On 2/13/24 12:41 PM, Claudiu wrote: > From: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx> > > Do not apply features to hardware if the interface is down. In case runtime > PM is enabled, and while the interface is down, the IP will be in reset > mode (as for some platforms disabling the clocks will switch the IP to > reset mode, which will lead to losing register contents) and applying > settings in reset mode is not an option. Instead, cache the features and > apply them in ravb_open() through ravb_emac_init(). > > To avoid accessing the hardware while the interface is down > pm_runtime_active() check was introduced. Along with it the device runtime > PM usage counter has been incremented to avoid disabling the device clocks > while the check is in progress (if any). > > Commit prepares for the addition of runtime PM. > > Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx> Reviewed-by: Sergey Shtylyov <s.shtylyov@xxxxxx> [...] MBR, Sergey
