From: Francois Romieu <romieu@fr.zoreil.com>
Date: Wed, 9 May 2012 00:00:06 +0200
From: Julien Ducourthial <redacted>
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 <redacted>
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Applied and queued up for -stable, thanks.