From 58d876fa7181f2f393190c1d32c056b5a9d34aa2 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 5 May 2017 08:34:58 +0300 Subject: [PATCH] cxl: Unlock on error in probe We should unlock if get_cxl_adapter() fails. Fixes: 594ff7d067ca ("cxl: Support to flash a new image on the adapter from a guest") Signed-off-by: Dan Carpenter Acked-by: Frederic Barrat Signed-off-by: Michael Ellerman --- drivers/misc/cxl/flash.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/misc/cxl/flash.c b/drivers/misc/cxl/flash.c index 7c61c70ba3f6..3aa216bf0939 100644 --- a/drivers/misc/cxl/flash.c +++ b/drivers/misc/cxl/flash.c @@ -401,8 +401,10 @@ static int device_open(struct inode *inode, struct file *file) if (down_interruptible(&sem) != 0) return -EPERM; - if (!(adapter = get_cxl_adapter(adapter_num))) - return -ENODEV; + if (!(adapter = get_cxl_adapter(adapter_num))) { + rc = -ENODEV; + goto err_unlock; + } file->private_data = adapter; continue_token = 0; @@ -446,6 +448,8 @@ static int device_open(struct inode *inode, struct file *file) free_page((unsigned long) le); err: put_device(&adapter->dev); +err_unlock: + up(&sem); return rc; } -- GitLab