From: Petr Machata <petrm@nvidia.com>
To: "David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
<netdev@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>, Petr Machata <petrm@nvidia.com>,
"Vadim Pasternak" <vadimp@nvidia.com>,
Ido Schimmel <idosch@nvidia.com>
Subject: [PATCH net] mlxsw: minimal: Fix deadlock in ports creation
Date: Thu, 11 Aug 2022 11:57:36 +0200 [thread overview]
Message-ID: <f4afce5ab0318617f3866b85274be52542d59b32.1660211614.git.petrm@nvidia.com> (raw)
From: Vadim Pasternak <vadimp@nvidia.com>
Drop devl_lock() / devl_unlock() from ports creation and removal flows
since the devlink instance lock is now taken by mlxsw_core.
Fixes: 72a4c8c94efa ("mlxsw: convert driver to use unlocked devlink API during init/fini")
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
---
drivers/net/ethernet/mellanox/mlxsw/minimal.c | 7 -------
1 file changed, 7 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/minimal.c b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
index d9bf584234a6..bb1cd4bae82e 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/minimal.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
@@ -328,7 +328,6 @@ static void mlxsw_m_port_module_unmap(struct mlxsw_m *mlxsw_m, u8 module)
static int mlxsw_m_ports_create(struct mlxsw_m *mlxsw_m)
{
unsigned int max_ports = mlxsw_core_max_ports(mlxsw_m->core);
- struct devlink *devlink = priv_to_devlink(mlxsw_m->core);
u8 last_module = max_ports;
int i;
int err;
@@ -357,7 +356,6 @@ static int mlxsw_m_ports_create(struct mlxsw_m *mlxsw_m)
}
/* Create port objects for each valid entry */
- devl_lock(devlink);
for (i = 0; i < mlxsw_m->max_ports; i++) {
if (mlxsw_m->module_to_port[i] > 0) {
err = mlxsw_m_port_create(mlxsw_m,
@@ -367,7 +365,6 @@ static int mlxsw_m_ports_create(struct mlxsw_m *mlxsw_m)
goto err_module_to_port_create;
}
}
- devl_unlock(devlink);
return 0;
@@ -377,7 +374,6 @@ static int mlxsw_m_ports_create(struct mlxsw_m *mlxsw_m)
mlxsw_m_port_remove(mlxsw_m,
mlxsw_m->module_to_port[i]);
}
- devl_unlock(devlink);
i = max_ports;
err_module_to_port_map:
for (i--; i > 0; i--)
@@ -390,10 +386,8 @@ static int mlxsw_m_ports_create(struct mlxsw_m *mlxsw_m)
static void mlxsw_m_ports_remove(struct mlxsw_m *mlxsw_m)
{
- struct devlink *devlink = priv_to_devlink(mlxsw_m->core);
int i;
- devl_lock(devlink);
for (i = 0; i < mlxsw_m->max_ports; i++) {
if (mlxsw_m->module_to_port[i] > 0) {
mlxsw_m_port_remove(mlxsw_m,
@@ -401,7 +395,6 @@ static void mlxsw_m_ports_remove(struct mlxsw_m *mlxsw_m)
mlxsw_m_port_module_unmap(mlxsw_m, i);
}
}
- devl_unlock(devlink);
kfree(mlxsw_m->module_to_port);
kfree(mlxsw_m->ports);
--
2.35.3
next reply other threads:[~2022-08-11 11:24 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-11 9:57 Petr Machata [this message]
2022-08-11 11:44 ` Petr Machata
2022-08-11 11:59 ` Jiri Pirko
2022-08-11 16:10 ` patchwork-bot+netdevbpf
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=f4afce5ab0318617f3866b85274be52542d59b32.1660211614.git.petrm@nvidia.com \
--to=petrm@nvidia.com \
--cc=davem@davemloft.net \
--cc=edumazet@google.com \
--cc=idosch@nvidia.com \
--cc=kuba@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=vadimp@nvidia.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®