Messages in this thread | | | Date | Wed, 8 Aug 2012 09:28:17 +0530 | From | Venu Byravarasu <> | Subject | What is the significance of coherent_dma_mask? |
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Hi,
Some of the USB drivers are setting coherent_dma_mask & many others are not doing it. From the description present in the comment beside this field in device.h, I could not understand its real significance.
Can some one plz let me know its real need and use case where it is mandatory to use it?
Thanks, Venu
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