kernel: delete Linux 5.4 config and patches

As the upcoming release will be based on Linux 5.10 only, remove all
kernel configuration as well as patches for Linux 5.4.
There were no targets still actively using Linux 5.4.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 3a14580411adfb75f9a44eded9f41245b9e44606)

1 files changed, 0 insertions, 67 deletions

diff --git a/target/linux/generic/pending-5.4/770-08-net-ethernet-mtk_eth_soc-cache-hardware-pointer-of-l.patch b/target/linux/generic/pending-5.4/770-08-net-ethernet-mtk_eth_soc-cache-hardware-pointer-of-l.patch
deleted file mode 100644
index b280b6cf4b..0000000000
--- a/target/linux/generic/pending-5.4/770-08-net-ethernet-mtk_eth_soc-cache-hardware-pointer-of-l.patch
+++ /dev/null
@@ -1,67 +0,0 @@
-From: Felix Fietkau <nbd@nbd.name>
-Date: Thu, 27 Aug 2020 06:32:03 +0200
-Subject: [PATCH] net: ethernet: mtk_eth_soc: cache hardware pointer of last
- freed tx descriptor
-
-The value is only updated by the CPU, so it is cheaper to access from the ring
-data structure than from a hardware register
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
-+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
-@@ -1379,7 +1379,7 @@ static int mtk_poll_tx_qdma(struct mtk_e
- 	struct mtk_tx_buf *tx_buf;
- 	u32 cpu, dma;
- 
--	cpu = mtk_r32(eth, MTK_QTX_CRX_PTR);
-+	cpu = ring->last_free_ptr;
- 	dma = mtk_r32(eth, MTK_QTX_DRX_PTR);
- 
- 	desc = mtk_qdma_phys_to_virt(ring, cpu);
-@@ -1413,6 +1413,7 @@ static int mtk_poll_tx_qdma(struct mtk_e
- 		cpu = next_cpu;
- 	}
- 
-+	ring->last_free_ptr = cpu;
- 	mtk_w32(eth, cpu, MTK_QTX_CRX_PTR);
- 
- 	return budget;
-@@ -1613,6 +1614,7 @@ static int mtk_tx_alloc(struct mtk_eth *
- 	atomic_set(&ring->free_count, MTK_DMA_SIZE - 2);
- 	ring->next_free = &ring->dma[0];
- 	ring->last_free = &ring->dma[MTK_DMA_SIZE - 1];
-+	ring->last_free_ptr = (u32)(ring->phys + ((MTK_DMA_SIZE - 1) * sz));
- 	ring->thresh = MAX_SKB_FRAGS;
- 
- 	/* make sure that all changes to the dma ring are flushed before we
-@@ -1626,9 +1628,7 @@ static int mtk_tx_alloc(struct mtk_eth *
- 		mtk_w32(eth,
- 			ring->phys + ((MTK_DMA_SIZE - 1) * sz),
- 			MTK_QTX_CRX_PTR);
--		mtk_w32(eth,
--			ring->phys + ((MTK_DMA_SIZE - 1) * sz),
--			MTK_QTX_DRX_PTR);
-+		mtk_w32(eth, ring->last_free_ptr, MTK_QTX_DRX_PTR);
- 		mtk_w32(eth, (QDMA_RES_THRES << 8) | QDMA_RES_THRES,
- 			MTK_QTX_CFG(0));
- 	} else {
---- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
-+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
-@@ -644,6 +644,7 @@ struct mtk_tx_buf {
-  * @phys:		The physical addr of tx_buf
-  * @next_free:		Pointer to the next free descriptor
-  * @last_free:		Pointer to the last free descriptor
-+ * @last_free_ptr:	Hardware pointer value of the last free descriptor
-  * @thresh:		The threshold of minimum amount of free descriptors
-  * @free_count:		QDMA uses a linked list. Track how many free descriptors
-  *			are present
-@@ -654,6 +655,7 @@ struct mtk_tx_ring {
- 	dma_addr_t phys;
- 	struct mtk_tx_dma *next_free;
- 	struct mtk_tx_dma *last_free;
-+	u32 last_free_ptr;
- 	u16 thresh;
- 	atomic_t free_count;
- 	int dma_size;