From 509f89652f83e834b3ef7a083e2eeac812b055f0 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 9 Mar 2018 07:21:45 -0500 Subject: [PATCH] media: em28xx: fix a regression with HVR-950 Commit be7fd3c3a8c5 ("media: em28xx: Hauppauge DualHD second tuner functionality") removed the logic with sets the alternate for the DVB device. Without setting the right alternate, the device won't be able to submit URBs, and userspace fails with -EMSGSIZE: ERROR DMX_SET_PES_FILTER failed (PID = 0x2000): 90 Message too long Tested with Hauppauge HVR-950 model A1C0. Fixes: be7fd3c3a8c5 ("media: em28xx: Hauppauge DualHD second tuner functionality") Cc: Brad Love Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/em28xx/em28xx-dvb.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/media/usb/em28xx/em28xx-dvb.c b/drivers/media/usb/em28xx/em28xx-dvb.c index a54cb8dc52c9..2ce7de1c7cce 100644 --- a/drivers/media/usb/em28xx/em28xx-dvb.c +++ b/drivers/media/usb/em28xx/em28xx-dvb.c @@ -199,6 +199,7 @@ static int em28xx_start_streaming(struct em28xx_dvb *dvb) int rc; struct em28xx_i2c_bus *i2c_bus = dvb->adapter.priv; struct em28xx *dev = i2c_bus->dev; + struct usb_device *udev = interface_to_usbdev(dev->intf); int dvb_max_packet_size, packet_multiplier, dvb_alt; if (dev->dvb_xfer_bulk) { @@ -217,6 +218,7 @@ static int em28xx_start_streaming(struct em28xx_dvb *dvb) dvb_alt = dev->dvb_alt_isoc; } + usb_set_interface(udev, dev->ifnum, dvb_alt); rc = em28xx_set_mode(dev, EM28XX_DIGITAL_MODE); if (rc < 0) return rc;