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net: cdc_ncm: no point in filling up the NTBs if we send ZLPs
authorBjørn Mork <[email protected]>
Fri, 1 Nov 2013 10:16:49 +0000 (11:16 +0100)
committerDavid S. Miller <[email protected]>
Sat, 2 Nov 2013 06:02:03 +0000 (02:02 -0400)
commit4d619f625a6011618de9fccc4b282d314d792897
tree6d5d366360ae74fe8cfde8a15170f25f9ae7df36tree | snapshot
parent9fe0234c0bf8b3c412df0adc9ebbe6a1e95daf51commit | diff
net: cdc_ncm: no point in filling up the NTBs if we send ZLPs

Padding NTBs to max size is part of the support for devices
optimizing their DMA transfers. This optimization depends on
max sized NTBs not being ZLP terminated. So we are much better
off dropping the padding if we are going to send a ZLP anyway.

Cc: Alexey Orishko <[email protected]>
Signed-off-by: Bjørn Mork <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
drivers/net/usb/cdc_ncm.c diff | blob | blame | history
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