From 8637980bab3f09157eef20cc65d2eb7393c770fd Mon Sep 17 00:00:00 2001
From: Andrew Morton <akpm@osdl.org>
Date: Tue, 28 Mar 2006 01:56:18 -0800
Subject: [PATCH] [PATCH] paride: register_chrdev fix
If the user specified `major=0' (odd thing to do), pg.c will use dynamic
allocation. We need to pick up that major for subsequent unregister_chrdev().
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
drivers/block/paride/pg.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/block/paride/pg.c b/drivers/block/paride/pg.c
index 6f5df0fad703..79b868254032 100644
--- a/drivers/block/paride/pg.c
+++ b/drivers/block/paride/pg.c
@@ -643,7 +643,8 @@ static ssize_t pg_read(struct file *filp, char __user *buf, size_t count, loff_t
static int __init pg_init(void)
{
- int unit, err = 0;
+ int unit;
+ int err;
if (disable){
err = -1;
@@ -657,16 +658,17 @@ static int __init pg_init(void)
goto out;
}
- if (register_chrdev(major, name, &pg_fops)) {
+ err = register_chrdev(major, name, &pg_fops);
+ if (err < 0) {
printk("pg_init: unable to get major number %d\n", major);
for (unit = 0; unit < PG_UNITS; unit++) {
struct pg *dev = &devices[unit];
if (dev->present)
pi_release(dev->pi);
}
- err = -1;
goto out;
}
+ major = err; /* In case the user specified `major=0' (dynamic) */
pg_class = class_create(THIS_MODULE, "pg");
if (IS_ERR(pg_class)) {
err = PTR_ERR(pg_class);
--
2.20.1