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axonram: Return directly after a failed kzalloc() in axon_ram_probe()

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* Return directly after a call of the function "kzalloc" failed
  at the beginning.

* Delete a repeated check for the local variable "bank"
  which became unnecessary with this refactoring.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Markus Elfring 2017-08-03 20:23:57 +02:00 committed by Michael Ellerman
parent a1bddf3991
commit fdbb9457b4
1 changed files with 17 additions and 22 deletions
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39
arch/powerpc/sysdev/axonram.c
View file

@ -192,10 +192,8 @@ static int axon_ram_probe(struct platform_device *device)
device->dev.of_node);
bank = kzalloc(sizeof(*bank), GFP_KERNEL);
if (bank == NULL) {
rc = -ENOMEM;
goto failed;
}
if (!bank)
return -ENOMEM;
device->dev.platform_data = bank;
@ -291,25 +289,22 @@ static int axon_ram_probe(struct platform_device *device)
return 0;
failed:
if (bank != NULL) {
if (bank->irq_id)
free_irq(bank->irq_id, device);
if (bank->disk != NULL) {
if (bank->disk->major > 0)
unregister_blkdev(bank->disk->major,
bank->disk->disk_name);
if (bank->disk->flags & GENHD_FL_UP)
del_gendisk(bank->disk);
put_disk(bank->disk);
}
kill_dax(bank->dax_dev);
put_dax(bank->dax_dev);
device->dev.platform_data = NULL;
if (bank->io_addr != 0)
iounmap((void __iomem *) bank->io_addr);
kfree(bank);
if (bank->irq_id)
free_irq(bank->irq_id, device);
if (bank->disk != NULL) {
if (bank->disk->major > 0)
unregister_blkdev(bank->disk->major,
bank->disk->disk_name);
if (bank->disk->flags & GENHD_FL_UP)
del_gendisk(bank->disk);
put_disk(bank->disk);
}
kill_dax(bank->dax_dev);
put_dax(bank->dax_dev);
device->dev.platform_data = NULL;
if (bank->io_addr != 0)
iounmap((void __iomem *) bank->io_addr);
kfree(bank);
return rc;
}