linux-ti335x-psp 3.2: update to v3.2.11

Also add script used to generate patches and SRC_URI

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
Signed-off-by: Denys Dmytriyenko <denys@ti.com>

1 files changed, 72 insertions, 0 deletions

diff --git a/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.9/0062-davinci_emac-Do-not-free-all-rx-dma-descriptors-duri.patch b/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.9/0062-davinci_emac-Do-not-free-all-rx-dma-descriptors-duri.patch
new file mode 100644
index 00000000..51197fcf
--- /dev/null
+++ b/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.9/0062-davinci_emac-Do-not-free-all-rx-dma-descriptors-duri.patch
@@ -0,0 +1,72 @@
+From d0a93cc14174387dc5a6416d741a83fad831eae9 Mon Sep 17 00:00:00 2001
+From: Christian Riesch <christian.riesch@omicron.at>
+Date: Thu, 23 Feb 2012 01:14:17 +0000
+Subject: [PATCH 62/72] davinci_emac: Do not free all rx dma descriptors
+ during init
+
+commit 5d69703263d588dbb03f4e57091afd8942d96e6d upstream.
+
+This patch fixes a regression that was introduced by
+
+commit 0a5f38467765ee15478db90d81e40c269c8dda20
+davinci_emac: Add Carrier Link OK check in Davinci RX Handler
+
+Said commit adds a check whether the carrier link is ok. If the link is
+not ok, the skb is freed and no new dma descriptor added to the rx dma
+channel. This causes trouble during initialization when the carrier
+status has not yet been updated. If a lot of packets are received while
+netif_carrier_ok returns false, all dma descriptors are freed and the
+rx dma transfer is stopped.
+
+The bug occurs when the board is connected to a network with lots of
+traffic and the ifconfig down/up is done, e.g., when reconfiguring
+the interface with DHCP.
+
+The bug can be reproduced by flood pinging the davinci board while doing
+ifconfig eth0 down
+ifconfig eth0 up
+on the board.
+
+After that, the rx path stops working and the overrun value reported
+by ifconfig is counting up.
+
+This patch reverts commit 0a5f38467765ee15478db90d81e40c269c8dda20
+and instead issues warnings only if cpdma_chan_submit returns -ENOMEM.
+
+Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
+Cc: Cyril Chemparathy <cyril@ti.com>
+Cc: Sascha Hauer <s.hauer@pengutronix.de>
+Tested-by: Rajashekhara, Sudhakar <sudhakar.raj@ti.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/net/ethernet/ti/davinci_emac.c |    6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c
+index 815c797..22f2788 100644
+--- a/drivers/net/ethernet/ti/davinci_emac.c
++++ b/drivers/net/ethernet/ti/davinci_emac.c
+@@ -1007,7 +1007,7 @@ static void emac_rx_handler(void *token, int len, int status)
+        int                     ret;
+ 
+        /* free and bail if we are shutting down */
+-       if (unlikely(!netif_running(ndev) || !netif_carrier_ok(ndev))) {
++       if (unlikely(!netif_running(ndev))) {
+                dev_kfree_skb_any(skb);
+                return;
+        }
+@@ -1036,7 +1036,9 @@ static void emac_rx_handler(void *token, int len, int status)
+ recycle:
+        ret = cpdma_chan_submit(priv->rxchan, skb, skb->data,
+                        skb_tailroom(skb), GFP_KERNEL);
+-       if (WARN_ON(ret < 0))
++
++       WARN_ON(ret == -ENOMEM);
++       if (unlikely(ret < 0))
+                dev_kfree_skb_any(skb);
+ }
+ 
+-- 
+1.7.9.4
+