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r8152: check if the pointer of the function exists

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Return error code if autosuspend_en, eee_get, or eee_set don't exist.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Hayes Wang 2021-02-19 17:04:41 +08:00 committed by Jakub Kicinski
parent 7a0ae61acd
commit c79515e479
1 changed files with 13 additions and 0 deletions
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13
drivers/net/usb/r8152.c
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@ -5757,6 +5757,9 @@ static int rtl8152_runtime_suspend(struct r8152 *tp)
struct net_device *netdev = tp->netdev;
int ret = 0;
if (!tp->rtl_ops.autosuspend_en)
return -EBUSY;
set_bit(SELECTIVE_SUSPEND, &tp->flags);
smp_mb__after_atomic();
@ -6156,6 +6159,11 @@ rtl_ethtool_get_eee(struct net_device *net, struct ethtool_eee *edata)
struct r8152 *tp = netdev_priv(net);
int ret;
if (!tp->rtl_ops.eee_get) {
ret = -EOPNOTSUPP;
goto out;
}
ret = usb_autopm_get_interface(tp->intf);
if (ret < 0)
goto out;
@ -6178,6 +6186,11 @@ rtl_ethtool_set_eee(struct net_device *net, struct ethtool_eee *edata)
struct r8152 *tp = netdev_priv(net);
int ret;
if (!tp->rtl_ops.eee_set) {
ret = -EOPNOTSUPP;
goto out;
}
ret = usb_autopm_get_interface(tp->intf);
if (ret < 0)
goto out;