From c96cfe756cb607fecb05a1715c87c7aab294b0b4 Mon Sep 17 00:00:00 2001 From: Patrick Boettcher Date: Wed, 20 Sep 2006 11:06:11 +0200 Subject: Power control of the device for dual board From: Patrick Boettcher Corrected power control of the device for dual boards Signed-off-by: Patrick Boettcher --- linux/drivers/media/dvb/dvb-usb/dvb-usb-init.c | 11 ++++++++--- linux/drivers/media/dvb/dvb-usb/dvb-usb.h | 2 ++ 2 files changed, 10 insertions(+), 3 deletions(-) (limited to 'linux') diff --git a/linux/drivers/media/dvb/dvb-usb/dvb-usb-init.c b/linux/drivers/media/dvb/dvb-usb/dvb-usb-init.c index 0dd90d1fe..ffdde83d1 100644 --- a/linux/drivers/media/dvb/dvb-usb/dvb-usb-init.c +++ b/linux/drivers/media/dvb/dvb-usb/dvb-usb-init.c @@ -136,7 +136,7 @@ static int dvb_usb_init(struct dvb_usb_device *d) if (d->priv == NULL) { err("no memory for priv in 'struct dvb_usb_device'"); return -ENOMEM; - } + } } /* check the capabilities and set appropriate variables */ @@ -197,8 +197,13 @@ static struct dvb_usb_device_description * dvb_usb_find_device(struct usb_device int dvb_usb_device_power_ctrl(struct dvb_usb_device *d, int onoff) { - if (d->powered == !onoff) { - d->powered = onoff; + if (onoff) + d->powered++; + else + d->powered--; + + if (d->powered == 0 || (onoff && d->powered == 1)) { // when switching from 1 to 0 or from 0 to 1 + deb_info("power control: %d\n", onoff); if (d->props.power_ctrl) return d->props.power_ctrl(d, onoff); } diff --git a/linux/drivers/media/dvb/dvb-usb/dvb-usb.h b/linux/drivers/media/dvb/dvb-usb/dvb-usb.h index a26a91d50..883496c00 100644 --- a/linux/drivers/media/dvb/dvb-usb/dvb-usb.h +++ b/linux/drivers/media/dvb/dvb-usb/dvb-usb.h @@ -328,6 +328,8 @@ struct dvb_usb_adapter { * @desc: pointer to the device's struct dvb_usb_device_description. * @state: initialization and runtime state of the device. * + * @powered: indicated whether the device is power or not. + * Powered is in/decremented for each call to modify the state. * @udev: pointer to the device's struct usb_device. * * @usb_mutex: semaphore of USB control messages (reading needs two messages) -- cgit v1.2.3