These patches modify the common probe routine to recognize the RTL8188EE
chip and implement asynchronous firmware reading in the callback routine
to initialize the sw variables.
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Cc: jcheung@suse.com
Cc: machen@suse.com
Cc: mmarek@suse.cz
Cc: zhiyuan_yang@realsil.com.cn
Cc: page_he@realsil.com.cn
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

rtlwifi: rtl8192c: rtl8192ce: rtl8192cu: rtl8192de: rtl8723ae: Add changes required by adding rtl81988ee

This patch combines the remaining changes in the rtlwifi family to handle
the addition of rtl8188ee. A number of these changes eliminate some CamelCase
variable names, and other shorten common variable names so that long lines
in the new driver could be shortened.
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Cc: jcheung@suse.com
Cc: machen@suse.com
Cc: mmarek@suse.cz
Cc: zhiyuan_yang@realsil.com.cn
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Cc: jcheung@suse.com
Cc: machen@suse.com
Cc: mmarek@suse.cz
Cc: page_he@realsil.com.cn
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

In commit a5ffbe0a, some of the calls to rtl_lps_leave() were switched
to be called from a work queue to avoid a scheduling while atomic bug.
This patch converts the remaining calls to use the work queue. In
addition, the call to rtl_lps_enter() is also switched to the work
queue. None of these newly converted calls had triggered the bug (yet),
but this change make all of them fit a single pattern.
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Cc: jcheung@suse.com
Cc: machen@suse.com
Cc: mmarek@suse.cz
Cc: zhiyuan_yang@realsil.com.cn
Cc: page_he@realsil.com.cn
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Cc: jcheung@suse.com
Cc: machen@suse.com
Cc: mmarek@suse.cz
Cc: zhiyuan_yang@realsil.com.cn
Cc: page_he@realsil.com.cn
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Cc: jcheung@suse.com
Cc: machen@suse.com
Cc: mmarek@suse.cz
Cc: zhiyuan_yang@realsil.com.cn
Cc: page_he@realsil.com.cn
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Cc: jcheung@suse.com
Cc: machen@suse.com
Cc: mmarek@suse.cz
Cc: zhiyuan_yang@realsil.com.cn
Cc: page_he@realsil.com.cn
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

These changes add the new variables for P2P and modify the various struct
definitions for other new features.

This patch updates files base.{c,h} for the changes in the newest vendor
driver.

This patch updates files ps.{c,h} for the changes in the newest vendor
driver.

This patch updates files debug.{c,h}, efuse.c, pci.{c,h}, and wifi.h for
the changes in the newest vendor driver.

This patch updates files core.c, ps.c, rc.c, and wifi.h for
the changes in the newest vendor driver.
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Cc: jcheung@suse.com
Cc: machen@suse.com
Cc: mmarek@suse.cz
Cc: zhiyuan_yang@realsil.com.cn
Cc: page_he@realsil.com.cn
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Add proper alignment at first packet copy, to avoid extra copies made later
in networking stack.
Signed-off-by: NJussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Move processing of received packets to tasklet from hard-irq context.
Signed-off-by: NJussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

RX path has extra copying of packets, that can be avoided.
Signed-off-by: NJussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Use dedicated DMA coherent buffers for RX urbs, to avoid allocation of large
skbuffs in hard-irq context and improve performance.
Signed-off-by: NJussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NJussi Kivilinna <jussi.kivilinna@iki.fi>
Acked-by: NLarry Finger <Larry.Finger@lwfinger.net>
Cc: stable@vger.kernel.org
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

There are a number of situations in which mac80211 only
really needs to flush queues for one virtual interface,
and in fact during this frames might be transmitted on
other virtual interfaces. Calculate and pass a queue
bitmap to the driver so it knows which queues to flush.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

The driver was failing to clear the BSSID when a disconnect happened. That
prevented a reconnection. This problem is reported at
https://bugzilla.redhat.com/show_bug.cgi?id=789605,
https://bugzilla.redhat.com/show_bug.cgi?id=866786,
https://bugzilla.redhat.com/show_bug.cgi?id=906734, and
https://bugzilla.kernel.org/show_bug.cgi?id=46171.

