[PATCH 05/15] lirc_dev: simplify goto paths

From: Andi Shyti
Date: Wed Jun 29 2016 - 09:23:59 EST


The code can be rearranged so that some goto paths can be removed

Signed-off-by: Andi Shyti <andi.shyti@xxxxxxxxxxx>
---
drivers/media/rc/lirc_dev.c | 34 ++++++++++++----------------------
1 file changed, 12 insertions(+), 22 deletions(-)

diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
index b11ab5c..400ab80 100644
--- a/drivers/media/rc/lirc_dev.c
+++ b/drivers/media/rc/lirc_dev.c
@@ -241,52 +241,44 @@ static int lirc_allocate_driver(struct lirc_driver *d)

if (!d) {
pr_err("lirc_dev: driver pointer must be not NULL!\n");
- err = -EBADRQC;
- goto out;
+ return -EBADRQC;
}

if (!d->dev) {
pr_err("%s: dev pointer not filled in!\n", __func__);
- err = -EINVAL;
- goto out;
+ return -EINVAL;
}

if (MAX_IRCTL_DEVICES <= d->minor) {
dev_err(d->dev, "minor must be between 0 and %d!\n",
MAX_IRCTL_DEVICES - 1);
- err = -EBADRQC;
- goto out;
+ return -EBADRQC;
}

if (1 > d->code_length || (BUFLEN * 8) < d->code_length) {
dev_err(d->dev, "code length must be less than %d bits\n",
BUFLEN * 8);
- err = -EBADRQC;
- goto out;
+ return -EBADRQC;
}

if (d->sample_rate) {
if (2 > d->sample_rate || HZ < d->sample_rate) {
dev_err(d->dev, "invalid %d sample rate\n",
d->sample_rate);
- err = -EBADRQC;
- goto out;
+ return -EBADRQC;
}
if (!d->add_to_buf) {
dev_err(d->dev, "add_to_buf not set\n");
- err = -EBADRQC;
- goto out;
+ return -EBADRQC;
}
} else if (!(d->fops && d->fops->read) && !d->rbuf) {
dev_err(d->dev, "fops->read and rbuf are NULL!\n");
- err = -EBADRQC;
- goto out;
+ return -EBADRQC;
} else if (!d->rbuf) {
if (!(d->fops && d->fops->read && d->fops->poll &&
d->fops->unlocked_ioctl)) {
dev_err(d->dev, "undefined read, poll, ioctl\n");
- err = -EBADRQC;
- goto out;
+ return -EBADRQC;
}
}

@@ -364,7 +356,7 @@ out_sysfs:
device_destroy(lirc_class, MKDEV(MAJOR(lirc_base_dev), ir->d.minor));
out_lock:
mutex_unlock(&lirc_dev_lock);
-out:
+
return err;
}

@@ -793,9 +785,8 @@ static int __init lirc_dev_init(void)

lirc_class = class_create(THIS_MODULE, "lirc");
if (IS_ERR(lirc_class)) {
- retval = PTR_ERR(lirc_class);
pr_err("lirc_dev: class_create failed\n");
- goto error;
+ return PTR_ERR(lirc_class);
}

retval = alloc_chrdev_region(&lirc_base_dev, 0, MAX_IRCTL_DEVICES,
@@ -803,15 +794,14 @@ static int __init lirc_dev_init(void)
if (retval) {
class_destroy(lirc_class);
pr_err("lirc_dev: alloc_chrdev_region failed\n");
- goto error;
+ return retval;
}


pr_info("lirc_dev: IR Remote Control driver registered, major %d\n",
MAJOR(lirc_base_dev));

-error:
- return retval;
+ return 0;
}


--
2.8.1