mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-08-23 13:34:37 +03:00
ag71xx: fix a memory corruption bug that happens if you flood the interface with packets while it's being brought down
fixes boot time crashes under load reported by matteo git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22054 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
parent
3e4cfbc540
commit
950d12ef69
@ -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);
|
||||
|
Loading…
Reference in New Issue
Block a user