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ionic: return -EFAULT if copy_to_user() fails

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The copy_to_user() function returns the number of bytes that it wasn't
able to copy.  We want to return -EFAULT to the user.

Fixes: fee6efce56 ("ionic: add hw timestamp support files")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dan Carpenter 2021-04-13 13:47:59 +03:00 committed by David S. Miller
parent 23ba511722
commit 5871d0c6b8
1 changed files with 3 additions and 1 deletions
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4
drivers/net/ethernet/pensando/ionic/ionic_phc.c
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@ -225,7 +225,9 @@ int ionic_lif_hwstamp_get(struct ionic_lif *lif, struct ifreq *ifr)
memcpy(&config, &lif->phc->ts_config, sizeof(config));
mutex_unlock(&lif->phc->config_lock);
return copy_to_user(ifr->ifr_data, &config, sizeof(config));
if (copy_to_user(ifr->ifr_data, &config, sizeof(config)))
return -EFAULT;
return 0;
}
static u64 ionic_hwstamp_read(struct ionic *ionic,