Messages in this thread Patch in this message | | | From | Devendra Naga <> | Subject | [PATCH] powerpc/BSR: cleanup the error path of bsr_init | Date | Sun, 15 Jul 2012 18:52:02 +0530 |
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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> --- This patch is not compile tested because i dont have the powerpc toolchain, i am trying hard to setit up one,
drivers/char/bsr.c | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/char/bsr.c b/drivers/char/bsr.c index 0c68823..9746705 100644 --- 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; } -- 1.7.0.4
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