cx23885 driver and DMA timeouts

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G'day,

I have been trying to merge Chris Pascoe's driver for the DViCO FusionHDTV Dual PCIe into the main hg repository. (My latest version is attached)

I have only gotten so far and was wondering if anyone had any idea to debug or fix the following problem. I can use one tuner at a time, ie tuner 1 (ts1) or tuner 2 (ts2), with cx23885 module loaded with debug=1, I get repeated (the [c7f533c0/29 ] changes between lines):
Jun 21 14:38:41 stephen-desktop kernel: [ 1717.056949] cx23885[0]/0: [c7f533c0/29 ] cx23885_buf_queue - append to active
Jun 21 14:38:41 stephen-desktop kernel: [ 1717.056953] cx23885[0]/0: queue is not empty - append to active

This is ok as it is working, that was just for reference to compare the errored section below.

As soon as I try to access both cards at the same time it breaks and only a full computer restart will fix it, i have tried unloading all the modules that I can find that this card uses and loading them again. I get the syslog attached below (cx23885 with debug =1).  It doesn't matter what progam i use to access them (tried gxine, totem, mythtv) it all works the same, only one at a time or it breaks.

Thanks,

Stephen.

#### Syslog ####
Jun 21 14:38:41 stephen-desktop kernel: [ 1717.056958] cx23885[0]/0: [f7517f00/30] cx23885_buf_queue - append to active
Jun 21 14:38:41 stephen-desktop kernel: [ 1717.056962] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:41 stephen-desktop kernel: [ 1717.056967] cx23885[0]/0: [f751 7180/31] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053512] cx23885[0]/0: cx23885_timeout()
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053519] cx23885[0]/0: cx23885_stop_dma()
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053533] cx23885[0]/0: [e235b300/0] timeout - dma=0x06bd9000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053537] cx23885[0]/0: [e235b540/1] timeout - dma=0x254ab000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053542] cx23885[0]/0: [e235bb40/2] timeout - dma=0x255ae000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053547] cx23885[0]/0: [e235b600/3] timeout - dma=0x12bc9000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053551] cx23885[0]/0: [cd6e7f00/4] timeout - dma=0x06a11000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053556] cx23885[0]/0: [c7e9dcc0/5] timeout - dma=0x0af3b000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053561] cx23885[0]/0: [c7ea83c0/6] timeout - dma=0x06beb000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053566] cx23885[0]/0: [c345e900/7] timeout - dma=0x0a421000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053571] cx23885[0]/0: [cf412840/8] timeout - dma=0x09775000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053575] cx23885[0]/0: [cf412180/9] timeout - dma=0x0af00000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053580] cx23885[0]/0: [cf412000/10] timeout - dma=0x0918e000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053585] cx23885[0]/0: [c8376780/11] timeout - dma=0x3751e000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053590] cx23885[0]/0: [c8376480/12] timeout - dma=0x36bf4000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053595] cx23885[0]/0: [c948db40/13] timeout - dma=0x1fa90000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053600] cx23885[0]/0: [e59f8cc0/14] timeout - dma=0x065f5000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053605] cx23885[0]/0: [e59f8480/15] timeout - dma=0x0e5d9000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053610] cx23885[0]/0: [e59f8d80/16] timeout - dma=0x06563000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053614] cx23885[0]/0: [e59f8f00/17] timeout - dma=0x0d539000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053619] cx23885[0]/0: [e59f8a80/18] timeout - dma=0x0b9a3000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053624] cx23885[0]/0: [e59f8600/19] timeout - dma=0x0c4d3000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053629] cx23885[0]/0: [e59f8540/20] timeout - dma=0x0b7d3000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053634] cx23885[0]/0: [e59f8e40/21] timeout - dma=0x0d74b000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053639] cx23885[0]/0: [c921d240/22] timeout - dma=0x0837b000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053643] cx23885[0]/0: [c7de60c0/23] timeout - dma=0x0902a000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053648] cx23885[0]/0: [c7de6600/24] timeout - dma=0x0c171000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053653] cx23885[0]/0: [cf0b00c0/25] timeout - dma=0x3725a000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053658] cx23885[0]/0: [cf0b0480/26] timeout - dma=0x06482000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053663] cx23885[0]/0: [cf0b0840/27] timeout - dma=0x377cc000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053668] cx23885[0]/0: [d09d8180/28] timeout - dma=0x254a7000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053673] cx23885[0]/0: [c7f533c0/29] timeout - dma=0x258e4000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053677] cx23885[0]/0: [f7517f00/30] timeout - dma=0x25a47000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053682] cx23885[0]/0: [f7517180/31] timeout - dma=0x25aad000
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053686] cx23885[0]/0: restarting queue
