kernel: remove linux 4.1 support

The only target still referencing it is omap24xx, and it is marked as
broken.

Signed-off-by: Felix Fietkau <nbd@nbd.name>

1 files changed, 0 insertions, 54 deletions

diff --git a/target/linux/generic/patches-4.1/081-solos-pci-Increase-headroom-on-received-packets.patch b/target/linux/generic/patches-4.1/081-solos-pci-Increase-headroom-on-received-packets.patch
deleted file mode 100644
index 605f57a6ce..0000000000
--- a/target/linux/generic/patches-4.1/081-solos-pci-Increase-headroom-on-received-packets.patch
+++ /dev/null
@@ -1,54 +0,0 @@
-From: David Woodhouse <dwmw2@infradead.org>
-Date: Thu, 17 Sep 2015 11:19:53 +0100
-Subject: [PATCH] solos-pci: Increase headroom on received packets
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-A comment in include/linux/skbuff.h says that:
-
- * Various parts of the networking layer expect at least 32 bytes of
- * headroom, you should not reduce this.
-
-This was demonstrated by a panic when handling fragmented IPv6 packets:
-http://marc.info/?l=linux-netdev&m=144236093519172&w=2
-
-It's not entirely clear if that comment is still valid — and if it is,
-perhaps netif_rx() ought to be enforcing it with a warning.
-
-But either way, it is rather stupid from a performance point of view
-for us to be receiving packets into a buffer which doesn't have enough
-room to prepend an Ethernet header — it means that *every* incoming
-packet is going to be need to be reallocated. So let's fix that.
-
-Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
----
-
---- a/drivers/atm/solos-pci.c
-+++ b/drivers/atm/solos-pci.c
-@@ -805,7 +805,12 @@ static void solos_bh(unsigned long card_
- 					continue;
- 				}
- 
--				skb = alloc_skb(size + 1, GFP_ATOMIC);
-+				/* Use netdev_alloc_skb() because it adds NET_SKB_PAD of
-+				 * headroom, and ensures we can route packets back out an
-+				 * Ethernet interface (for example) without having to
-+				 * reallocate. Adding NET_IP_ALIGN also ensures that both
-+				 * PPPoATM and PPPoEoBR2684 packets end up aligned. */
-+				skb = netdev_alloc_skb_ip_align(NULL, size + 1);
- 				if (!skb) {
- 					if (net_ratelimit())
- 						dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n");
-@@ -869,7 +874,10 @@ static void solos_bh(unsigned long card_
- 		/* Allocate RX skbs for any ports which need them */
- 		if (card->using_dma && card->atmdev[port] &&
- 		    !card->rx_skb[port]) {
--			struct sk_buff *skb = alloc_skb(RX_DMA_SIZE, GFP_ATOMIC);
-+			/* Unlike the MMIO case (qv) we can't add NET_IP_ALIGN
-+			 * here; the FPGA can only DMA to addresses which are
-+			 * aligned to 4 bytes. */
-+			struct sk_buff *skb = dev_alloc_skb(RX_DMA_SIZE);
- 			if (skb) {
- 				SKB_CB(skb)->dma_addr =
- 					dma_map_single(&card->dev->dev, skb->data,