mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 15:02:32 +00:00
f8d5bd20b3
This fixes traffic stalls after ifdown & ifup. Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
44 lines
1.4 KiB
Diff
44 lines
1.4 KiB
Diff
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
|
|
Date: Tue, 22 Jun 2021 07:05:04 +0200
|
|
Subject: [PATCH] net: broadcom: bcm4908_enet: reset DMA rings sw indexes
|
|
properly
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
Resetting software indexes in bcm4908_dma_alloc_buf_descs() is not
|
|
enough as it's called during device probe only. Driver resets DMA on
|
|
every .ndo_open callback and it's required to reset indexes then.
|
|
|
|
This fixes inconsistent rings state and stalled traffic after interface
|
|
down & up sequence.
|
|
|
|
Fixes: 4feffeadbcb2 ("net: broadcom: bcm4908enet: add BCM4908 controller driver")
|
|
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
|
|
---
|
|
drivers/net/ethernet/broadcom/bcm4908_enet.c | 6 +++---
|
|
1 file changed, 3 insertions(+), 3 deletions(-)
|
|
|
|
--- a/drivers/net/ethernet/broadcom/bcm4908_enet.c
|
|
+++ b/drivers/net/ethernet/broadcom/bcm4908_enet.c
|
|
@@ -174,9 +174,6 @@ static int bcm4908_dma_alloc_buf_descs(s
|
|
if (!ring->slots)
|
|
goto err_free_buf_descs;
|
|
|
|
- ring->read_idx = 0;
|
|
- ring->write_idx = 0;
|
|
-
|
|
return 0;
|
|
|
|
err_free_buf_descs:
|
|
@@ -303,6 +300,9 @@ static void bcm4908_enet_dma_ring_init(s
|
|
|
|
enet_write(enet, ring->st_ram_block + ENET_DMA_CH_STATE_RAM_BASE_DESC_PTR,
|
|
(uint32_t)ring->dma_addr);
|
|
+
|
|
+ ring->read_idx = 0;
|
|
+ ring->write_idx = 0;
|
|
}
|
|
|
|
static void bcm4908_enet_dma_uninit(struct bcm4908_enet *enet)
|