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authorBen Hutchings <bhutchings@solarflare.com>2013-11-14 00:42:50 +0000
committerDavid S. Miller <davem@davemloft.net>2013-11-14 16:22:10 -0500
commit810abe9bb3619c717115ae88a09a92cb35a83171 (patch)
tree85178bf18375bd5bfe6bdc330831e397b2493f78 /drivers/net/ethernet/oki-semi
parent62d7e3a2d00675970bc7afccc2e407e1df8f1d0f (diff)
downloadlinux-810abe9bb3619c717115ae88a09a92cb35a83171.tar.bz2
pch_gbe: 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. Compile-tested only. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/oki-semi')
-rw-r--r--drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c12
1 files changed, 3 insertions, 9 deletions
diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
index 5a0f04c2c813..27ffe0ebf0a6 100644
--- a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
+++ b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
@@ -245,16 +245,8 @@ static int hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
/* Get ieee1588's dev information */
pdev = adapter->ptp_pdev;
- switch (cfg.tx_type) {
- case HWTSTAMP_TX_OFF:
- adapter->hwts_tx_en = 0;
- break;
- case HWTSTAMP_TX_ON:
- adapter->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:
@@ -284,6 +276,8 @@ static int hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
return -ERANGE;
}
+ adapter->hwts_tx_en = cfg.tx_type == HWTSTAMP_TX_ON;
+
/* Clear out any old time stamps. */
pch_ch_event_write(pdev, TX_SNAPSHOT_LOCKED | RX_SNAPSHOT_LOCKED);