From 08f87f769b595151be1afeff53e144f543faa614 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 06 Dec 2023 09:51:13 +0000
Subject: [PATCH] add dts config
---
kernel/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c | 18 +++++++++++++++---
1 files changed, 15 insertions(+), 3 deletions(-)
diff --git a/kernel/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c b/kernel/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c
index 1e4cdee..20d72f1 100644
--- a/kernel/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c
+++ b/kernel/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c
@@ -2,13 +2,15 @@
/* Copyright (c) 2016-2018 Mellanox Technologies. All rights reserved */
#include <linux/kernel.h>
+#include <linux/mutex.h>
#include <linux/slab.h>
#include "spectrum.h"
struct mlxsw_sp_kvdl {
const struct mlxsw_sp_kvdl_ops *kvdl_ops;
- unsigned long priv[0];
+ struct mutex kvdl_lock; /* Protects kvdl allocations */
+ unsigned long priv[];
/* priv has to be always the last item */
};
@@ -22,6 +24,7 @@
GFP_KERNEL);
if (!kvdl)
return -ENOMEM;
+ mutex_init(&kvdl->kvdl_lock);
kvdl->kvdl_ops = kvdl_ops;
mlxsw_sp->kvdl = kvdl;
@@ -31,6 +34,7 @@
return 0;
err_init:
+ mutex_destroy(&kvdl->kvdl_lock);
kfree(kvdl);
return err;
}
@@ -40,6 +44,7 @@
struct mlxsw_sp_kvdl *kvdl = mlxsw_sp->kvdl;
kvdl->kvdl_ops->fini(mlxsw_sp, kvdl->priv);
+ mutex_destroy(&kvdl->kvdl_lock);
kfree(kvdl);
}
@@ -48,9 +53,14 @@
unsigned int entry_count, u32 *p_entry_index)
{
struct mlxsw_sp_kvdl *kvdl = mlxsw_sp->kvdl;
+ int err;
- return kvdl->kvdl_ops->alloc(mlxsw_sp, kvdl->priv, type,
- entry_count, p_entry_index);
+ mutex_lock(&kvdl->kvdl_lock);
+ err = kvdl->kvdl_ops->alloc(mlxsw_sp, kvdl->priv, type,
+ entry_count, p_entry_index);
+ mutex_unlock(&kvdl->kvdl_lock);
+
+ return err;
}
void mlxsw_sp_kvdl_free(struct mlxsw_sp *mlxsw_sp,
@@ -59,8 +69,10 @@
{
struct mlxsw_sp_kvdl *kvdl = mlxsw_sp->kvdl;
+ mutex_lock(&kvdl->kvdl_lock);
kvdl->kvdl_ops->free(mlxsw_sp, kvdl->priv, type,
entry_count, entry_index);
+ mutex_unlock(&kvdl->kvdl_lock);
}
int mlxsw_sp_kvdl_alloc_count_query(struct mlxsw_sp *mlxsw_sp,
--
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