diff mbox series

[v3,02/41] net: ieee802154: hwsim: Ensure proper channel selection at probe time

Message ID 20220117115440.60296-3-miquel.raynal@bootlin.com
State Superseded
Headers show
Series IEEE 802.15.4 scan support | expand

Commit Message

Miquel Raynal Jan. 17, 2022, 11:54 a.m. UTC
Drivers are expected to set the PHY current_channel and current_page
according to their default state. The hwsim driver is advertising being
configured on channel 13 by default but that is not reflected in its own
internal pib structure. In order to ensure that this driver consider the
current channel as being 13 internally, we can call hwsim_hw_channel()
instead of creating an empty pib structure.

We assume here that kvfree_rcu(NULL) is a valid call.

Fixes: f25da51fdc38 ("ieee802154: hwsim: add replacement for fakelb")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 drivers/net/ieee802154/mac802154_hwsim.c | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ieee802154/mac802154_hwsim.c b/drivers/net/ieee802154/mac802154_hwsim.c
index 8caa61ec718f..795f8eb5387b 100644
--- a/drivers/net/ieee802154/mac802154_hwsim.c
+++ b/drivers/net/ieee802154/mac802154_hwsim.c
@@ -732,7 +732,6 @@  static int hwsim_add_one(struct genl_info *info, struct device *dev,
 {
 	struct ieee802154_hw *hw;
 	struct hwsim_phy *phy;
-	struct hwsim_pib *pib;
 	int idx;
 	int err;
 
@@ -780,13 +779,8 @@  static int hwsim_add_one(struct genl_info *info, struct device *dev,
 
 	/* hwsim phy channel 13 as default */
 	hw->phy->current_channel = 13;
-	pib = kzalloc(sizeof(*pib), GFP_KERNEL);
-	if (!pib) {
-		err = -ENOMEM;
-		goto err_pib;
-	}
+	hwsim_hw_channel(hw, hw->phy->current_page, hw->phy->current_channel);
 
-	rcu_assign_pointer(phy->pib, pib);
 	phy->idx = idx;
 	INIT_LIST_HEAD(&phy->edges);
 
@@ -815,8 +809,6 @@  static int hwsim_add_one(struct genl_info *info, struct device *dev,
 err_subscribe:
 	ieee802154_unregister_hw(phy->hw);
 err_reg:
-	kfree(pib);
-err_pib:
 	ieee802154_free_hw(phy->hw);
 	return err;
 }