+0x2ee/0x376 [ehci_hcd] [ 602.894005] [<ffffffffa00f8ba5>] ehci_work+0x95/0x76e [ehci_hcd] [ 602.894005] [<ffffffffa00fa5ae>] ? ehci_irq+0x2f/0x1d4 [ehci_hcd] [ 602.894005] [<ffffffffa00fa725>] ehci_irq+0x1a6/0x1d4 [ehci_hcd] [ 602.894005] [<ffffffff810a6d18>] ? __rcu_process_callbacks+0x7a/0x2df [ 602.894005] [<ffffffff810a47a4>] ? handle_fasteoi_irq+0x22/0xd2 [ 602.894005] [<ffffffffa00d268d>] usb_hcd_irq+0x4a/0xa7 [usbcore] [ 602.894005] [<ffffffff810a2853>] handle_IRQ_event+0x77/0x14f [ 602.894005] [<ffffffff813285ce>] ? skb_release_data+0xc9/0xce [ 602.894005] [<ffffffff810a4814>] handle_fasteoi_irq+0x92/0xd2 [ 602.894005] [<ffffffff8100c4fb>] handle_irq+0x88/0x91 [ 602.894005] [<ffffffff8100baed>] do_IRQ+0x63/0xc9 [ 602.894005] [<ffffffff81354245>] ? ip_flush_pending_frames+0x4d/0x5c [ 602.894005] [<ffffffff813ba993>] ret_from_intr+0x0/0x16 [ 602.894005] <EOI> [<ffffffff811095fe>] ? __delete_object+0x5a/0xb1 [ 602.894005] [<ffffffff813ba5f5>] ? _raw_write_unlock_irqrestore+0x47/0x7e [ 602.894005] [<ffffffff813ba5fa>] ? _raw_write_unlock_irqrestore+0x4c/0x7e [ 602.894005] [<ffffffff811095fe>] __delete_object+0x5a/0xb1 [ 602.894005] [<ffffffff81109814>] delete_object_full+0x25/0x31 [ 602.894005] [<ffffffff813a60c0>] kmemleak_free+0x26/0x45 [ 602.894005] [<ffffffff810ff517>] kfree+0xaa/0x149 [ 602.894005] [<ffffffff81323fb7>] ? sock_def_write_space+0x84/0x89 [ 602.894005] [<ffffffff81354245>] ? ip_flush_pending_frames+0x4d/0x5c [ 602.894005] [<ffffffff813285ce>] skb_release_data+0xc9/0xce [ 602.894005] [<ffffffff813282a2>] __kfree_skb+0x1e/0x81 [ 602.894005] [<ffffffff813283b2>] kfree_skb+0x7e/0x86 [ 602.894005] [<ffffffff81354245>] ip_flush_pending_frames+0x4d/0x5c [ 602.894005] [<ffffffff81370c1f>] raw_sendmsg+0x653/0x709 [ 602.894005] [<ffffffff81379e31>] inet_sendmsg+0x54/0x5d [ 602.894005] [<ffffffff813207a2>] ? sock_recvmsg+0xc6/0xdf [ 602.894005] [<ffffffff813208c1>] sock_sendmsg+0xc0/0xd9 [ 602.894005] [<ffffffff810e13b4>] ? might_fault+0x68/0xb8 [ 602.894005] [<ffffffff810e13fd>] ? might_fault+0xb1/0xb8 [ 602.894005] [<ffffffff8132a1c3>] ? copy_from_user+0x2f/0x31 [ 602.894005] [<ffffffff8132a5b3>] ? verify_iovec+0x54/0x91 [ 602.894005] [<ffffffff81320d41>] sys_sendmsg+0x1da/0x241 [ 602.894005] [<ffffffff8103d327>] ? finish_task_switch+0x0/0xc9 [ 602.894005] [<ffffffff8103d327>] ? finish_task_switch+0x0/0xc9 [ 602.894005] [<ffffffff8107642e>] ? trace_hardirqs_on_caller+0x16/0x150 [ 602.894005] [<ffffffff813ba27d>] ? _raw_spin_unlock_irq+0x56/0x63 [ 602.894005] [<ffffffff8103d3cb>] ? finish_task_switch+0xa4/0xc9 [ 602.894005] [<ffffffff8103d327>] ? finish_task_switch+0x0/0xc9 [ 602.894005] [<ffffffff810357fe>] ? need_resched+0x23/0x2d [ 602.894005] [<ffffffff8107642e>] ? trace_hardirqs_on_caller+0x16/0x150 [ 602.894005] [<ffffffff813b9750>] ? trace_hardirqs_on_thunk+0x3a/0x3f [ 602.894005] [<ffffffff81009c02>] system_call_fastpath+0x16/0x1b [ 602.894005] ---[ end trace 91ba2d8dc7826839 ]--- [2] lockdep warning [ 169.363215] ====================================================== [ 169.365390] [ INFO: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected ] [ 169.366334] 2.6.34-rc3-wl #20 [ 169.366872] ------------------------------------------------------ [ 169.366872] khubd/78 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: [ 169.366872] (clock-AF_INET){++.?..