On 10/15/19 6:19 AM, Chris Chiu wrote:
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 initilization without checking MAC status. Signed-off-by: Chris Chiu <chiu@xxxxxxxxxxxx> --- drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h | 1 + drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c | 1 + drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 3 +++ 3 files changed, 5 insertions(+)
Looks good to me! If this takes care of the warm boot problem, that's pretty awesome.
Signed-off-by: Jes Sorensen <Jes.Sorensen@xxxxxxxxx> Jes
