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Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0481-smsc95xx-dynamically-fix-up-TX-buffer-alignment-with.patch')
-rw-r--r--target/linux/brcm2708/patches-4.19/950-0481-smsc95xx-dynamically-fix-up-TX-buffer-alignment-with.patch62
1 files changed, 0 insertions, 62 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0481-smsc95xx-dynamically-fix-up-TX-buffer-alignment-with.patch b/target/linux/brcm2708/patches-4.19/950-0481-smsc95xx-dynamically-fix-up-TX-buffer-alignment-with.patch
deleted file mode 100644
index db7d9a9318..0000000000
--- a/target/linux/brcm2708/patches-4.19/950-0481-smsc95xx-dynamically-fix-up-TX-buffer-alignment-with.patch
+++ /dev/null
@@ -1,62 +0,0 @@
-From 706a1636883d35b9399be0003d9e36d0f46fd6c5 Mon Sep 17 00:00:00 2001
-From: P33M <p33m@github.com>
-Date: Wed, 1 May 2019 17:04:32 +0100
-Subject: [PATCH 481/725] smsc95xx: dynamically fix up TX buffer alignment with
- padding bytes
-
-dwc_otg requires a 32-bit aligned buffer start address, otherwise
-expensive bounce buffers are used. The LAN951x hardware can skip up to
-3 bytes between the TX header and the start of frame data, which can
-be used to force alignment of the URB passed to dwc_otg.
-
-As found in https://github.com/raspberrypi/linux/issues/2924
----
- drivers/net/usb/smsc95xx.c | 12 +++++++-----
- drivers/net/usb/smsc95xx.h | 2 +-
- 2 files changed, 8 insertions(+), 6 deletions(-)
-
---- a/drivers/net/usb/smsc95xx.c
-+++ b/drivers/net/usb/smsc95xx.c
-@@ -2082,7 +2082,9 @@ static struct sk_buff *smsc95xx_tx_fixup
- struct sk_buff *skb, gfp_t flags)
- {
- bool csum = skb->ip_summed == CHECKSUM_PARTIAL;
-- int overhead = csum ? SMSC95XX_TX_OVERHEAD_CSUM : SMSC95XX_TX_OVERHEAD;
-+ unsigned int align_bytes = -((uintptr_t)skb->data) & 0x3;
-+ int overhead = csum ? SMSC95XX_TX_OVERHEAD_CSUM + align_bytes
-+ : SMSC95XX_TX_OVERHEAD + align_bytes;
- u32 tx_cmd_a, tx_cmd_b;
-
- /* We do not advertise SG, so skbs should be already linearized */
-@@ -2116,16 +2118,16 @@ static struct sk_buff *smsc95xx_tx_fixup
- }
- }
-
-- skb_push(skb, 4);
-- tx_cmd_b = (u32)(skb->len - 4);
-+ skb_push(skb, 4 + align_bytes);
-+ tx_cmd_b = (u32)(skb->len - 4 - align_bytes);
- if (csum)
- tx_cmd_b |= TX_CMD_B_CSUM_ENABLE;
- cpu_to_le32s(&tx_cmd_b);
- memcpy(skb->data, &tx_cmd_b, 4);
-
- skb_push(skb, 4);
-- tx_cmd_a = (u32)(skb->len - 8) | TX_CMD_A_FIRST_SEG_ |
-- TX_CMD_A_LAST_SEG_;
-+ tx_cmd_a = (u32)(skb->len - 8 - align_bytes) | TX_CMD_A_FIRST_SEG_ |
-+ (align_bytes << 16) | TX_CMD_A_LAST_SEG_;
- cpu_to_le32s(&tx_cmd_a);
- memcpy(skb->data, &tx_cmd_a, 4);
-
---- a/drivers/net/usb/smsc95xx.h
-+++ b/drivers/net/usb/smsc95xx.h
-@@ -21,7 +21,7 @@
- #define _SMSC95XX_H
-
- /* Tx command words */
--#define TX_CMD_A_DATA_OFFSET_ (0x001F0000) /* Data Start Offset */
-+#define TX_CMD_A_DATA_OFFSET_ (0x00030000) /* Data Start Offset */
- #define TX_CMD_A_FIRST_SEG_ (0x00002000) /* First Segment */
- #define TX_CMD_A_LAST_SEG_ (0x00001000) /* Last Segment */
- #define TX_CMD_A_BUF_SIZE_ (0x000007FF) /* Buffer Size */