Thanks to Jussi Kivilinna for making the critical observation
that led to the solution.
Reported-by: NJussi Kivilinna <jussi.kivilinna@iki.fi>
Tested-by: NJussi Kivilinna <jussi.kivilinna@iki.fi>
Tested-by: NAlessandro Lannocca <alessandro.lannocca@gmail.com>
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NAndrei Epure <epure.andrei@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

When run at debug 3 or higher, rtl8192cu reports a BUG as follows:

BUG: scheduling while atomic: kworker/u:0/5281/0x00000002
INFO: lockdep is turned off.
Modules linked in: rtl8192cu rtl8192c_common rtlwifi fuse af_packet bnep bluetooth b43 mac80211 cfg80211 ipv6 snd_hda_codec_conexant kvm_amd k
vm snd_hda_intel snd_hda_codec bcma rng_core snd_pcm ssb mmc_core snd_seq snd_timer snd_seq_device snd i2c_nforce2 sr_mod pcmcia forcedeth i2c_core soundcore
 cdrom sg serio_raw k8temp hwmon joydev ac battery pcmcia_core snd_page_alloc video button wmi autofs4 ext4 mbcache jbd2 crc16 thermal processor scsi_dh_alua
 scsi_dh_hp_sw scsi_dh_rdac scsi_dh_emc scsi_dh ata_generic pata_acpi pata_amd [last unloaded: rtlwifi]
Pid: 5281, comm: kworker/u:0 Tainted: G        W    3.8.0-wl+ #119
Call Trace:
 [<ffffffff814531e7>] __schedule_bug+0x62/0x70
 [<ffffffff81459af0>] __schedule+0x730/0xa30
 [<ffffffff81326e49>] ? usb_hcd_link_urb_to_ep+0x19/0xa0
 [<ffffffff8145a0d4>] schedule+0x24/0x70
 [<ffffffff814575ec>] schedule_timeout+0x18c/0x2f0
 [<ffffffff81459ec0>] ? wait_for_common+0x40/0x180
 [<ffffffff8133f461>] ? ehci_urb_enqueue+0xf1/0xee0
 [<ffffffff810a579d>] ? trace_hardirqs_on+0xd/0x10
 [<ffffffff81459f65>] wait_for_common+0xe5/0x180
 [<ffffffff8107d1c0>] ? try_to_wake_up+0x2d0/0x2d0
 [<ffffffff8145a08e>] wait_for_completion_timeout+0xe/0x10
 [<ffffffff8132ab1c>] usb_start_wait_urb+0x8c/0x100
 [<ffffffff8132adf9>] usb_control_msg+0xd9/0x130
 [<ffffffffa057dd8d>] _usb_read_sync+0xcd/0x140 [rtlwifi]
 [<ffffffffa057de0e>] _usb_read32_sync+0xe/0x10 [rtlwifi]
 [<ffffffffa04b0555>] rtl92cu_update_hal_rate_table+0x1a5/0x1f0 [rtl8192cu]

The cause is a synchronous read from routine rtl92cu_update_hal_rate_table().
The resulting output is not critical, thus the debug statement is
deleted.
Reported-by: NJussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Move the sequence number arithmetic code from mac80211 to
ieee80211.h so others can use it. Also rename the functions
from _seq to _sn, they operate on the sequence number, not
the sequence_control field.

Also move macros to convert the sequence control to/from
the sequence number value from various drivers.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

rtlwifi allocates both setup_packet and data buffer of control message urb,
using shared kmalloc in _usbctrl_vendorreq_async_write. Structure used for
allocating is:
	struct {
		u8 data[254];
		struct usb_ctrlrequest dr;
	};

Because 'struct usb_ctrlrequest' is __packed, setup packet is unaligned and
DMA mapping of both 'data' and 'dr' confuses ARM/sunxi, leading to memory
corruptions and freezes.

Patch changes setup packet to be allocated separately.

