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Date: Thu, 20 Sep 2012 00:34:16 +0200 From: Francois Romieu <romieu@...zoreil.com> To: Joakim Tjernlund <Joakim.Tjernlund@...nsmode.se> Cc: netdev@...r.kernel.org Subject: Re: [PATCH 1/5] ucc_geth: Reduce IRQ off in xmit path Joakim Tjernlund <Joakim.Tjernlund@...nsmode.se> : > Currently ucc_geth_start_xmit wraps IRQ off for the > whole body just to be safe. > Reduce the IRQ off period to a minimum. It opens a window in ucc_geth_start_xmit where the skb slot in ugeth->tx_skbuff[txQ] is set and T_RA has not been written into the descriptor status. Consider a racing poll : the !skb test in ucc_geth_tx may not work as expected. -- Ueimor -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html