On Thu, Feb 25, 2021 at 10:15:16PM +0100, Heiko Thiery wrote: > When accessing the timecounter register on an i.MX8MQ the kernel hangs. > This is only the case when the interface is down. This can be reproduced > by reading with 'phc_ctrl eth0 get'. > > Like described in the change in 91c0d987a9788dcc5fe26baafd73bf9242b68900 > the igp clock is disabled when the interface is down and leads to a > system hang. > > So we check if the ptp clock status before reading the timecounter > register. > > Signed-off-by: Heiko Thiery <heiko.thi...@gmail.com> > --- > v2: > - add mutex (thanks to Richard) > > v3: > I did a mistake and did not test properly > - add parenteses > - fix the used variable
Acked-by: Richard Cochran <richardcoch...@gmail.com>
