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From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Alexander Aring <alex.aring@gmail.com>,
	Stefan Schmidt <stefan@datenfreihafen.org>,
	linux-wpan@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	Eric Dumazet <edumazet@google.com>,
	netdev@vger.kernel.org, David Girault <david.girault@qorvo.com>,
	Romuald Despres <romuald.despres@qorvo.com>,
	Frederic Blain <frederic.blain@qorvo.com>,
	Nicolas Schodet <nico@ni.fr.eu.org>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	Miquel Raynal <miquel.raynal@bootlin.com>
Subject: [PATCH wpan-next 19/20] ieee802154: hwsim: Do not check the rtnl
Date: Fri,  1 Jul 2022 16:30:51 +0200	[thread overview]
Message-ID: <20220701143052.1267509-20-miquel.raynal@bootlin.com> (raw)
In-Reply-To: <20220701143052.1267509-1-miquel.raynal@bootlin.com>

There is no need to ensure the rtnl is locked when changing a driver's
channel. This cause issues when scanning and this is the only driver
relying on it. Just drop this dependency because it does not seem
legitimate.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 drivers/net/ieee802154/mac802154_hwsim.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ieee802154/mac802154_hwsim.c b/drivers/net/ieee802154/mac802154_hwsim.c
index 38c217bd7c82..a5b9fc2fb64c 100644
--- a/drivers/net/ieee802154/mac802154_hwsim.c
+++ b/drivers/net/ieee802154/mac802154_hwsim.c
@@ -100,7 +100,7 @@ static int hwsim_hw_channel(struct ieee802154_hw *hw, u8 page, u8 channel)
 	pib->page = page;
 	pib->channel = channel;
 
-	pib_old = rtnl_dereference(phy->pib);
+	rcu_assign_pointer(pib_old, phy->pib);
 	rcu_assign_pointer(phy->pib, pib);
 	kfree_rcu(pib_old, rcu);
 	return 0;
-- 
2.34.1


  parent reply	other threads:[~2022-07-01 14:37 UTC|newest]

Thread overview: 84+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-01 14:30 [PATCH wpan-next 00/20] net: ieee802154: Support scanning/beaconing Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 01/20] net: mac802154: Allow the creation of coordinator interfaces Miquel Raynal
2022-07-06  1:51   ` Alexander Aring
2022-08-19 17:11     ` Miquel Raynal
2022-08-23 12:33       ` Alexander Aring
2022-08-23 16:29         ` Miquel Raynal
2022-08-23 21:44           ` Alexander Aring
2022-08-24  7:35             ` Miquel Raynal
2022-08-24 21:43               ` Alexander Aring
2022-08-25  8:40                 ` Miquel Raynal
2022-08-26  0:51                   ` Alexander Aring
2022-08-26  1:35                     ` Alexander Aring
2022-08-26  8:08                       ` Miquel Raynal
2022-08-29  2:31                         ` Alexander Aring
2022-08-29  8:05                           ` Miquel Raynal
2022-08-26  7:30                     ` Miquel Raynal
2022-08-24 10:20             ` Miquel Raynal
2022-08-24 12:43               ` Alexander Aring
2022-08-24 13:26                 ` Miquel Raynal
2022-08-24 21:53                   ` Alexander Aring
2022-08-25  1:02                     ` Alexander Aring
2022-08-25  8:46                       ` Miquel Raynal
2022-08-25 12:58                     ` Miquel Raynal
2022-08-26  1:05                       ` Alexander Aring
2022-08-26  7:54                         ` Miquel Raynal
2022-08-29  2:52                           ` Alexander Aring
2022-08-29  8:02                             ` Miquel Raynal
2022-08-30  2:23                               ` Alexander Aring
2022-08-31 15:39                                 ` Miquel Raynal
2022-09-01  0:09                                   ` Miquel Raynal
2022-09-01 13:09                                     ` Miquel Raynal
2022-09-02  2:38                                       ` Alexander Aring
2022-09-03  0:08                                         ` Miquel Raynal
2022-09-03 14:20                                           ` Alexander Aring
2022-09-03 14:31                                             ` Alexander Aring
2022-09-03 16:05                                             ` Miquel Raynal
2022-09-03 18:21                                               ` Alexander Aring
2022-09-03 18:29                                                 ` Alexander Aring
2022-09-03 19:07                                               ` Alexander Aring
2022-09-03 19:10                                                 ` Alexander Aring
2022-09-03 19:40                                                   ` Alexander Aring
2022-09-05  3:16                                                     ` Miquel Raynal
2022-09-05 22:35                                                       ` Alexander Aring
2022-09-02  2:23                                     ` Alexander Aring
2022-09-02  2:39                                       ` Alexander Aring
2022-09-02  2:09                                   ` Alexander Aring
2022-07-01 14:30 ` [PATCH wpan-next 02/20] net: ieee802154: Advertize coordinators discovery Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 03/20] net: ieee802154: Handle " Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 04/20] net: ieee802154: Trace the registration of new PANs Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 05/20] net: ieee802154: Define frame types Miquel Raynal
2022-07-11  2:06   ` Alexander Aring
2022-08-19 17:13     ` Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 06/20] net: ieee802154: Add support for user scanning requests Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 07/20] net: ieee802154: Define a beacon frame header Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 08/20] net: mac802154: Prepare forcing specific symbol duration Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 09/20] net: mac802154: Introduce a global device lock Miquel Raynal
2022-07-04  1:12   ` Alexander Aring
2022-08-19 17:06     ` Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 10/20] net: mac802154: Handle passive scanning Miquel Raynal
2022-07-15  3:33   ` Alexander Aring
2022-07-15  3:42     ` Alexander Aring
2022-08-19 17:22       ` Miquel Raynal
2022-08-01 23:42     ` Alexander Aring
2022-08-01 23:54       ` Alexander Aring
2022-07-01 14:30 ` [PATCH wpan-next 11/20] net: ieee802154: Add support for user beaconing requests Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 12/20] net: mac802154: Handle basic beaconing Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 13/20] net: ieee802154: Add support for user active scan requests Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 14/20] net: mac802154: Handle active scanning Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 15/20] net: ieee802154: Add support for allowing to answer BEACON_REQ Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 16/20] net: mac802154: Handle received BEACON_REQ Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 17/20] net: ieee802154: Handle limited devices with only datagram support Miquel Raynal
2022-07-15  3:16   ` Alexander Aring
2022-08-19 17:13     ` Miquel Raynal
2022-08-23 12:43       ` Alexander Aring
2022-07-01 14:30 ` [PATCH wpan-next 18/20] ieee802154: ca8210: Flag the driver as being limited Miquel Raynal
2022-07-01 14:30 ` Miquel Raynal [this message]
2022-07-06  1:23   ` [PATCH wpan-next 19/20] ieee802154: hwsim: Do not check the rtnl Alexander Aring
2022-08-01 23:58     ` Alexander Aring
2022-08-19 17:09     ` Miquel Raynal
2022-08-25 22:41       ` Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 20/20] ieee802154: hwsim: Allow devices to be coordinators Miquel Raynal
2022-07-11  2:01   ` Alexander Aring
2022-08-19 17:12     ` Miquel Raynal
2022-07-04  1:17 ` [PATCH wpan-next 00/20] net: ieee802154: Support scanning/beaconing Alexander Aring

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