Messages in this thread Patch in this message | | | From | Andy Shevchenko <> | Subject | [PATCH v1 3/5] nvmem: core: Check input parameter for NULL in nvmem_unregister() | Date | Tue, 4 Jan 2022 15:38:41 +0200 |
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nvmem_unregister() frees resources and standard pattern is to allow caller to not care if it's NULL or not. This will reduce burden on the callers to perform this check.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> --- drivers/nvmem/core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c index 6946d14876dc..3ca6615d9430 100644 --- a/drivers/nvmem/core.c +++ b/drivers/nvmem/core.c @@ -903,7 +903,8 @@ static void nvmem_device_release(struct kref *kref) */ void nvmem_unregister(struct nvmem_device *nvmem) { - kref_put(&nvmem->refcnt, nvmem_device_release); + if (nvmem) + kref_put(&nvmem->refcnt, nvmem_device_release); } EXPORT_SYMBOL_GPL(nvmem_unregister); -- 2.34.1
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