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| author | Su Hui <suhui@nfschina.com> | 2023-10-20 12:00:04 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-10-21 13:50:45 +0300 |
| commit | a792197f50705a5855b592fde3312e1e373862e5 (patch) | |
| tree | 6f0ca22d1ec56bc2ca0f48e5931af42dacd4a343 /drivers | |
| parent | ee3d12285471f17239af467eab11f9cb08c18dc4 (diff) | |
| download | linux-a792197f50705a5855b592fde3312e1e373862e5.tar.xz | |
net: dsa: mv88e6xxx: add an error code check in mv88e6352_tai_event_work
mv88e6xxx_tai_write() can return error code (-EOPNOTSUPP ...) if failed.
So check the value of 'ret' after calling mv88e6xxx_tai_write().
Signed-off-by: Su Hui <suhui@nfschina.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/dsa/mv88e6xxx/ptp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/dsa/mv88e6xxx/ptp.c b/drivers/net/dsa/mv88e6xxx/ptp.c index ea17231dc34e..56391e09b325 100644 --- a/drivers/net/dsa/mv88e6xxx/ptp.c +++ b/drivers/net/dsa/mv88e6xxx/ptp.c @@ -182,6 +182,10 @@ static void mv88e6352_tai_event_work(struct work_struct *ugly) mv88e6xxx_reg_lock(chip); err = mv88e6xxx_tai_write(chip, MV88E6XXX_TAI_EVENT_STATUS, status[0]); mv88e6xxx_reg_unlock(chip); + if (err) { + dev_err(chip->dev, "failed to write TAI status register\n"); + return; + } /* This is an external timestamp */ ev.type = PTP_CLOCK_EXTTS; |