[U-Boot] [PATCH] net: rtl8169: Fix return value for rtl_send_common

[Oleksandr Tymoshenko]

Return value of rtl_send_common propogates unmodified all the way
up to eth_send and further to API consumer if CONFIG_API is enabled.
Previously rtl_send_common returned number of bytes sent on success
which was erroneouly detected as error condition by API consumers
that checked for operation success by comparing return value with 0.

Switch rtl_send_common to use common convention: return 0 on success
and negative value for failure.

Cc: Stephen Warren <swarren at nvidia.com>
Cc: Joe Hershberger <joe.hershberger at ni.com>
Signed-off-by: Oleksandr Tymoshenko <gonzo at bluezbox.com>
---
 drivers/net/rtl8169.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/rtl8169.c b/drivers/net/rtl8169.c
index 843b083..1cc0b40 100644
--- a/drivers/net/rtl8169.c
+++ b/drivers/net/rtl8169.c
@@ -666,12 +666,12 @@ static int rtl_send_common(pci_dev_t dev, unsigned long dev_iobase,
 		puts("tx timeout/error\n");
 		printf("%s elapsed time : %lu\n", __func__, currticks()-stime);
 #endif
-		ret = 0;
+		ret = -ETIMEDOUT;
 	} else {
 #ifdef DEBUG_RTL8169_TX
 		puts("tx done\n");
 #endif
-		ret = length;
+		ret = 0;
 	}
 	/* Delay to make net console (nc) work properly */
 	udelay(20);
-- 
2.7.4