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053694] cx23885[0]/0: queue is empty - first active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053700] cx23885[0]/0: cx23885_start_dma() w: 752, h: 32, f: 2
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053705] cx23885[0]/0: cx23885_sram_channel_setup() Configuring channel [TS1 B]
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053921] cx23885[0]/0: cx23885_start_dma() enabling TS int's and DMA
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053934] cx23885[0]/0: [e235b300/0] cx23885_buf_queue - first active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053939] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053943] cx23885[0]/0: [e235b540/1] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053948] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053952] cx23885[0]/0: [e235bb40/2] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053957] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053961] cx23885[0]/0: [e235b600/3] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053966] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053971] cx23885[0]/0: [cd6e7f00/4] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053975] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053979] cx23885[0]/0: [c7e9dcc0/5] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053984] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053988] cx23885[0]/0: [c7ea83c0/6] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053993] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.053997] cx23885[0]/0: [c345e900/7] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054002] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054006] cx23885[0]/0: [cf412840/8] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054011] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054015] cx23885[0]/0: [cf412180/9] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054020] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054024] cx23885[0]/0: [cf412000/10] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054029] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054033] cx23885[0]/0: [c8376780/11] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054038] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054042] cx23885[0]/0: [c8376480/12] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054047] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054052] cx23885[0]/0: [c948db40/13] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054056] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054061] cx23885[0]/0: [e59f8cc0/14] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054066] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054070] cx23885[0]/0: [e59f8480/15] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054074] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054078] cx23885[0]/0: [e59f8d80/16] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054083] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054087] cx23885[0]/0: [e59f8f00/17] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054092] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054096] cx23885[0]/0: [e59f8a80/18] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054101] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054105] cx23885[0]/0: [e59f8600/19] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054110] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054114] cx23885[0]/0: [e59f8540/20] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054119] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054123] cx23885[0]/0: [e59f8e40/21] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054128] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054132] cx23885[0]/0: [c921d240/22] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054137] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054141] cx23885[0]/0: [c7de60c0/23] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054145] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054150] cx23885[0]/0: [c7de6600/24] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054154] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054159] cx23885[0]/0: [cf0b00c0/25] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054163] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054167] cx23885[0]/0: [cf0b0480/26] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054172] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054176] cx23885[0]/0: [cf0b0840/27] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054181] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054185] cx23885[0]/0: [d09d8180/28] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054190] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054194] cx23885[0]/0: [c7f533c0/29] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054199] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054203] cx23885[0]/0: [f7517f00/30] cx23885_buf_queue - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054208] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:42 stephen-desktop kernel: [ 1718.054212] cx23885[0]/0: [f7517180/31] cx23885_buf_queue - append to active
qJun 21 14:38:43 stephen-desktop kernel: [ 1719.046792] cx23885[0]/0: cx23885_timeout()
