bcm27xx: add linux 5.4 support

Tested on bcm2710 (Raspberry Pi 3B).

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 47 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0003-smsx95xx-fix-crimes-against-truesize.patch b/target/linux/bcm27xx/patches-5.4/950-0003-smsx95xx-fix-crimes-against-truesize.patch
new file mode 100644
index 0000000000..16a9bcd22a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0003-smsx95xx-fix-crimes-against-truesize.patch
@@ -0,0 +1,47 @@
+From bb137167247980c89005d607e5e89417f8f59634 Mon Sep 17 00:00:00 2001
+From: Steve Glendinning <steve.glendinning@smsc.com>
+Date: Thu, 19 Feb 2015 18:47:12 +0000
+Subject: [PATCH] smsx95xx: fix crimes against truesize
+
+smsc95xx is adjusting truesize when it shouldn't, and following a recent patch from Eric this is now triggering warnings.
+
+This patch stops smsc95xx from changing truesize.
+
+Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com>
+---
+ drivers/net/usb/smsc95xx.c | 10 ++++++++--
+ 1 file changed, 8 insertions(+), 2 deletions(-)
+
+--- a/drivers/net/usb/smsc95xx.c
++++ b/drivers/net/usb/smsc95xx.c
+@@ -70,6 +70,10 @@ static bool turbo_mode = true;
+ module_param(turbo_mode, bool, 0644);
+ MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction");
+ 
++static bool truesize_mode = false;
++module_param(truesize_mode, bool, 0644);
++MODULE_PARM_DESC(truesize_mode, "Report larger truesize value");
++
+ static int __must_check __smsc95xx_read_reg(struct usbnet *dev, u32 index,
+ 					    u32 *data, int in_pm)
+ {
+@@ -1957,7 +1961,8 @@ static int smsc95xx_rx_fixup(struct usbn
+ 				if (dev->net->features & NETIF_F_RXCSUM)
+ 					smsc95xx_rx_csum_offload(skb);
+ 				skb_trim(skb, skb->len - 4); /* remove fcs */
+-				skb->truesize = size + sizeof(struct sk_buff);
++				if (truesize_mode)
++					skb->truesize = size + sizeof(struct sk_buff);
+ 
+ 				return 1;
+ 			}
+@@ -1975,7 +1980,8 @@ static int smsc95xx_rx_fixup(struct usbn
+ 			if (dev->net->features & NETIF_F_RXCSUM)
+ 				smsc95xx_rx_csum_offload(ax_skb);
+ 			skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */
+-			ax_skb->truesize = size + sizeof(struct sk_buff);
++			if (truesize_mode)
++				ax_skb->truesize = size + sizeof(struct sk_buff);
+ 
+ 			usbnet_skb_return(dev, ax_skb);
+ 		}