On 2018/5/8 11:28, Guenter Roeck wrote:
On 05/07/2018 08:18 PM, Jia-Ju Bai wrote:
The write operation to "wdt->timeout" is protected by
the lock on line 118, but the read operation to
this data on line 105 is not protected by the lock.
Thus, there may exist a data race for "wdt->timeout".
To fix this data race, the read operation to "wdt->timeout"
should be also protected by the lock.
There is no race. There is already a mutex in the watchdog core which
serializes
calls to the various API functions. It would make more sense to drop
drv->lock
from the driver.
Thanks for your reply :)
Need I submit a patch of dropping all calls to "drv->lock"?
Best wishes,
Jia-Ju Bai
