Date: Sun, 9 Jan 2011 15:51:42 -0500 From: Andrew Gallatin <gallatin@gmail.com> To: Hans Petter Selasky <hselasky@c2i.net> Cc: freebsd-multimedia@freebsd.org Subject: Re: em28xx? Message-ID: <AANLkTim8rAEsmonUvQoQ%2Bt4=K4OqGJ74G7HZW-9onn4Q@mail.gmail.com> In-Reply-To: <AANLkTikkBcP-CmqSgJpQP4t7Dz4iUR_UkOJogtE-Q=yi@mail.gmail.com> References: <AANLkTimhh9qt1mwMk0NJ0_XP2W14azixpKD=fZYYpOpi@mail.gmail.com> <AANLkTimOtABnMgkNn9jAiThWmZ9Ec3pNQ%2Bq_GR_1Ae4h@mail.gmail.com> <201101082130.05180.hselasky@c2i.net> <AANLkTikkBcP-CmqSgJpQP4t7Dz4iUR_UkOJogtE-Q=yi@mail.gmail.com>
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--0016e6509cb8ccd5a304997004fb Content-Type: text/plain; charset=ISO-8859-1 Ahah! Apparently linux mutexes are recursive! The driver holds dev->mutex and tries to lock it again. If I comment out the outer level of taking/releasing the mutex (attached) then the driver fully attaches. I guess a better patch would be to make the mutexes in your shim layer recursive as well. At any rate, I now see: em28xx: New device @ 480 Mbps (1b80:a340, interface 0, class 0) em28xx #0: chip ID is em2870 em28xx #0: i2c eeprom 00: 1a eb 67 95 80 1b 40 a3 c0 13 6b 10 6a 22 00 00 em28xx #0: i2c eeprom 10: 00 00 04 57 00 0d 00 00 00 00 00 00 00 00 00 00 em28xx #0: i2c eeprom 20: 44 00 00 00 f0 10 01 00 00 00 00 00 5b 1c c0 00 em28xx #0: i2c eeprom 30: 00 00 20 40 20 80 02 20 01 01 00 00 00 00 00 00 em28xx #0: i2c eeprom 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 em28xx #0: i2c eeprom 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 em28xx #0: i2c eeprom 60: 00 00 00 00 00 00 00 00 00 00 22 03 55 00 53 00 em28xx #0: i2c eeprom 70: 42 00 20 00 32 00 38 00 37 00 30 00 20 00 44 00 em28xx #0: i2c eeprom 80: 65 00 76 00 69 00 63 00 65 00 00 00 00 00 00 00 em28xx #0: i2c eeprom 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 em28xx #0: i2c eeprom a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 em28xx #0: i2c eeprom b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 em28xx #0: i2c eeprom c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 em28xx #0: i2c eeprom d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 em28xx #0: i2c eeprom e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 em28xx #0: i2c eeprom f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 em28xx #0: EEPROM ID= 0x9567eb1a, EEPROM hash = 0x2888a312 em28xx #0: EEPROM info: em28xx #0: No audio on board. em28xx #0: 500mA max power em28xx #0: Table at 0x04, strings=0x226a, 0x0000, 0x0000 em28xx #0: Identified as KWorld PlusTV 340U or UB435-Q (ATSC) (card=76) em28xx #0: v4l2 driver version 0.1.2 em28xx #0: V4L2 video device registered as video0 tda18271 129-0060: creating new instance TDA18271HD/C1 detected @ 129-0060 DVB: registering new adapter (em28xx #0) DVB: registering adapter 0 frontend 0 (LG Electronics LGDT3304 VSB/QAM Frontend)... em28xx #0: Successfully loaded em28xx-dvb Creating /dev/video0 Creating /dev/dvb/adapter0/demux0 Creating /dev/dvb/adapter0/dvr0 Creating /dev/dvb/adapter0/frontend0 Hurray!! Drew --0016e6509cb8ccd5a304997004fb Content-Type: text/x-patch; charset=US-ASCII; name="recursion.diff" Content-Disposition: attachment; filename="recursion.diff" Content-Transfer-Encoding: base64 X-Attachment-Id: f_giqf3wkb0 LS0tIC91c3IvcG9ydHMvbXVsdGltZWRpYS93ZWJjYW1kL3dvcmsvd2ViY2FtZC0wLjEuMTgvdjRs LWR2Yi9saW51eC9kcml2ZXJzL21lZGlhL3ZpZGVvL2VtMjh4eC9lbTI4eHgtY2FyZHMuYwkyMDEw LTA3LTAxIDIzOjM4OjU0LjAwMDAwMDAwMCAtMDQwMAorKysgdjRsLWR2Yi9saW51eC9kcml2ZXJz L21lZGlhL3ZpZGVvL2VtMjh4eC9lbTI4eHgtY2FyZHMuYwkyMDExLTAxLTA5IDE1OjQ4OjQ1LjY1 Nzg1MTQ5MCAtMDUwMApAQCAtMzE2NCw3ICszMTY0LDcgQEAgc3RhdGljIGludCBlbTI4eHhfdXNi X3Byb2JlKHN0cnVjdCB1c2JfaQogCiAJLyogYWxsb2NhdGUgZGV2aWNlIHN0cnVjdCAqLwogCW11 dGV4X2luaXQoJmRldi0+bG9jayk7Ci0JbXV0ZXhfbG9jaygmZGV2LT5sb2NrKTsKKy8vCW11dGV4 X2xvY2soJmRldi0+bG9jayk7CiAJcmV0dmFsID0gZW0yOHh4X2luaXRfZGV2KCZkZXYsIHVkZXYs IGludGVyZmFjZSwgbnIpOwogCWlmIChyZXR2YWwpIHsKIAkJZW0yOHh4X2RldnVzZWQgJj0gfigx PDxkZXYtPmRldm5vKTsKQEAgLTMxODEsNyArMzE4MSw3IEBAIHN0YXRpYyBpbnQgZW0yOHh4X3Vz Yl9wcm9iZShzdHJ1Y3QgdXNiX2kKIAkvKiBTaG91bGQgYmUgdGhlIGxhc3QgdGhpbmcgdG8gZG8s IHRvIGF2b2lkIG5ld2VyIHVkZXYncyB0bwogCSAgIG9wZW4gdGhlIGRldmljZSBiZWZvcmUgZnVs bHkgaW5pdGlhbGl6aW5nIGl0CiAJICovCi0JbXV0ZXhfdW5sb2NrKCZkZXYtPmxvY2spOworLy8J bXV0ZXhfdW5sb2NrKCZkZXYtPmxvY2spOwogCiAJcmV0dXJuIDA7CiAK --0016e6509cb8ccd5a304997004fb--
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