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powerpc/BSR: cleanup the error path of bsr_init 

class_create if succeeded returns a pointer to the struct class,
and if it fails, it returns a value enclosed by the pointer, which
can be read by using PTR_ERR.

Handle the error and return it.

result is for error checking of the alloc_chrdev_region, instead
ret can be used, and also if the alloc_chrdev_region fail,
we are still returning -ENODEV, use ret and the error path will
take care of returning of the ret.

Signed-off-by: Devendra Naga <develkernel412222@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Devendra Naga 2012-07-15 18:52:02 +05:30 committed by Greg Kroah-Hartman
parent 483136ea0e
commit 8397c76a2c
1 changed files with 3 additions and 3 deletions
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6
drivers/char/bsr.c
View File

@ -297,7 +297,6 @@ static int __init bsr_init(void)
struct device_node *np;
dev_t bsr_dev;
int ret = -ENODEV;
int result;
np = of_find_compatible_node(NULL, NULL, "ibm,bsr");
if (!np)
@ -306,13 +305,14 @@ static int __init bsr_init(void)
bsr_class = class_create(THIS_MODULE, "bsr");
if (IS_ERR(bsr_class)) {
printk(KERN_ERR "class_create() failed for bsr_class\n");
ret = PTR_ERR(bsr_class);
goto out_err_1;
}
bsr_class->dev_attrs = bsr_dev_attrs;
result = alloc_chrdev_region(&bsr_dev, 0, BSR_MAX_DEVS, "bsr");
ret = alloc_chrdev_region(&bsr_dev, 0, BSR_MAX_DEVS, "bsr");
bsr_major = MAJOR(bsr_dev);
if (result < 0) {
if (ret < 0) {
printk(KERN_ERR "alloc_chrdev_region() failed for bsr\n");
goto out_err_2;
}