[v2]:
 - Use WARN_ON_ONCE instead of WARN_ON

Cc: <stable@vger.kernel.org>
Signed-off-by: NJussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

For VHT, many more bandwidth changes are possible. As a first
step, stop toggling the IEEE80211_HT_CAP_SUP_WIDTH_20_40 flag
in the HT capabilities and instead introduce a bandwidth field
indicating the currently usable bandwidth to transmit to the
station. Of course, make all drivers use it.

To achieve this, make ieee80211_ht_cap_ie_to_sta_ht_cap() get
the station as an argument, rather than the new capabilities,
so it can set up the new bandwidth field.

If the station is a VHT station and VHT bandwidth is in use,
also set the bandwidth accordingly.

Doing this allows us to get rid of the supports_40mhz flag as
the HT capabilities now reflect the true capability instead of
the current setting.

While at it, also fix ieee80211_ht_cap_ie_to_sta_ht_cap() to not
ignore HT cap overrides when MCS TX isn't supported (not that it
really happens...)
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

As the number of drivers in the rtlwifi family has grown, the Kconfig
section for them has grown unwieldy. This change has two effects: (1)
Variable RTLWIFI_DEBUG is documented, and (2) the entries for the
drivers that depend on RTLWIFI are indented.
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This partially reverts commit 44ba9736.

rate_control_rate_init assumes the rate_init member of
struct rate_control_ops is not NULL therefore not initializing it leads to
an oops as soon the driver succesfully associates to an AP.

The removal of rate_update from 44ba9736
is ok because rate_update is checked for NULL before being
called.
Signed-off-by: NCatalin Iacob <iacobcatalin@gmail.com>
Acked-by: NLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

A new model of the RTL8188CUS has appeared.
Reported-and-tested-by: NThomas Rosenkrantz <tom.rosary@googlemail.com>
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

When the new_id entry in /sysfs is used for a foreign USB device, rtlwifi
BUGS with a NULL pointer dereference because the per-driver configuration
data is not available. The probe function has been restructured as
suggested by Ben Hutchings <bhutchings@solarflare.com>.
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The use of variable packet_beacon might be uninitialized in the two files,
which is same as this patch:
https://patchwork.kernel.org/patch/2006711/Signed-off-by: NCong Ding <dinggnu@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Kernel commits 41affd52 and 6539306b changed the locking in rtl_lps_leave()
from a spinlock to a mutex by doing the calls indirectly from a work queue
to reduce the time that interrupts were disabled. This change was fine for
most systems; however a scheduling while atomic bug was reported in
https://bugzilla.redhat.com/show_bug.cgi?id=903881. The backtrace indicates
that routine rtl_is_special(), which calls rtl_lps_leave() in three places
was entered in atomic context. These direct calls are replaced by putting a
request on the appropriate work queue.
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Reported-and-tested-by: NNathaniel Doherty <ntdoherty@gmail.com>
Cc: Nathaniel Doherty <ntdoherty@gmail.com>
Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Whe this driver is built with "make W=1", the following warnings are output:

drivers/net/wireless/rtlwifi/rtl8723ae/fw.c:515:5: warning: variable ‘own’ set but not used [-Wunused-but-set-variable]
drivers/net/wireless/rtlwifi/rtl8723ae/hal_btc.c:1436:5: warning: variable ‘bt_retry_cnt’ set but not used [-Wunused-but-set-variable]
drivers/net/wireless/rtlwifi/rtl8723ae/hw.c:706:6: warning: variable ‘reg_ratr’ set but not used [-Wunused-but-set-variable]
drivers/net/wireless/rtlwifi/rtl8723ae/hw.c:2033:41: warning: variable ‘cur_rfstate’ set but not used [-Wunused-but-set-variable]
drivers/net/wireless/rtlwifi/rtl8723ae/phy.c:620:23: warning: variable ‘radiob_arraylen’ set but not used [-Wunused-but-set-variable]
drivers/net/wireless/rtlwifi/rtl8723ae/phy.c:619:7: warning: variable ‘radiob_array_table’ set but not used [-Wunused-but-set-variable]
drivers/net/wireless/rtlwifi/rtl8723ae/phy.c:617:7: warning: variable ‘rtstatus’ set but not used [-Wunused-but-set-variable]
drivers/net/wireless/rtlwifi/rtl8723ae/phy.c:1534:6: warning: variable ‘bbvalue’ set but not used [-Wunused-but-set-variable]
drivers/net/wireless/rtlwifi/rtl8723ae/phy.c:1716:6: warning: variable ‘reg_ecc’ set but not used [-Wunused-but-set-variable]
drivers/net/wireless/rtlwifi/rtl8723ae/phy.c:1715:61: warning: variable ‘reg_ec4’ set but not used [-Wunused-but-set-variable]
drivers/net/wireless/rtlwifi/rtl8723ae/phy.c:1715:34: warning: variable ‘reg_eac’ set but not used [-Wunused-but-set-variable]
drivers/net/wireless/rtlwifi/rtl8723ae/trx.c:247:6: warning: variable ‘psaddr’ set but not used [-Wunused-but-set-variable]
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

