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-rw-r--r--target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
index a57b6d46fc..9fd41527dd 100644
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
@@ -454,6 +454,12 @@ static void ag71xx_dma_reset(struct ag71xx *ag)
ag71xx_wr(ag, AG71XX_REG_RX_CTRL, 0);
ag71xx_wr(ag, AG71XX_REG_TX_CTRL, 0);
+ /*
+ * give the hardware some time to really stop all rx/tx activity
+ * clearing the descriptors too early causes random memory corruption
+ */
+ mdelay(1);
+
/* clear descriptor addresses */
ag71xx_wr(ag, AG71XX_REG_TX_DESC, 0);
ag71xx_wr(ag, AG71XX_REG_RX_DESC, 0);