}, at: [<ffffffff81323f51>] sock_def_write_space+0x1e/0x89 [ 169.366872] [ 169.366872] and this task is already holding: [ 169.366872] (&(&hif_dev->tx.tx_lock)->rlock){-.-...}, at: [<ffffffffa03715b0>] hif_usb_stop+0x24/0x53 [ath9k_htc] [ 169.366872] which would create a new lock dependency: [ 169.366872] (&(&hif_dev->tx.tx_lock)->rlock){-.-...} -> (clock-AF_INET){++.?..} [ 169.366872] [ 169.366872] but this new dependency connects a HARDIRQ-irq-safe lock: [ 169.366872] (&(&hif_dev->tx.tx_lock)->rlock){-.-...} [ 169.366872] ... which became HARDIRQ-irq-safe at: [ 169.366872] [<ffffffff810772d5>] __lock_acquire+0x2c6/0xd2b [ 169.366872] [<ffffffff8107866d>] lock_acquire+0xec/0x119 [ 169.366872] [<ffffffff813b99bb>] _raw_spin_lock+0x40/0x73 [ 169.366872] [<ffffffffa037163d>] hif_usb_tx_cb+0x5e/0x154 [ath9k_htc] [ 169.366872] [<ffffffffa00d2fbe>] usb_hcd_giveback_urb+0x91/0xc5 [usbcore] [ 169.366872] [<ffffffffa00f6c34>] ehci_urb_done+0x7a/0x8b [ehci_hcd] [ 169.366872] [<ffffffffa00f6f33>] qh_completions+0x2ee/0x376 [ehci_hcd] [ 169.366872] [<ffffffffa00f8ba5>] ehci_work+0x95/0x76e [ehci_hcd] [ 169.366872] [<ffffffffa00fa725>] ehci_irq+0x1a6/0x1d4 [ehci_hcd] [ 169.366872] [<ffffffffa00d268d>] usb_hcd_irq+0x4a/0xa7 [usbcore] [ 169.366872] [<ffffffff810a2853>] handle_IRQ_event+0x77/0x14f [ 169.366872] [<ffffffff810a4814>] handle_fasteoi_irq+0x92/0xd2 [ 169.366872] [<ffffffff8100c4fb>] handle_irq+0x88/0x91 [ 169.366872] [<ffffffff8100baed>] do_IRQ+0x63/0xc9 [ 169.366872] [<ffffffff813ba993>] ret_from_intr+0x0/0x16 [ 169.366872] [<ffffffff8130f6ee>] cpuidle_idle_call+0xa7/0x115 [ 169.366872] [<ffffffff81008c4f>] cpu_idle+0x68/0xc4 [ 169.366872] [<ffffffff813a41e0>] rest_init+0x104/0x10b [ 169.366872] [<ffffffff81899db3>] start_kernel+0x3f1/0x3fc [ 169.366872] [<ffffffff818992c8>] x86_64_start_reservations+0xb3/0xb7 [ 169.366872] [<ffffffff818993c4>] x86_64_start_kernel+0xf8/0x107 [ 169.366872] [ 169.366872] to a HARDIRQ-irq-unsafe lock: [ 169.366872] (clock-AF_INET){++.?..} [ 169.366872] ... which became HARDIRQ-irq-unsafe at: [ 169.366872] ... [<ffffffff81077349>] __lock_acquire+0x33a/0xd2b [ 169.366872] [<ffffffff8107866d>] lock_acquire+0xec/0x119 [ 169.366872] [<ffffffff813b9d07>] _raw_write_lock_bh+0x45/0x7a [ 169.366872] [<ffffffff8135cf14>] tcp_close+0x165/0x34d [ 169.366872] [<ffffffff8137aced>] inet_release+0x55/0x5c [ 169.366872] [<ffffffff81321350>] sock_release+0x1f/0x6e [ 169.366872] [<ffffffff813213c6>] sock_close+0x27/0x2b [ 169.366872] [<ffffffff8110dd45>] __fput+0x125/0x1ca [ 169.366872] [<ffffffff8110de04>] fput+0x1a/0x1c [ 169.366872] [<ffffffff8110adc9>] filp_close+0x68/0x72 [ 169.366872] [<ffffffff8110ae80>] sys_close+0xad/0xe7 [ 169.366872] [<ffffffff81009c02>] system_call_fastpath+0x16/0x1b (Trimmed at the "other info that might help us debug this" line in the interest of brevity... -- JWL) Signed-off-by:Ming Lei <tom.leiming@gmail.com> Acked-by:
Sujith <Sujith.Manoharan@atheros.com> Signed-off-by:
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Ming Lei authored
In ath9k-htc register out path, ath9k-htc will pass skb->data into usb hcd and usb hcd will do dma mapping and unmapping to the buffer pointed by skb->data, so we should pass a cache-line aligned address. This patch replace __dev_alloc_skb with alloc_skb to make skb->data pointed to a cacheline aligned address simply since ath9k-htc does not skb_push on the skb and pass it to mac80211, also use kfree_skb to free the skb allocated by alloc_skb(we can use kfree_skb safely in hardirq context since skb->destructor is NULL always in the path). Signed-off-by:
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Ming Lei authored
In ath9k-htc register in path, ath9k-htc will pass skb->data into usb hcd and usb hcd will do dma mapping and unmapping to the buffer pointed by skb->data, so we should pass a cache-line aligned address. This patch replace __dev_alloc_skb with alloc_skb to make skb->data pointed to a cacheline aligned address simply since ath9k-htc does not skb_push on the skb and pass it to mac80211, also use kfree_skb to free the skb allocated by alloc_skb(we can use kfree_skb safely in hardirq context since skb->destructor is NULL always in the path). Signed-off-by:
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Ming Lei authored
In ath9k_hif_usb_alloc_rx_urbs, ath9k-htc will pass skb->data into usb hcd and usb hcd will do dma mapping and unmapping to the buffer pointed by skb->data, so we should pass a cache-line aligned address. This patch replace __dev_alloc_skb with alloc_skb to make skb->data pointed to a cacheline aligned address simply since ath9k-htc does not skb_push on the skb and pass it to mac80211, also use kfree_skb to free the skbs allocated by alloc_skb(we can use kfree_skb safely in hardirq context since skb->destructor is NULL always in the path). Signed-off-by:
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Bruno Randolf authored
We get RXORN interrupts when all receive buffers are full. This is not necessarily a fatal situation. It can also happen when the bus is busy or the CPU is not fast enough to process all frames. Older chipsets apparently need a reset to come out of this situration, but on newer chips we can treat RXORN like RX, as going thru a full reset does more harm than good, there. The exact chip revisions which need a reset are unknown - this guess AR5K_SREV_AR5212 ("venice") is copied from the HAL. Inspired by openwrt 413-rxorn.patch: "treat rxorn like rx, reset after rxorn seems to do more harm than good" Signed-off-by:Bruno Randolf <br1@einfach.org> Signed-off-by:
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Bruno Randolf authored
There was a confusion in the usage of the bits AR5K_STA_ID1_ACKCTS_6MB and AR5K_STA_ID1_BASE_RATE_11B. If they are set (1), we will get lower bitrates for ACK and CTS. Therefore ath5k_hw_set_ack_bitrate_high(ah, false) actually resulted in high bitrates, which i think is what we want anyways. Cleared the confusion and added some documentation. Signed-off-by:
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- 12 Apr, 2010 10 commits
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Gertjan van Wingerde authored
Add RT3390 specific register initializations to rt2x00, based on the latest Ralink rt3390 vendor driver. Untested as I don't actually own an RT3390 based device, but given experiences on rt3070/rt3071 very hopeful that this will actually work.. Signed-off-by:
Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by:
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Gertjan van Wingerde authored
