[rb532] update 2.6.27 patches with upstream fixes from git repository and mailing-lists. via-rhine is still broken, thus not switching to 2.6.27 as default.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14173 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 36 insertions, 0 deletions

diff --git a/target/linux/rb532/patches-2.6.27/017-korina_fix_loop_back_rx_desc.patch b/target/linux/rb532/patches-2.6.27/017-korina_fix_loop_back_rx_desc.patch
new file mode 100644
index 000000000..0484f2cbe
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.27/017-korina_fix_loop_back_rx_desc.patch
@@ -0,0 +1,36 @@
+After the last loop iteration, i has the value RC32434_NUM_RDS and
+therefore leads to an index overflow when used afterwards to address the
+last element. This is yet another another bug introduced when rewriting
+parts of the driver for upstream preparation, as the original driver
+used 'RC32434_NUM_RDS - 1' instead.
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+---
+ drivers/net/korina.c |    9 +++++----
+ 1 files changed, 5 insertions(+), 4 deletions(-)
+
+diff --git a/drivers/net/korina.c b/drivers/net/korina.c
+index 1d6e48e..67fbdf4 100644
+--- a/drivers/net/korina.c
++++ b/drivers/net/korina.c
+@@ -769,11 +769,12 @@ static void korina_alloc_ring(struct net_device *dev)
+ 		lp->rd_ring[i].link = CPHYSADDR(&lp->rd_ring[i+1]);
+ 	}
+ 
+-	/* loop back */
+-	lp->rd_ring[i].link = CPHYSADDR(&lp->rd_ring[0]);
+-	lp->rx_next_done  = 0;
++	/* loop back receive descriptors, so the last
++	 * descriptor points to the first one */
++	lp->rd_ring[i - 1].link = CPHYSADDR(&lp->rd_ring[0]);
++	lp->rd_ring[i - 1].control |= DMA_DESC_COD;
+ 
+-	lp->rd_ring[i].control |= DMA_DESC_COD;
++	lp->rx_next_done  = 0;
+ 	lp->rx_chain_head = 0;
+ 	lp->rx_chain_tail = 0;
+ 	lp->rx_chain_status = desc_empty;
+-- 
+1.5.6.4
+
+