linux-stable.git/drivers/net/wireless/realtek, branch linux-4.13.y

rtlwifi: rtl8821ae: Fix connection lost problem

2017-10-27T08:39:14+00:00

commit b8b8b16352cd90c6083033fd4487f04fae935c18 upstream.

In commit 40b368af4b75 ("rtlwifi: Fix alignment issues"), the read
of REG_DBI_READ was changed from 16 to 8 bits. For unknown reasonsi
this change results in reduced stability for the wireless connection.
This regression was located using bisection.

Fixes: 40b368af4b75 ("rtlwifi: Fix alignment issues")
Reported-and-tested-by: James Cameron 
Signed-off-by: Larry Finger 
Cc: Ping-Ke Shih 
Signed-off-by: Kalle Valo 
Signed-off-by: Greg Kroah-Hartman

rtlwifi: btcoexist: Fix antenna selection code

2017-09-13T21:20:52+00:00

commit 6d622692836950b3c943776f84c4557ff6c02f3b upstream.

In commit 87d8a9f35202 ("rtlwifi: btcoex: call bind to setup btcoex"),
the code turns on a call to exhalbtc_bind_bt_coex_withadapter(). This
routine contains a bug that causes incorrect antenna selection for those
HP laptops with only one antenna and an incorrectly programmed EFUSE.
These boxes are the ones that need the ant_sel module parameter.

Fixes: 87d8a9f35202 ("rtlwifi: btcoex: call bind to setup btcoex")
Signed-off-by: Larry Finger 
Cc: Ping-Ke Shih 
Cc: Yan-Hsuan Chuang 
Cc: Birming Chiu 
Cc: Shaofu 
Cc: Steven Ting 
Signed-off-by: Kalle Valo 
Signed-off-by: Greg Kroah-Hartman

rtlwifi: btcoexist: Fix breakage of ant_sel for rtl8723be

2017-09-13T21:20:52+00:00

commit a33fcba6ec01efcca33b1afad91057020f247f15 upstream.

In commit bcd37f4a0831 ("rtlwifi: btcoex: 23b 2ant: let bt transmit when
hw initialisation done"), there is an additional error when the module
parameter ant_sel is used to select the auxilary antenna. The error is
that the antenna selection is not checked when writing the antenna
selection register.

Fixes: bcd37f4a0831 ("rtlwifi: btcoex: 23b 2ant: let bt transmit when hw initialisation done")
Signed-off-by: Larry Finger 
Cc: Ping-Ke Shih 
Cc: Yan-Hsuan Chuang 
Cc: Birming Chiu 
Cc: Shaofu 
Cc: Steven Ting 
Signed-off-by: Kalle Valo 
Signed-off-by: Greg Kroah-Hartman

rtlwifi: Fix fallback firmware loading

2017-09-09T15:39:28+00:00

commit 1d9b168d8ea9a0f51947d0e2f84856e77d2fe7ff upstream.

Commit f70e4df2b384 ("rtlwifi: Add code to read new versions of
firmware") added code to load an old firmware file if the new one is
not available.  Unfortunately that code is never reached because
request_firmware_nowait() does not wait for the firmware to show up
and returns 0 even if the file is not there.

Use the existing fallback mechanism introduced by commit 62009b7f1279
("rtlwifi: rtl8192cu: Add new firmware") instead.

Fixes: f70e4df2b384 ("rtlwifi: Add code to read new versions of firmware")
Signed-off-by: Sven Joachim 
Signed-off-by: Kalle Valo 
Signed-off-by: Greg Kroah-Hartman

rtlwifi: Fix memory leak when firmware request fails

2017-09-09T15:39:28+00:00

commit f2764f61fa10593204b0c5e4e9a68dba02112e50 upstream.

This patch will fix memory leak when firmware request fails

Signed-off-by: Souptick Joarder 
Acked-by: Larry Finger 
Signed-off-by: Kalle Valo 
Cc: Sven Joachim 
Signed-off-by: Greg Kroah-Hartman

rtlwifi: rtl_pci_probe: Fix fail path of _rtl_pci_find_adapter

2017-09-09T15:39:24+00:00

commit fc81bab5eeb103711925d7510157cf5cd2b153f4 upstream.

_rtl_pci_find_adapter fail path will jump to label fail3 for
unsupported adapter types.

However, on course for fail3 there will be call rtl_deinit_core
before rtl_init_core.

For the inclusion of checking pci_iounmap this fail can be moved to
fail2.

Fixes
[    4.492963] BUG: unable to handle kernel NULL pointer dereference at           (null)
[    4.493067] IP: rtl_deinit_core+0x31/0x90 [rtlwifi]

Signed-off-by: Malcolm Priestley 
Signed-off-by: Kalle Valo 
Signed-off-by: Greg Kroah-Hartman

Revert "rtlwifi: btcoex: rtl8723be: fix ant_sel not work"

2017-07-21T07:41:43+00:00

This reverts commit f95d95a7cd5514549dcf6ba754f0ee834cce3e1f.

With commit f95d95a7cd55 ("rtlwifi: btcoex: rtl8723be: fix ant_sel not
work"), the kernel has a NULL pointer dereference oops. This content and
the proper fix will be included in a later patch.

Fixes: f95d95a7cd55 ("rtlwifi: btcoex: rtl8723be: fix ant_sel not work")
Signed-off-by: Larry Finger 
Cc: Ping-Ke Shih 
Cc: Yan-Hsuan Chuang 
Cc: Birming Chiu 
Cc: Shaofu 
Cc: Steven Ting 
Signed-off-by: Kalle Valo

rtlwifi: Add in_4way field for btcoexist

2017-06-28T17:51:01+00:00

If wifi is in 4way, btcoex give wifi higher priority to use antenna.

Signed-off-by: Ping-Ke Shih 
Signed-off-by: Larry Finger 
Cc: Yan-Hsuan Chuang 
Cc: Birming Chiu 
Cc: Shaofu 
Cc: Steven Ting 
Signed-off-by: Kalle Valo

rtlwifi: Fill ap_num field by driver

2017-06-28T17:51:01+00:00

Check beacon and probe_resp frames to know ap_num

Signed-off-by: Ping-Ke Shih 
Signed-off-by: Larry Finger 
Cc: Yan-Hsuan Chuang 
Cc: Birming Chiu 
Cc: Shaofu 
Cc: Steven Ting 
Signed-off-by: Kalle Valo

rtlwifi: Add ap_num field for btcoexist

2017-06-28T17:51:00+00:00

If there are many AP (dirty environment), we use another strategy set
to resolve coex issue.

Signed-off-by: Ping-Ke Shih 
Signed-off-by: Larry Finger 
Cc: Yan-Hsuan Chuang 
Cc: Birming Chiu 
Cc: Shaofu 
Cc: Steven Ting 
Signed-off-by: Kalle Valo