Messages in this thread |  | | Subject | Re: pci_pool reap? | Date | Mon, 11 Feb 2002 03:12:06 +0000 (GMT) | From | Alan Cox <> |
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> There is a certain controversy about pci_free_consistent called > from an interrupt. It seems that most architectures would > have no problems, and only arm is problematic. RMK says that
The discussion was about pci_alloc_consistent. The free case seems to be explicitly disallowed in all cases.
(from DMA-mapping.txt)
To unmap and free such a DMA region, you call:
pci_free_consistent(dev, size, cpu_addr, dma_handle);
where dev, size are the same as in the above call and cpu_addr and dma_handle are the values pci_alloc_consistent returned to you. This function may not be called in interrupt context. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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