diff options
| author | Ben Hutchings <bhutchings@solarflare.com> | 2013-11-14 00:48:56 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-11-14 16:22:10 -0500 |
| commit | a5be8cd3875ca051db857c9d76b253a7e7ea3f22 (patch) | |
| tree | a9d5b9f6d2597b1fabf95853e70de55e568b435f /drivers/net/ethernet/xscale | |
| parent | 2ee91e54bd5367bf4123719a4f7203857b28e046 (diff) | |
| download | lwn-a5be8cd3875ca051db857c9d76b253a7e7ea3f22.tar.gz lwn-a5be8cd3875ca051db857c9d76b253a7e7ea3f22.zip | |
ixp4xx_eth: Validate hwtstamp_config completely before applying it
hwtstamp_ioctl() should validate all fields of hwtstamp_config
before making any changes. Currently it sets the TX configuration
before validating the rx_filter field.
Untested as I don't have a cross-compiler to hand.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/xscale')
| -rw-r--r-- | drivers/net/ethernet/xscale/ixp4xx_eth.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/drivers/net/ethernet/xscale/ixp4xx_eth.c b/drivers/net/ethernet/xscale/ixp4xx_eth.c index e78802e75ea6..bcc224a83734 100644 --- a/drivers/net/ethernet/xscale/ixp4xx_eth.c +++ b/drivers/net/ethernet/xscale/ixp4xx_eth.c @@ -389,16 +389,8 @@ static int hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) ch = PORT2CHANNEL(port); regs = (struct ixp46x_ts_regs __iomem *) IXP4XX_TIMESYNC_BASE_VIRT; - switch (cfg.tx_type) { - case HWTSTAMP_TX_OFF: - port->hwts_tx_en = 0; - break; - case HWTSTAMP_TX_ON: - port->hwts_tx_en = 1; - break; - default: + if (cfg.tx_type != HWTSTAMP_TX_OFF && cfg.tx_type != HWTSTAMP_TX_ON) return -ERANGE; - } switch (cfg.rx_filter) { case HWTSTAMP_FILTER_NONE: @@ -416,6 +408,8 @@ static int hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) return -ERANGE; } + port->hwts_tx_en = cfg.tx_type == HWTSTAMP_TX_ON; + /* Clear out any old time stamps. */ __raw_writel(TX_SNAPSHOT_LOCKED | RX_SNAPSHOT_LOCKED, ®s->channel[ch].ch_event); |