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>

diff --git a/drivers/char/bsr.c b/drivers/char/bsr.c
index 0c68823..9746705 100644 (file)
--- a/drivers/char/bsr.c
+++ b/drivers/char/bsr.c
@@ -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;
        }