The cx231xx driver is too verbose. Several debug messages are sent to dmesg. Do some cleanup and fix i2c_scan. After this patch, it will now produce: [ 608.359255] usb 1-2: New device Conexant Corporation Polaris AV Capturb @ 480 Mbps (1554:5010) with 7 interfaces [ 608.360009] usb 1-2: Identified as Pixelview PlayTV USB Hybrid (card=10) [ 608.363129] i2c i2c-8: Added multiplexed i2c bus 10 [ 608.363201] i2c i2c-8: Added multiplexed i2c bus 11 [ 610.968904] cx25840 7-0044: loaded v4l-cx231xx-avcore-01.fw firmware (16382 bytes) [ 611.041317] Chip ID is not zero. It is not a TEA5767 [ 611.041351] tuner 9-0060: Tuner -1 found with type(s) Radio TV. [ 611.041429] tda18271 9-0060: creating new instance [ 611.044096] TDA18271HD/C2 detected @ 9-0060 [ 611.239460] tda18271: performing RF tracking filter calibration [ 612.800569] tda18271: RF tracking filter calibration complete [ 612.835365] usb 1-2: v4l2 driver version 0.0.3 [ 613.055006] usb 1-2: Registered video device video0 [v4l2] [ 613.055461] usb 1-2: Registered VBI device vbi0 [ 613.110279] Registered IR keymap rc-pixelview-002t [ 613.110574] input: i2c IR (Pixelview PlayTV USB Hy as /devices/virtual/rc/rc0/input12 [ 613.111398] rc0: i2c IR (Pixelview PlayTV USB Hy as /devices/virtual/rc/rc0 [ 613.111409] ir-kbd-i2c: i2c IR (Pixelview PlayTV USB Hy detected at i2c-9/9-0030/ir0 [cx231xx #0-2] [ 613.111444] usb 1-2: video EndPoint Addr 0x84, Alternate settings: 5 [ 613.111454] usb 1-2: VBI EndPoint Addr 0x85, Alternate settings: 2 [ 613.111465] usb 1-2: sliced CC EndPoint Addr 0x86, Alternate settings: 2 [ 613.111474] usb 1-2: TS EndPoint Addr 0x81, Alternate settings: 6 [ 613.111654] usbcore: registered new interface driver cx231xx [ 613.136510] usb 1-2: audio EndPoint Addr 0x83, Alternate settings: 3 [ 613.136521] usb 1-2: Cx231xx Audio Extension initialized [ 613.199085] usb 1-2: dvb_init: looking for demod on i2c bus: 9 [ 613.232349] i2c i2c-11: Detected a Fujitsu mb86a20s frontend [ 613.232385] tda18271 9-0060: attaching existing instance [ 613.232392] DVB: registering new adapter (cx231xx #0) [ 613.232402] usb 1-2: DVB: registering adapter 0 frontend 0 (Fujitsu mb86A20s)... [ 613.234528] usb 1-2: Successfully loaded cx231xx-dvb [ 613.234618] usb 1-2: Cx231xx dvb Extension initialized Still verbose, but at least it doesn't produce extra logs during normal work. I2C scan is now fixed and not too verbose: [ 608.371656] usb 1-2: i2c scan: found device @ port 0 addr 0x40 [???] [ 608.374750] usb 1-2: i2c scan: found device @ port 0 addr 0x60 [colibri] [ 608.378433] usb 1-2: i2c scan: found device @ port 0 addr 0x88 [hammerhead] [ 608.380226] usb 1-2: i2c scan: found device @ port 0 addr 0x98 [???] [ 608.405747] usb 1-2: i2c scan: found device @ port 3 addr 0xa0 [eeprom] [ 608.422310] usb 1-2: i2c scan: found device @ port 2 addr 0x60 [colibri] [ 608.430229] usb 1-2: i2c scan: found device @ port 2 addr 0xc0 [tuner] [ 608.438793] usb 1-2: i2c scan: found device @ port 4 addr 0x20 [demod] [ 608.560247] cx25840 7-0044: cx23102 A/V decoder found @ 0x88 (cx231xx #0-0) Tested with a Pixelview PlayTV USB Hybrid SBTVD. - v2: - The i2c scan fix patch got replaced by the one sent by Matthias; - Converted to dev_foo() instead of pr_foo(); - Some minor CodingStyle cleanups; - Be a little less verbose on i2c_scan; - Bumped version string. Matthias Schwarzott (1): [media] cx231xx: use 1 byte read for i2c scan Mauro Carvalho Chehab (13): [media] cx231xx: get rid of driver-defined printk macros [media] cx231xx: Fix identation [media] cx231xx: Cleanup printk at the driver [media] cx25840: Don't report an error if max size is adjusted [media] cx25840: convert max_buf_size var to lowercase [media] cx231xx: disable I2C errors during i2c_scan [media] cx231xx: convert from pr_foo to dev_foo [media] cx231xx: get rid of audio debug parameter [media] cx231xx: use dev_foo instead of printk [media] cx231xx: add addr for demod and make i2c_devs const [media] cx231xx: use dev_info() for extension load/unload [media] cx231xx: too much changes. Bump version number [media] cx231xx: simplify I2C scan debug messages drivers/media/i2c/cx25840/cx25840-firmware.c | 11 +- drivers/media/usb/cx231xx/cx231xx-417.c | 53 +++-- drivers/media/usb/cx231xx/cx231xx-audio.c | 93 +++++---- drivers/media/usb/cx231xx/cx231xx-avcore.c | 292 +++++++++++++++------------ drivers/media/usb/cx231xx/cx231xx-cards.c | 158 ++++++++------- drivers/media/usb/cx231xx/cx231xx-core.c | 150 +++++++------- drivers/media/usb/cx231xx/cx231xx-dvb.c | 114 ++++++----- drivers/media/usb/cx231xx/cx231xx-i2c.c | 37 ++-- drivers/media/usb/cx231xx/cx231xx-input.c | 1 - drivers/media/usb/cx231xx/cx231xx-pcb-cfg.c | 47 +++-- drivers/media/usb/cx231xx/cx231xx-vbi.c | 48 +++-- drivers/media/usb/cx231xx/cx231xx-video.c | 85 ++++---- drivers/media/usb/cx231xx/cx231xx.h | 21 +- 13 files changed, 583 insertions(+), 527 deletions(-) -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html