V4L/DVB (11712): gspca - main: Set the current alternate setting only when needed
Signed-off-by: Jean-Francois Moine <moinejf@free.fr> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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@ -486,7 +486,7 @@ static struct usb_host_endpoint *get_ep(struct gspca_dev *gspca_dev)
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}
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}
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PDEBUG(D_STREAM, "use alt %d ep 0x%02x",
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PDEBUG(D_STREAM, "use alt %d ep 0x%02x",
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i, ep->desc.bEndpointAddress);
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i, ep->desc.bEndpointAddress);
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if (i > 0) {
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if (gspca_dev->nbalt > 1) {
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ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, i);
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ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, i);
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if (ret < 0) {
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if (ret < 0) {
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err("set alt %d err %d", i, ret);
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err("set alt %d err %d", i, ret);
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@ -653,6 +653,8 @@ static int gspca_set_alt0(struct gspca_dev *gspca_dev)
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{
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{
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int ret;
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int ret;
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if (gspca_dev->alt == 0)
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return 0;
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ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, 0);
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ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, 0);
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if (ret < 0)
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if (ret < 0)
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PDEBUG(D_ERR|D_STREAM, "set alt 0 err %d", ret);
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PDEBUG(D_ERR|D_STREAM, "set alt 0 err %d", ret);
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