* What is the significance of coherent_dma_mask?
@ 2012-08-08 3:58 Venu Byravarasu
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From: Venu Byravarasu @ 2012-08-08 3:58 UTC (permalink / raw)
To: gregkh, rdunlap, lars, grant.likely, joe; +Cc: netdev, linux-kernel, swarren
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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