Make sure to drop the reference taken by class_find_device() also on
allocation errors in open().
Signed-off-by: Johan Hovold <johan@kernel.org>
Fixes: 7bd1d4093c2f ("stm class: Introduce an abstraction for...")
Cc: stable@vger.kernel.org # v4.6+
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
struct stm_file *stmf;
struct device *dev;
unsigned int major = imajor(inode);
- int err = -ENODEV;
+ int err = -ENOMEM;
dev = class_find_device(&stm_class, NULL, &major, major_match);
if (!dev)
stmf = kzalloc(sizeof(*stmf), GFP_KERNEL);
if (!stmf)
- return -ENOMEM;
+ goto err_put_device;
+ err = -ENODEV;
stm_output_init(&stmf->output);
stmf->stm = to_stm_device(dev);
return nonseekable_open(inode, file);
err_free:
+ kfree(stmf);
+err_put_device:
/* matches class_find_device() above */
put_device(dev);
- kfree(stmf);
return err;
}