Re: [ts-7000] Re: Disabling interrupts and kernel driver ioctls.

[David Hawkins <>]

Hi Kevin,

> No ... if you are using the variable from write() and from the
> ISR, then you will generally need to protect it with a spinlock.

Another good driver test is to create a program with 10 or 100
processes or threads, and hammer the same device.

The fact that multiple processes can access a /proc node
also indicates that you will want some kind of protection.
Since you access the variable in an ISR, then the spinlock
is the appropriate protection mechanism.

Cheers
Dave


 
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