On Wed, Jun 19, 2013 at 10:15:56PM +0200, Arnaud Ebalard wrote: > Hi Simon, > > Simon Guinot <simon.guinot@xxxxxxxxxxxx> writes: > > > I have tested this patch on my 2Big Network v2 board. > > > > Sometimes I get a weird "No such device" error while reading or writing > > the hwmon sysfs attributes. For example: > > > > # cat pwm1 > > cat: read error: No such device > > # cat pwm1 > > 0 > This is odd, since ENODEV should not be returned as error code from i2c read operations. What is the i2c controller ? Thanks, Guenter > Weird, I cannot reproduce that at all on my ReadyNAS Duo v2. > > > Note, that if the same command is executed again (just after the faulty > > one), then it will succeed most of the time. The errors seems to happen > > quite randomly and not very often. I'd say one time over ten tries. > > I suppose this error is now visible due to the enhanced error path in > > g762_update_client. It looks like we learn something by checking the > > return value for i2c_smbus_read_byte_data :) > > > > Except that, all is working as expected. This new version fixes > > effectively open-loop driving when the set_cnt register is set to 0xff. > > > > Also I am planning (hopefully this Wednesday) to test your patch on my > > 5Big Network v2 board. This last also embed a g762 controller but with a > > three wires fan instead. Then, I should be able to test the closed-loop > > mode behaviour. > > Thanks for your tests, Simon. > > Cheers, > > a+ > -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
