Larry Finger c713fb071e rtlwifi: rtl8821ae: Fix connection lost problem correctly ... There has been a coding error in rtl8821ae since it was first introduced, namely that an 8-bit register was read using a 16-bit read in _rtl8821ae_dbi_read(). This error was fixed with commit 40b368af4b ("rtlwifi: Fix alignment issues"); however, this change led to instability in the connection. To restore stability, this change was reverted in commit b8b8b16352 ("rtlwifi: rtl8821ae: Fix connection lost problem"). Unfortunately, the unaligned access causes machine checks in ARM architecture, and we were finally forced to find the actual cause of the problem on x86 platforms. Following a suggestion from Pkshih <pkshih@realtek.com>, it was found that increasing the ASPM L1 latency from 0 to 7 fixed the instability. This parameter was varied to see if a smaller value would work; however, it appears that 7 is the safest value. A new symbol is defined for this quantity, thus it can be easily changed if necessary. Fixes: b8b8b16352 ("rtlwifi: rtl8821ae: Fix connection lost problem") Cc: Stable <stable@vger.kernel.org> # 4.14+ Fix-suggested-by: Pkshih <pkshih@realtek.com> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Tested-by: James Cameron <quozl@laptop.org> # x86_64 OLPC NL3 Signed-off-by: Kalle Valo <kvalo@codeaurora.org>		2018-02-07 15:38:37 +02:00
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Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
def.h	…
dm.c	rtlwifi: Add bw_update parameter for RA mask update.	2017-10-13 12:43:41 +03:00
dm.h	…
fw.c	rtlwifi: rtl8821ae: fix spelling mistake: "faill" -> "failed"	2017-08-24 12:56:05 +03:00
fw.h	rtlwifi: Add btcoex record_pwr_mode	2017-06-21 18:28:05 +03:00
hw.c	rtlwifi: rtl8821ae: Fix connection lost problem correctly	2018-02-07 15:38:37 +02:00
hw.h	rtlwifi: Convert individual interrupt results to struct	2017-12-07 15:13:32 +02:00
led.c	rtlwifi: Move items out of rtl_pci_priv and rtl_usb_priv	2017-02-08 17:24:42 +02:00
led.h	…
phy.c	rtlwifi: make a couple arrays larger	2017-08-24 12:53:50 +03:00
phy.h	rtlwifi: use s8 instead of char	2016-06-29 18:48:15 +03:00
pwrseq.c	…
pwrseq.h	…
reg.h	rtlwifi: fix REG_USTIME_TSF register definition	2017-06-21 18:23:43 +03:00
rf.c	rtlwifi: rtl8821ae: Remove all instances of DBG_EMERG	2016-12-30 15:54:20 +02:00
rf.h	…
sw.c	rtlwifi: Add module parameter ASPM	2017-10-13 12:43:42 +03:00
sw.h	…
table.c	wireless: use ARRAY_SIZE	2017-12-08 15:19:46 +02:00
table.h	rtlwifi: Update 8812ae new phy parameters and its parser.	2017-03-20 19:10:15 +02:00
trx.c	rtlwifi: rtl8192ee: Make driver support 64bits DMA.	2017-10-13 12:43:38 +03:00
trx.h	rtlwifi: rtl8192ee: Make driver support 64bits DMA.	2017-10-13 12:43:38 +03:00