diff mbox series

[wpan-next,1/9] net: ieee802154: hwsim: Ensure proper channel selection at probe time

Message ID 20220120003645.308498-2-miquel.raynal@bootlin.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series ieee802154: A bunch of fixes | expand

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netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 6 of 6 maintainers
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success Fixes tag looks correct
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 29 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/tree_selection success Guessing tree name failed - patch did not apply

Commit Message

Miquel Raynal Jan. 20, 2022, 12:36 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;
 }