From 21131a2da173b9d9778728319946e40681075b0d Mon Sep 17 00:00:00 2001 From: Chris Chiu Date: Wed, 16 Oct 2019 09:54:08 +0800 Subject: rtl8xxxu: fix RTL8723BU connection failure issue after warm reboot [ Upstream commit 0eeb91ade90ce06d2fa1e2fcb55e3316b64c203c ] The RTL8723BU has problems connecting to AP after each warm reboot. Sometimes it returns no scan result, and in most cases, it fails the authentication for unknown reason. However, it works totally fine after cold reboot. Compare the value of register SYS_CR and SYS_CLK_MAC_CLK_ENABLE for cold reboot and warm reboot, the registers imply that the MAC is already powered and thus some procedures are skipped during driver initialization. Double checked the vendor driver, it reads the SYS_CR and SYS_CLK_MAC_CLK_ENABLE also but doesn't skip any during initialization based on them. This commit only tells the RTL8723BU to do full initialization without checking MAC status. Signed-off-by: Chris Chiu Signed-off-by: Jes Sorensen Signed-off-by: Kalle Valo Signed-off-by: Sasha Levin --- drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c') diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c index 02b8ddd98a95..f51ee88d692b 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c @@ -1673,6 +1673,7 @@ struct rtl8xxxu_fileops rtl8723bu_fops = { .has_s0s1 = 1, .has_tx_report = 1, .gen2_thermal_meter = 1, + .needs_full_init = 1, .adda_1t_init = 0x01c00014, .adda_1t_path_on = 0x01c00014, .adda_2t_path_on_a = 0x01c00014, -- cgit v1.2.3