Add RT3090 specific register initializations to rt2x00, based on the latest Ralink rt3090 vendor driver. Untested as I don't actually own an RT3090 based device, but given experiences on rt3070/rt3071 very hopeful that this will actually work.. Signed-off-by:
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Gertjan van Wingerde authored
Add RT3071 specific register initializations to rt2x00, based on the latest Ralink rt3070 vendor driver. With this patch my RT3071 based devices start showing a sign of life. Signed-off-by:
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Gertjan van Wingerde authored
rt2x00 had preliminary support for RT3070 based devices, but the support was incomplete. Update the RT3070 register initialization to be similar to the latest Ralink vendor driver. With this patch my rt3070 based devices start showing a sign of life. Signed-off-by:
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Gertjan van Wingerde authored
Align the rt2800 register initializations with the latest versions of the Ralink vendor driver. This patch is also preparation for the addition of support for RT3070 / RT3071 / RT3090 / RT3390 based devices. Signed-off-by:
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Gertjan van Wingerde authored
The rt2800 version constants are inconsistent, and the version number don't mean a lot of things anyway. Refactor the constants to have some more meaningful names, and introduce and use some new helpers to check these chipset revisions. At the same time rename to revision, as they are more revision numbers rather than version numbers. Signed-off-by:
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Gertjan van Wingerde authored
Only include definitions for RT chipsets that are also used inside the Ralink vendor drivers. Signed-off-by:
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Gertjan van Wingerde authored
Definitions taken from the latest rt2860 / rt2870 / rt3070 / rt3090 Ralink vendor drivers. Signed-off-by:
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Gertjan van Wingerde authored
It seems that the distinction between RF channel switch method is solely based on the RF chipset that is used. Refactor the channel switch decision to just take the RF chipset into account, thereby greatly simplifying the check. Signed-off-by:
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Quintin Pitts authored
This patch fixes an old problem, which - under certain circumstances - could cause the device to become unresponsive. most of p54pci's rx-ring management is implemented in just two distinct standalone functions. p54p_check_rx_ring takes care of processing incoming data, while p54p_refill_rx_ring tries to replenish all depleted communication buffers. This has always worked fine on my fast machine, but now I know there is a hidden race... The most likely candidate here is ring_control->device_idx. Quintin Pitts had already analyzed the culprit and posted a patch back in Oct 2009. But sadly, no one's picked up on this. ( https://patchwork.kernel.org/patch/53079/ [2 & 3] ). This patch does the same way, except that it also prioritize rx data processing, simply because tx routines *can* wait. Reported-by:
Sean Young <sean@mess.org> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=11386Reported-by:
Quintin Pitts <geek4linux@gmail.com> Signed-off-by:
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