mirror of
https://github.com/openwrt/openwrt.git
synced 2025-01-05 13:34:19 +00:00
1e95f9b3ea
* Fix some bugs in the driver * Add missing clock and reset references in dts * Rename mdio-bus to mdio so the driver find it Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
62 lines
1.8 KiB
Diff
62 lines
1.8 KiB
Diff
From 2cee757eaf5cc6175bc0ac7b0b808794124ec40a Mon Sep 17 00:00:00 2001
|
|
From: Hauke Mehrtens <hauke@hauke-m.de>
|
|
Date: Mon, 17 Feb 2020 23:40:14 +0100
|
|
Subject: [PATCH 1/3] ag71xx: Handle allocation errors in ag71xx_rings_init()
|
|
|
|
Free the allocated resources in ag71xx_rings_init() in case
|
|
ag71xx_ring_rx_init() returns an error.
|
|
|
|
This is only a potential problem, I did not ran into this one.
|
|
|
|
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
|
|
Fixes: d51b6ce441d3 ("net: ethernet: add ag71xx driver")
|
|
---
|
|
drivers/net/ethernet/atheros/ag71xx.c | 22 ++++++++++++++++++----
|
|
1 file changed, 18 insertions(+), 4 deletions(-)
|
|
|
|
--- a/drivers/net/ethernet/atheros/ag71xx.c
|
|
+++ b/drivers/net/ethernet/atheros/ag71xx.c
|
|
@@ -1133,6 +1133,7 @@ static int ag71xx_rings_init(struct ag71
|
|
struct ag71xx_ring *tx = &ag->tx_ring;
|
|
struct ag71xx_ring *rx = &ag->rx_ring;
|
|
int ring_size, tx_size;
|
|
+ int ret;
|
|
|
|
ring_size = BIT(tx->order) + BIT(rx->order);
|
|
tx_size = BIT(tx->order);
|
|
@@ -1145,9 +1146,8 @@ static int ag71xx_rings_init(struct ag71
|
|
ring_size * AG71XX_DESC_SIZE,
|
|
&tx->descs_dma, GFP_KERNEL);
|
|
if (!tx->descs_cpu) {
|
|
- kfree(tx->buf);
|
|
- tx->buf = NULL;
|
|
- return -ENOMEM;
|
|
+ ret = -ENOMEM;
|
|
+ goto err_free_buf;
|
|
}
|
|
|
|
rx->buf = &tx->buf[tx_size];
|
|
@@ -1155,7 +1155,21 @@ static int ag71xx_rings_init(struct ag71
|
|
rx->descs_dma = tx->descs_dma + tx_size * AG71XX_DESC_SIZE;
|
|
|
|
ag71xx_ring_tx_init(ag);
|
|
- return ag71xx_ring_rx_init(ag);
|
|
+ ret = ag71xx_ring_rx_init(ag);
|
|
+ if (ret)
|
|
+ goto err_free_dma;
|
|
+
|
|
+ return 0;
|
|
+
|
|
+err_free_dma:
|
|
+ dma_free_coherent(&ag->pdev->dev, ring_size * AG71XX_DESC_SIZE,
|
|
+ tx->descs_cpu, tx->descs_dma);
|
|
+ rx->buf = NULL;
|
|
+err_free_buf:
|
|
+ kfree(tx->buf);
|
|
+ tx->buf = NULL;
|
|
+
|
|
+ return ret;
|
|
}
|
|
|
|
static void ag71xx_rings_free(struct ag71xx *ag)
|