when this driver is built with "make W=1", the following warning is printed:

drivers/net/wireless/rtlwifi/rtl8192de/dm.c:1058:5: warning: comparison is always false due to limited range of data type [-Wtype-limits]
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

When this driver is built with "make W=1", the following warning is output:

drivers/net/wireless/rtlwifi/rtl8192cu/sw.c:56:6: warning: variable ‘err’ set but not used [-Wunused-but-set-variable]
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

When this driver is built with "make W=1", the following warning occurs:

drivers/net/wireless/rtlwifi/rtl8192c/dm_common.c:907:4: warning: comparison is always false due to limited range of data type [-Wtype-limits]
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Building this driver with "make W=1" results in the following 2 warnings:

drivers/net/wireless/rtlwifi/usb.c:829:21: warning: variable ‘urb_list’ set but not used [-Wunused-but-set-variable]
drivers/net/wireless/rtlwifi/usb.c:828:23: warning: variable ‘skb_list’ set but not used [-Wunused-but-set-variable]
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Many warnings like the following arise from a build with W=1 on the
make line:

warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]

Changing the overall debug level storage from unsigned to signed fixes these.
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NAnatol Pomozov <anatol.pomozov@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

In routine _rtl_rx_pre_process(), skb_dequeue() is called to get an skb;
however, the wrong variable name is used in subsequent calls.
Reported-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The use of variable packet_beacon might be uninitialized in the three files.
Signed-off-by: NCong Ding <dinggnu@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The CONFIG_EXPERIMENTAL config item has not carried much meaning for a
while now and is almost always enabled by default. As agreed during the
Linux kernel summit, remove it from any "depends on" lines in Kconfigs.

Cc: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Chaoming Li <chaoming_li@realsil.com.cn>
Acked-by: NJohn W. Linville <linville@tuxdriver.com>
Acked-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NKees Cook <keescook@chromium.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The kbuild test robot reports the following warning with x86_64-randconfig-x955:

warning: (RTL8192CE && RTL8192SE && RTL8192DE && RTL8723AE && RTL8192CU) selects
 RTLWIFI which has unmet direct dependencies (NETDEVICES && WLAN &&
 (RTL8192CE || RTL8192CU || RTL8192SE || RTL8192DE))

This warning was introduced in commit a2905935, "rtlwifi: Modify files for addition
of rtl8723ae", and is d ue to a missing dependence of RTLWIFI on RTL8723AE.
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Cc: kbuild test robot <fengguang.wu@intel.com>
Reported-by: Nkbuild test robot <fengguang.wu@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The reg_notifier()'s return value need not be checked
as it is only supposed to do post regulatory work and
that should never fail. Any behaviour to regulatory
that needs to be considered before cfg80211 does work
to a driver should be specified by using the already
existing flags, the reg_notifier() just does post
processing should it find it needs to.

Also make lbs_reg_notifier static.
Signed-off-by: NLuis R. Rodriguez <mcgrof@do-not-panic.com>
[move lbs_reg_notifier to not break compile]
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Signed-off-by: NJulian Wollrath <jwollrath@web.de>
Acked-by: NLarry Finger <Larry.finger@lwfinger.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>