fm_eth_recv() returns -1 if the first receive descriptor is empty.
net_lwip_rx() only treats -EAGAIN as a non-fatal empty receive, so DHCP
can abort on an idle poll now that it checks net_lwip_poll().
Initialize the return value to -EAGAIN instead. Leave received-frame
handling and the zero return after discarding erroneous frames unchanged.
Fixes: 53a0ca3757fe ("net: lwip: finish DHCP before starting autoload")
Signed-off-by: James Hilliard <[email protected]>
---
drivers/net/fm/eth.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/fm/eth.c b/drivers/net/fm/eth.c
index f0e7c0eca42..8b44a8ffae8 100644
--- a/drivers/net/fm/eth.c
+++ b/drivers/net/fm/eth.c
@@ -618,7 +618,7 @@ static int fm_eth_recv(struct udevice *dev, int flags,
uchar **packetp)
struct fm_port_bd *rxbd;
u32 buf_lo, buf_hi;
u16 status, len;
- int ret = -1;
+ int ret = -EAGAIN;
u8 *data;
fm_eth = dev_get_priv(dev);
--
2.53.0
