bug-report: Ralink corp. Device [1814:539a] - Kernel 3.8 +

Dear Team,

I'am using the following wireless-network-device:

Network controller [0280]: Ralink corp. Device [1814:539a]
Subsystem: Hewlett-Packard Company Device [103c:1839] Kernel driver in use: rt2800pci

I had problems with it since I bought my laptop... The driver was unstable with the kernel I used back in autumn 2012. Howeverer, one kernel-update fixed it. Must be something about 3.4x?

It was defenetly working with the Kernels from 3.5 till 3.7 on multible distros. 3.8 was bringing back the old Problems:

- extremly low signal
- hard to establish a connection to any acess-point.

The last "problematic" kernel I have testet was 3.9.5-1 on Arch-Linux. Compiling the compat-drivers manually did not bring any fix.

I am currently using 3.7.4-1 wich is working.

Quoted 22 lines

Dear Team,

I'am using the following wireless-network-device:

Network controller [0280]: Ralink corp. Device [1814:539a]
Subsystem: Hewlett-Packard Company Device [103c:1839] Kernel driver in use: rt2800pci

I had problems with it since I bought my laptop... The driver was unstable with the kernel I used back in autumn 2012. Howeverer, one kernel-update fixed it. Must be something about 3.4x?

It was defenetly working with the Kernels from 3.5 till 3.7 on multible distros. 3.8 was bringing back the old Problems:

- extremly low signal
- hard to establish a connection to any acess-point.

The last "problematic" kernel I have testet was 3.9.5-1 on Arch-Linux. Compiling the compat-drivers manually did not bring any fix.

Quoted 1 line

I am currently using 3.7.4-1 wich is working.

This most likely is a RT5390 TX power problem I made on 3.8.

This patch should help:
https://git.kernel.org/cgit/linux/kernel/git/linville/wireless.git/commit/?id=8c8d2017ba25c510ddf093419048460db1109bc4

Stanislaw

Once we implement proper TSSI tuning on 5390/3290 we can restore back setting TX power by BBP_R1 register for those chips.