Hi, I have ported Davinci DM6467T support to the 2.6.33.9-rt for a project. I am running into the following issue every time I run the encode application gets a DMA interrupt. I have referred to the various other instances of the same issue on older RT kernels, but haven't gathered a solution for the same. Kindly help me understand the issue / throw some light on how I can approach the solution. Any thoughts are greatly appreciated. Aug 16 14:44:01 dm6467t-evm user.debug kernel: dma complete <INSERTED BY B.J this is when the DMA ISR is called> Aug 16 14:44:01 dm6467t-evm user.err kernel: BUG: sleeping function called from invalid context at kernel/rtmutex.c:644 Aug 16 14:44:01 dm6467t-evm user.err kernel: pcnt: 0 0 in_atomic(): 0, irqs_disabled(): 128, pid: 46, name: irq/16-edma Aug 16 14:44:01 dm6467t-evm user.debug kernel: Backtrace: Aug 16 14:44:01 dm6467t-evm user.debug kernel: [<c002f60c>] (dump_backtrace+0x0/0x114) from [<c02feb38>] (dump_stack+0x18/0x1c) Aug 16 14:44:01 dm6467t-evm user.debug kernel: r7:00002068 r6:00002050 r5:00000000 r4:00000284 Aug 16 14:44:01 dm6467t-evm user.debug kernel: [<c02feb20>] (dump_stack+0x0/0x1c) from [<c0039ae4>] (__might_sleep+0xfc/0x11c) Aug 16 14:44:01 dm6467t-evm user.debug kernel: [<c00399e8>] (__might_sleep+0x0/0x11c) from [<c03012e4>] (rt_spin_lock+0x38/0x64) Aug 16 14:44:01 dm6467t-evm user.debug kernel: r5:c20e6888 r4:c20e6888 Aug 16 14:44:01 dm6467t-evm user.debug kernel: [<c03012ac>] (rt_spin_lock+0x0/0x64) from [<c0039378>] (complete+0x20/0x58) Aug 16 14:44:01 dm6467t-evm user.debug kernel: r5:c20e6888 r4:c20e6884 Aug 16 14:44:01 dm6467t-evm user.debug kernel: [<c0039358>] (complete+0x0/0x58) from [<bf02f42c>] (dmaIsr+0x4c/0x70 [logos_tsif]) Aug 16 14:44:01 dm6467t-evm user.debug kernel: r5:bf030930 r4:a0000013 Aug 16 14:44:01 dm6467t-evm user.debug kernel: [<bf02f3e0>] (dmaIsr+0x0/0x70 [logos_tsif]) from [<c0035958>] (dma_irq_handler+0x114/0x158) Aug 16 14:44:01 dm6467t-evm user.debug kernel: r5:00000005 r4:00000005 Aug 16 14:44:01 dm6467t-evm user.debug kernel: [<c0035844>] (dma_irq_handler+0x0/0x158) from [<c006fd34>] (irq_thread+0xd4/0x238) Aug 16 14:44:01 dm6467t-evm user.debug kernel: [<c006fc60>] (irq_thread+0x0/0x238) from [<c005725c>] (kthread+0x88/0x90) Aug 16 14:44:01 dm6467t-evm user.debug kernel: [<c00571d4>] (kthread+0x0/0x90) from [<c0044990>] (do_exit+0x0/0x604) Aug 16 14:44:01 dm6467t-evm user.debug kernel: r7:00000000 r6:00000000 r5:00000000 r4:00000000 Please let me know if you need any other information regarding the issue. Thanks a lot. Best Regards, Roshni -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
