Tearing down an unitialized rx channel causes a pending address hole event to be queued. When booting linux it will report this pending as something like "Address Hole seen by USB_OTG at address 57fff584", since u-boot did not handled this interrupt. Prevent that by not tearing down the rx channel, when not receiving.
Signed-off-by: Jeroen Hofstee jeroen@myspectrum.nl --- To replicate this: - ROMcode must not use the emac - U-Boot must use the emac - only on cold start --- drivers/net/davinci_emac.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c index 427ad3e..0444795 100644 --- a/drivers/net/davinci_emac.c +++ b/drivers/net/davinci_emac.c @@ -598,7 +598,8 @@ static void davinci_eth_close(struct eth_device *dev) debug_emac("+ emac_close\n");
davinci_eth_ch_teardown(EMAC_CH_TX); /* TX Channel teardown */ - davinci_eth_ch_teardown(EMAC_CH_RX); /* RX Channel teardown */ + if (readl(&adap_emac->RXCONTROL) & 1) + davinci_eth_ch_teardown(EMAC_CH_RX); /* RX Channel teardown */
/* Reset EMAC module and disable interrupts in wrapper */ writel(1, &adap_emac->SOFTRESET);