question about drivers/net/ethernet/renesas/ravb_main.c

From: Julia Lawall
Date: Fri Apr 03 2020 - 10:04:51 EST


Hello,

In the function ravb_hwtstamp_get in ravb_main.c, the following code looks
suspicious:

if (priv->tstamp_rx_ctrl & RAVB_RXTSTAMP_TYPE_V2_L2_EVENT)
config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L2_EVENT;
else if (priv->tstamp_rx_ctrl & RAVB_RXTSTAMP_TYPE_ALL)
config.rx_filter = HWTSTAMP_FILTER_ALL;
else
config.rx_filter = HWTSTAMP_FILTER_NONE;

According to drivers/net/ethernet/renesas/ravb.h,
RAVB_RXTSTAMP_TYPE_V2_L2_EVENT is 0x00000002 and RAVB_RXTSTAMP_TYPE_ALL is
0x00000006. Therefore, if the test on RAVB_RXTSTAMP_TYPE_ALL should be
true, it will never be reached. How should the code be changed?

thanks,
julia