In cxl_memdev_ioctl(), the down_read(&cxl_memdev_rwsem) and
up_read(&cxl_memdev_rwsem) can be replaced by a
guard(rwsem_read)(&cxl_memdev_rwsem), it helps to remove the open-coded
up_read(&cxl_memdev_rwsem). Besides, the local var 'rc' can be also
removed to make the code more cleaner.
Signed-off-by: Li Ming <ming.li@zohomail.com>
---
drivers/cxl/core/memdev.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/cxl/core/memdev.c b/drivers/cxl/core/memdev.c
index 98c05426aa4a..6f90dcd626f9 100644
--- a/drivers/cxl/core/memdev.c
+++ b/drivers/cxl/core/memdev.c
@@ -668,15 +668,13 @@ static long cxl_memdev_ioctl(struct file *file, unsigned int cmd,
{
struct cxl_memdev *cxlmd = file->private_data;
struct cxl_dev_state *cxlds;
- int rc = -ENXIO;
- down_read(&cxl_memdev_rwsem);
+ guard(rwsem_read)(&cxl_memdev_rwsem);
cxlds = cxlmd->cxlds;
if (cxlds && cxlds->type == CXL_DEVTYPE_CLASSMEM)
- rc = __cxl_memdev_ioctl(cxlmd, cmd, arg);
- up_read(&cxl_memdev_rwsem);
+ return __cxl_memdev_ioctl(cxlmd, cmd, arg);
- return rc;
+ return -ENXIO;
}
static int cxl_memdev_open(struct inode *inode, struct file *file)
--
2.34.1