lkml.org 
[lkml]   [2022]   [Jan]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 3/5] nvmem: core: Check input parameter for NULL in nvmem_unregister()
Date
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>
---
v2: no changes
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 68db7d3303ac..53a43d843743 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
\
 
 \ /
  Last update: 2022-01-24 19:02    [W:0.075 / U:1.156 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site