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| author | Pierre Gondois <pierre.gondois@arm.com> | 2022-10-26 20:59:54 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-11-10 18:33:28 +0100 |
| commit | 3da72e18371c41a6f6f96b594854b178168c7757 (patch) | |
| tree | 27263c5a93a9957ff225fae244c01e6d212d9527 /drivers/base | |
| parent | driver core: mark driver_allows_async_probing static (diff) | |
| download | linux-3da72e18371c41a6f6f96b594854b178168c7757.tar.xz linux-3da72e18371c41a6f6f96b594854b178168c7757.zip | |
cacheinfo: Decrement refcount in cache_setup_of_node()
Refcounts to DT nodes are only incremented in the function
and never decremented. Decrease the refcounts when necessary.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Link: https://lore.kernel.org/r/20221026185954.991547-1-pierre.gondois@arm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/cacheinfo.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/base/cacheinfo.c b/drivers/base/cacheinfo.c index 4b5cd08c5a65..04317cde800c 100644 --- a/drivers/base/cacheinfo.c +++ b/drivers/base/cacheinfo.c @@ -196,7 +196,7 @@ static void cache_of_set_props(struct cacheinfo *this_leaf, static int cache_setup_of_node(unsigned int cpu) { - struct device_node *np; + struct device_node *np, *prev; struct cacheinfo *this_leaf; unsigned int index = 0; @@ -206,19 +206,24 @@ static int cache_setup_of_node(unsigned int cpu) return -ENOENT; } + prev = np; + while (index < cache_leaves(cpu)) { this_leaf = per_cpu_cacheinfo_idx(cpu, index); - if (this_leaf->level != 1) + if (this_leaf->level != 1) { np = of_find_next_cache_node(np); - else - np = of_node_get(np);/* cpu node itself */ - if (!np) - break; + of_node_put(prev); + prev = np; + if (!np) + break; + } cache_of_set_props(this_leaf, np); this_leaf->fw_token = np; index++; } + of_node_put(np); + if (index != cache_leaves(cpu)) /* not all OF nodes populated */ return -ENOENT; |