linux-kernel - Re: DVB: af9015 defunct [was: mmotm 2010-10-20-15-01 uploaded]

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Date:	Fri, 22 Oct 2010 11:21:03 +0200
From:	Jiri Slaby <jirislaby@...il.com>
To:	linux-kernel@...r.kernel.org
CC:	akpm@...ux-foundation.org, mm-commits@...r.kernel.org,
	Antti Palosaari <crope@....fi>,
	Mauro Carvalho Chehab <mchehab@...hat.com>,
	Greg KH <gregkh@...e.de>, USB list <linux-usb@...r.kernel.org>
Subject: Re: DVB: af9015 defunct [was: mmotm 2010-10-20-15-01 uploaded]

On 10/21/2010 07:51 PM, Jiri Slaby wrote:
> On 10/21/2010 12:01 AM, akpm@...ux-foundation.org wrote:
>> The mm-of-the-moment snapshot 2010-10-20-15-01 has been uploaded to
> 
> Well, this release happens to be a multimedia failure :(.
> 
> I hit another regression against mmotm 2010-10-13-17-13, where
> 0413:6029 (DVB USB tuner) can't be inited when plugged in. Even lsusb
> waits inifitely.

Revert of this commit helps:

commit 99ef217e01780668ac21d600eaf4acd3f7666a02
Author: Mauro Carvalho Chehab <mchehab@...hat.com>
Date:   Sun Sep 26 22:58:28 2010 -0300

    [media] tda18271: allow restricting max out to 4 bytes

    By default, tda18271 tries to optimize I2C bus by updating all registers
    at the same time. Unfortunately, some devices doesn't support it.

    The current logic has a problem when small_i2c is equal to 8, since
there
    are some transfers using 11 + 1 bytes.

    Fix the problem by enforcing the max size at the right place, and allows
    reducing it to max = 3 + 1.

    Acked-by: Michael Krufky <mkrufky@...nellabs.com>
    Acked-by: Sri Deevi <Srinivasa.Deevi@...exant.com>
    Signed-off-by: Mauro Carvalho Chehab <mchehab@...hat.com>

> usb 2-6: new high speed USB device using ehci_hcd and address 5
> dvb-usb: found a 'Leadtek WinFast DTV Dongle Gold' in cold state, will
> try to load a firmware
> dvb-usb: downloading firmware from file 'dvb-usb-af9015.fw'
> dvb-usb: found a 'Leadtek WinFast DTV Dongle Gold' in warm state.
> dvb-usb: will pass the complete MPEG2 transport stream to the software
> demuxer.
> DVB: registering new adapter (Leadtek WinFast DTV Dongle Gold)
> af9013: firmware version:4.95.0.0
> DVB: registering adapter 1 frontend 0 (Afatech AF9013 DVB-T)...
> tda18271 18-00c0: creating new instance
> TDA18271HD/C2 detected @ 18-00c0
> af9015: command failed:1
> tda18271_write_regs: [18-00c0|M] ERROR: idx = 0x0, len = 39,
> i2c_transfer returned: -1
> af9015: command failed:1
> tda18271_write_regs: [18-00c0|M] ERROR: idx = 0x20, len = 1,
> i2c_transfer returned: -1
> af9015: command failed:1
> tda18271_write_regs: [18-00c0|M] ERROR: idx = 0x20, len = 1,
> i2c_transfer returned: -1
> af9015: command failed:1
> tda18271_write_regs: [18-00c0|M] ERROR: idx = 0x20, len = 1,
> i2c_transfer returned: -1
> af9015: command failed:1
> tda18271_write_regs: [18-00c0|M] ERROR: idx = 0x20, len = 1,
> i2c_transfer returned: -1
> af9015: recv bulk message failed:-71
> af9015: bulk message failed:-71 (8/0)
> af9013: I2C read failed reg:d417
> tda18271_write_regs: [18-00c0|M] ERROR: idx = 0x5, len = 11,
> i2c_transfer returned: -1
> af9015: bulk message failed:-71 (8/0)
> af9013: I2C read failed reg:d417
> af9015: bulk message failed:-71 (9/0)
> af9015: bulk message failed:-71 (8/0)
> af9013: I2C read failed reg:d417
> tda18271_write_regs: [18-00c0|M] ERROR: idx = 0x13, len = 1,
> i2c_transfer returned: -71
> af9015: bulk message failed:-71 (8/0)
> af9013: I2C read failed reg:d417
> af9015: bulk message failed:-71 (9/0)
> af9015: bulk message failed:-71 (8/0)
> af9013: I2C read failed reg:d417
> tda18271_write_regs: [18-00c0|M] ERROR: idx = 0x13, len = 1,
> i2c_transfer returned: -71
> 
> regards,
-- 
js
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