From: Maksim Kiselev <bigunclemax@gmail.com>
Date: Wed, 19 Jul 2023 06:53:37 +0000 (+0300)
Subject: net: axi_emac: Change return value to -EAGAIN if RX is not ready
X-Git-Tag: v2025.01-rc5-pxa1908~931^2~3
X-Git-Url: http://git.dujemihanovic.xyz/projects?a=commitdiff_plain;h=3fb4ef7d39abbb2f8f6cd349e4af11082bf8c8c4;p=u-boot.git

net: axi_emac: Change return value to -EAGAIN if RX is not ready

If there is no incoming package than axiemac_recv will return -1 which
in turn leads to printing `eth_rx: recv() returned error -1` error
message in eth_rx function. But missing a package is not an fatal error,
so return -EAGAIN in that case would be more suitable.

Signed-off-by: Maksim Kiselev <bigunclemax@gmail.com>
Link: https://lore.kernel.org/r/20230719065337.69280-1-bigunclemax@gmail.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
---

diff --git a/drivers/net/xilinx_axi_emac.c b/drivers/net/xilinx_axi_emac.c
index 3e9919993d..39cb3cc260 100644
--- a/drivers/net/xilinx_axi_emac.c
+++ b/drivers/net/xilinx_axi_emac.c
@@ -748,7 +748,7 @@ static int axiemac_recv(struct udevice *dev, int flags, uchar **packetp)
 
 	/* Wait for an incoming packet */
 	if (!isrxready(priv))
-		return -1;
+		return -EAGAIN;
 
 	debug("axiemac: RX data ready\n");