On 3/23/20 11:58 PM, Reto Schneider wrote: > Before this update, with version 80 of the firmware, the USB interface > of the RTL8192CU WLAN controller often locked itself up: > usb 1-2: device descriptor read/64, error -110 > usb 1-2: device not accepting address 4, error -110 > usb 1-2: device not accepting address 5, error -110 > usb usb1-port2: unable to enumerate USB device > usb 2-2: device descriptor read/64, error -110 > usb 2-2: device descriptor read/64, error -110 > > On ARMv5 based GARDENA smart gateway running Linux 4.19.78, this can > be reliably reproduced by rebooting (warm) the gateway multiple times > (max. 50 attempts needed). > Unlike users having this issues on a USB Wi-Fi dongle, resetting of the > chip by replugging is not an option on this gateway due to the lack of > any power cut functionality. Therefore, a (cold) reboot of the whole > gateway is needed. > > Updating the firmware of the RTL8192CU WLAN controller from version > v80.0 to v88.2 (as per output of rtl8xxxu, which was used temporarily) > seems to resolve this issue. The problem did no show up anymore for 1000 > restarts. > Please note that only rtl8192cufw_TMSC.bin has been tested. > > Unrelated of this USB problem, another issue still remains: Using the > rtl8192cu driver, scanning for available SSIDs yields no more results > after a few hundred scans (iw wlan0 scan). > > Also, the Realtek drivers containing v88.2 of the firmware > (v4.0.1_6911.20130308 to v4.0.9_25039.20171107) have some changes > compared to the version v3.4.2_3727.20120404, for which I am unsure of > whether they need to be reflected in rtl8192cu and/or rtl8xxxu. > What I could spot for sure however, is that some tables have been > updated: > https://github.com/rettichschnidi/linux/commit/0c865ba26aba907b601b3b73c82111dd10e59ffe > > I am unsure if this changes are relevant and how the best way would be > to ensure that this commit does not break old drivers out there. > > Reto Schneider (1): > rtlwifi: v88.2 firmware files for RTL8192CU > > WHENCE | 6 ++++++ > rtlwifi/rtl8192cufw_A.bin | Bin 16116 -> 16126 bytes > rtlwifi/rtl8192cufw_B.bin | Bin 16096 -> 16096 bytes > rtlwifi/rtl8192cufw_TMSC.bin | Bin 16116 -> 16126 bytes > 4 files changed, 6 insertions(+) > Is there anything left I need to do in order to get this patch merged? Reto
Attachment:
0xBFB93E8F422586E0.asc
Description: application/pgp-keys
