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Date: Wed, 8 Nov 2006 14:43:59 +0100
From: "Attilio Rao" <attilio@freebsd.org>
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To: "Jacqueline P" <jackie7691@yahoo.com.mx>, freebsd-drivers@freebsd.org
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Subject: Re: PCCARD - interruptible sleep
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2006/11/8, Jacqueline P <jackie7691@yahoo.com.mx>:
> Hi all
>
>  how can I implement an interruptible sleep within my pccard smart card reader driver like ?
>  For Linux I do this the following way
>
>  // interruptible_pause()
> static inline void ipause(unsigned long amount) {
>  set_current_state(TASK_INTERRUPTIBLE);
>  schedule_timeout(amount);
> }
>
>  and within my driver I use the function DELAY which does a busy wait.
>
>  The problem is, that the driver does not recognize when the pccard is detached during a read / write operation.
>
>  Does the kernel update the struct device_t, so that the driver can use the function device_is_attached() to determine that the device is detached ?

You can implement a 'dying' flag in your softc structure (and
subsequent macro in order to handle).

Attilio


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