diff options
| author | Li Ming <ming.li@zohomail.com> | 2025-02-21 09:24:49 +0800 |
|---|---|---|
| committer | Dave Jiang <dave.jiang@intel.com> | 2025-03-14 14:37:47 -0700 |
| commit | a58afda8bfd4a113295f0e12c0697c35a69614b2 (patch) | |
| tree | c45fb5f2702bd8ebac5b4e9427bbdfce4ca3fd60 | |
| parent | 3ad4f59f38965071e429ace93c75a94a2ede5456 (diff) | |
cxl/memdev: cxl_memdev_ioctl() cleanup
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.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Alison Schofield <alison.schofield@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Acked-by: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Li Ming <ming.li@zohomail.com>
Link: https://patch.msgid.link/20250221012453.126366-4-ming.li@zohomail.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
| -rw-r--r-- | drivers/cxl/core/memdev.c | 8 |
1 files 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) |