On Fri, Jan 17 2014, Robert Baldyga wrote:
> @@ -558,6 +560,45 @@ static long ffs_ep0_ioctl(struct file *file, unsigned
> code, unsigned long value)
> return ret;
> }
>
> +static unsigned int ffs_ep0_poll(struct file *file, poll_table *wait)
> +{
> + struct ffs_data *ffs = file->private_data;
> + unsigned int mask = POLLWRNORM;
> + int ret;
> +
> + ret = ffs_mutex_lock(&ffs->mutex, file->f_flags & O_NONBLOCK);
> + if (unlikely(ret < 0))
> + return mask;
> +
> + switch (ffs->state) {
> + case FFS_READ_DESCRIPTORS:
> + case FFS_READ_STRINGS:
> + mask |= POLLOUT;
> + break;
> +
> + case FFS_ACTIVE:
> + switch (FFS_SETUP_STATE(ffs)) {
One more thing, this should not be FFS_SETUP_STATE but simply
ffs->setup_state. This is because FFS_SETUP_STATE changes value of
ffs->setup_state and we don't want that to happen here.
> + case FFS_NO_SETUP:
> + if (ffs->ev.count)
> + mask |= POLLIN;
> + break;
> +
> + case FFS_SETUP_PENDING:
> + mask |= (POLLIN | POLLOUT);
> + break;
> +
> + case FFS_SETUP_CANCELED:
> + break;
> + }
> + case FFS_CLOSING:
> + break;
> + }
> +
> + mutex_unlock(&ffs->mutex);
> +
> + return mask;
> +}
> +
> static const struct file_operations ffs_ep0_operations = {
> .llseek = no_llseek,
>
--
Best regards, _ _
.o. | Liege of Serenely Enlightened Majesty of o' \,=./ `o
..o | Computer Science, Michał “mina86” Nazarewicz (o o)
ooo +--<m...@google.com>--<xmpp:min...@jabber.org>--ooO--(_)--Ooo--
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