aksingh@hss.hns.com wrote:
Hi,
I am implementing a poll function for my char device, there is a standard
procedure of doing it,
1. poll_wait(give yr wait_queues address here);
2. then see if there is something to be read/write, set a mask and return
to user.
but here drivers dont seem to add the current process to the waitqueue,
before calling poll_wait, so does poll_wait does this for them ?
regards
Amit
yes exactly. poll_wait adds a wait queue in the pollwait table of the
kernel. When an event occurs (write of data for example), the process is
awaken.
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