[U-Boot] [PATCH v1] clk: clk-uclass: Check ops pointer before use it

[Stephen Warren]

On 08/17/2016 01:05 AM, Wenyou Yang wrote:
> Add check ops pointer before use it. Otherwise, it will cause
> the runtime error for the clk devices without ops callback.

Other uclasses like reset, power domain, and mailbox don't do this. All 
drivers must have an ops pointer, or they can't be useful. I'm not sure 
this patch is necessary. Is it just a debugging aid so if the driver 
writer forgets to set the ops pointer the system will error out rather 
than crashing? If so, a post-bind hook in the uclass that refuses the 
driver if it hasn't set the ops pointer would be better.