net: rtl8169: Fix return value for rtl_send_common

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@nvidia.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Oleksandr Tymoshenko <gonzo@bluezbox.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Oleksandr Tymoshenko 2016-07-01 13:22:00 -07:00 committed by Joe Hershberger
parent e4ead4a21d
commit 4c64c4db3b

View file

@ -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);