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Benjamin Herrenschmidt wrote: > I've added a wmb() in tw32_rx_mbox() and tw32_tx_mbox() and can still > reproduce the problem. I've also done a 2 days run without TSO enabled > without a failure (my test program normally fails after a couple of > minutes). > Hi Ben, The code is a bit tricky. It uses function pointers for the various register read/write methods. For the 5780, I believe it will be assigned a simple writel() and not tg3_write32_tx_mbox(). Can you double check to make sure you have actually added the wmb()? It's probably easiest to just add the wmb() in tg3_xmit_dma_bug() before the tw32_tx_mbox(). - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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