Julien Ducourthial 477206a018
r8169: fix unsigned int wraparound with TSO ...
The r8169 may get stuck or show bad behaviour after activating TSO :
the net_device is not stopped when it has no more TX descriptors.
This problem comes from TX_BUFS_AVAIL which may reach -1 when all
transmit descriptors are in use. The patch simply tries to keep positive
values.
Tested with 8111d(onboard) on a D510MO, and with 8111e(onboard) on a
Zotac 890GXITX.
Signed-off-by: Julien Ducourthial <jducourt@free.fr >
Acked-by: Francois Romieu <romieu@fr.zoreil.com >
Signed-off-by: David S. Miller <davem@davemloft.net >
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477206a018