linux-kernel - [PATCH net] devlink: Remove extra assertion from flash notification logic

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Message-Id: <1d750b6f4991c16995c4d0927b709eb23647ff85.1636999616.git.leonro@nvidia.com>
Date:   Mon, 15 Nov 2021 20:07:47 +0200
From:   Leon Romanovsky <leon@...nel.org>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Leon Romanovsky <leonro@...dia.com>,
        Amit Cohen <amcohen@...dia.com>, Jiri Pirko <jiri@...dia.com>,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH net] devlink: Remove extra assertion from flash notification logic

From: Leon Romanovsky <leonro@...dia.com>

The mlxsw driver calls to various devlink flash routines even before
users can get any access to the devlink instance itself. For example,
mlxsw_core_fw_rev_validate() one of such functions.

It causes to the WARN_ON to trigger warning about devlink not
registered, while the flow is valid.

Fixes: cf530217408e ("devlink: Notify users when objects are accessible")
Reported-by: Amit Cohen <amcohen@...dia.com>
Tested-by: Amit Cohen <amcohen@...dia.com>
Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
 net/core/devlink.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/net/core/devlink.c b/net/core/devlink.c
index 5ba4f9434acd..6face738b16a 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -4229,7 +4229,6 @@ static void __devlink_flash_update_notify(struct devlink *devlink,
 	WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE &&
 		cmd != DEVLINK_CMD_FLASH_UPDATE_END &&
 		cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS);
-	WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
 
 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 	if (!msg)
-- 
2.33.1