From 539e6f8cffe9299fbf813ad574535b90ac370031 Mon Sep 17 00:00:00 2001 From: Michael Buesch Date: Fri, 28 Mar 2008 11:46:58 +0100 Subject: [PATCH] b43: Add DMA mapping failure messages This adds messages for some DMA mapping failures. These are useful for debugging DMA address problems, as they appear on x86_64 machines with IOMMU enabled. Signed-off-by: Michael Buesch Signed-off-by: John W. Linville --- drivers/net/wireless/b43/dma.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/b43/dma.c b/drivers/net/wireless/b43/dma.c index cfbc1a26f601..948eb1fe916b 100644 --- a/drivers/net/wireless/b43/dma.c +++ b/drivers/net/wireless/b43/dma.c @@ -619,6 +619,7 @@ static int setup_rx_descbuffer(struct b43_dmaring *ring, } if (b43_dma_mapping_error(ring, dmaaddr, ring->rx_buffersize, 0)) { + b43err(ring->dev->wl, "RX DMA buffer allocation failed\n"); dev_kfree_skb_any(skb); return -EIO; } @@ -874,8 +875,12 @@ struct b43_dmaring *b43_setup_dmaring(struct b43_wldev *dev, DMA_TO_DEVICE); if (b43_dma_mapping_error(ring, dma_test, - b43_txhdr_size(dev), 1)) + b43_txhdr_size(dev), 1)) { + + b43err(dev->wl, + "TXHDR DMA allocation failed\n"); goto err_kfree_txhdr_cache; + } } dma_unmap_single(dev->dev->dev, -- 2.20.1