From 539e6f8cffe9299fbf813ad574535b90ac370031 Mon Sep 17 00:00:00 2001
From: Michael Buesch <mb@bu3sch.de>
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 <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
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 cfbc1a26f60..948eb1fe916 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,
--
2.41.3