at86rf230: fix page parameter constraints

Since commit e37d2ec82a222f1819e7793a27bc052999a379fb ("mac802154: ops:
declare channel and page as u8") the page parameter can't be below zero.
This patch fix a kbuild test robot warning. Furthermore this check
should be removed and handled by netlink 802.15.4 interface.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c
index 9ad2d432ef4301e170104f0cefabd8e97781e637..624080d97209baa85f95ee3f5ff7bbf740498de7 100644 (file)
--- a/drivers/net/ieee802154/at86rf230.c
+++ b/drivers/net/ieee802154/at86rf230.c
@@ -1047,7 +1047,7 @@ at86rf230_channel(struct ieee802154_hw *hw, u8 page, u8 channel)
        struct at86rf230_local *lp = hw->priv;
        int rc;
 
-       if (page < 0 || page > 31 ||
+       if (page > 31 ||
            !(lp->hw->phy->channels_supported[page] & BIT(channel))) {
                WARN_ON(1);
                return -EINVAL;