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046799] cx23885[0]/0: cx23885_stop_dma()
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046813] cx23885[0]/0: [e235b300/0] timeout - dma=0x06bd9000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046817] cx23885[0]/0: [e235b540/1] timeout - dma=0x254ab000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046822] cx23885[0]/0: [e235bb40/2] timeout - dma=0x255ae000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046826] cx23885[0]/0: [e235b600/3] timeout - dma=0x12bc9000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046831] cx23885[0]/0: [cd6e7f00/4] timeout - dma=0x06a11000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046837] cx23885[0]/0: [c7e9dcc0/5] timeout - dma=0x0af3b000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046841] cx23885[0]/0: [c7ea83c0/6] timeout - dma=0x06beb000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046846] cx23885[0]/0: [c345e900/7] timeout - dma=0x0a421000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046851] cx23885[0]/0: [cf412840/8] timeout - dma=0x09775000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046856] cx23885[0]/0: [cf412180/9] timeout - dma=0x0af00000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046861] cx23885[0]/0: [cf412000/10] timeout - dma=0x0918e000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046866] cx23885[0]/0: [c8376780/11] timeout - dma=0x3751e000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046871] cx23885[0]/0: [c8376480/12] timeout - dma=0x36bf4000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046876] cx23885[0]/0: [c948db40/13] timeout - dma=0x1fa90000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046881] cx23885[0]/0: [e59f8cc0/14] timeout - dma=0x065f5000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046885] cx23885[0]/0: [e59f8480/15] timeout - dma=0x0e5d9000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046890] cx23885[0]/0: [e59f8d80/16] timeout - dma=0x06563000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046895] cx23885[0]/0: [e59f8f00/17] timeout - dma=0x0d539000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046900] cx23885[0]/0: [e59f8a80/18] timeout - dma=0x0b9a3000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046905] cx23885[0]/0: [e59f8600/19] timeout - dma=0x0c4d3000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046910] cx23885[0]/0: [e59f8540/20] timeout - dma=0x0b7d3000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046914] cx23885[0]/0: [e59f8e40/21] timeout - dma=0x0d74b000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046919] cx23885[0]/0: [c921d240/22] timeout - dma=0x0837b000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046924] cx23885[0]/0: [c7de60c0/23] timeout - dma=0x0902a000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046929] cx23885[0]/0: [c7de6600/24] timeout - dma=0x0c171000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046934] cx23885[0]/0: [cf0b00c0/25] timeout - dma=0x3725a000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046939] cx23885[0]/0: [cf0b0480/26] timeout - dma=0x06482000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046944] cx23885[0]/0: [cf0b0840/27] timeout - dma=0x377cc000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046949] cx23885[0]/0: [d09d8180/28] timeout - dma=0x254a7000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046954] cx23885[0]/0: [c7f533c0/29] timeout - dma=0x258e4000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046958] cx23885[0]/0: [f7517f00/30] timeout - dma=0x25a47000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046963] cx23885[0]/0: [f7517180/31] timeout - dma=0x25aad000
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046967] cx23885[0]/0: restarting queue
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046975] cx23885[0]/0: queue is empty - first active
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046981] cx23885[0]/0: cx23885_start_dma() w: 752, h: 32, f: 2
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.046987] cx23885[0]/0: cx23885_sram_channel_setup() Configuring channel [TS1 B]
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.047205] cx23885[0]/0: cx23885_start_dma() enabling TS int's and DMA
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.047217] cx23885[0]/0: [e235b300/0] cx23885_buf_queue - first active
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.047223] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.047229] cx23885[0]/0: [e235b540/1] cx23885_buf_queue - append to active
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.047234] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.047239] cx23885[0]/0: [e235bb40/2] cx23885_buf_queue - append to active
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.047245] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.047250] cx23885[0]/0: [e235b600/3] cx23885_buf_queue - append to active
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.047255] cx23885[0]/0: queue is not empty - append to active
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.047261] cx23885[0]/0: [cd6e7f00/4] cx23885_buf_queue - append to active
Jun 21 14:38:43 stephen-desktop kernel: [ 1719.047266] cx23885[0]/0: queue is not empty - append to active

--
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Attachment: DViCO_FUSIONHDTV_DVB_T_DUAL_EXP_v5.patch
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