diff options
Diffstat (limited to 'drivers/staging/pi433/pi433_if.c')
| -rw-r--r-- | drivers/staging/pi433/pi433_if.c | 18 |
1 files changed, 7 insertions, 11 deletions
diff --git a/drivers/staging/pi433/pi433_if.c b/drivers/staging/pi433/pi433_if.c index c85a805a1243..b2314636dc89 100644 --- a/drivers/staging/pi433/pi433_if.c +++ b/drivers/staging/pi433/pi433_if.c @@ -14,16 +14,6 @@ * * Copyright (C) 2016 Wolf-Entwicklungen * Marcus Wolf <linux@wolf-entwicklungen.de> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #undef DEBUG @@ -1255,12 +1245,16 @@ static int pi433_probe(struct spi_device *spi) /* create cdev */ device->cdev = cdev_alloc(); + if (!device->cdev) { + dev_dbg(device->dev, "allocation of cdev failed"); + goto cdev_failed; + } device->cdev->owner = THIS_MODULE; cdev_init(device->cdev, &pi433_fops); retval = cdev_add(device->cdev, device->devt, 1); if (retval) { dev_dbg(device->dev, "register of cdev failed"); - goto cdev_failed; + goto del_cdev; } /* spi setup */ @@ -1268,6 +1262,8 @@ static int pi433_probe(struct spi_device *spi) return 0; +del_cdev: + cdev_del(device->cdev); cdev_failed: kthread_stop(device->tx_task_struct); send_thread_failed: |