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| author | Vladimir Zapolskiy <vz@mleia.com> | 2016-04-29 01:19:06 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-04-29 04:34:04 +0200 |
| commit | 99f23c2cded85a377325aa9fd374ffa3d55d1088 (patch) | |
| tree | 9bf18f1185d2c316ac58a2f9ca504c39c136b775 | |
| parent | mm/memory-failure: fix race with compound page split/merge (diff) | |
| download | linux-99f23c2cded85a377325aa9fd374ffa3d55d1088.tar.xz linux-99f23c2cded85a377325aa9fd374ffa3d55d1088.zip | |
rapidio: fix potential NULL pointer dereference
The change fixes improper check for a returned error value by
class_create() function, which on error returns ERR_PTR() value, thus the
original check always results in a dead code on error path.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/rapidio/devices/rio_mport_cdev.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/rapidio/devices/rio_mport_cdev.c b/drivers/rapidio/devices/rio_mport_cdev.c index 5d4d91846357..96168b819044 100644 --- a/drivers/rapidio/devices/rio_mport_cdev.c +++ b/drivers/rapidio/devices/rio_mport_cdev.c @@ -2669,9 +2669,9 @@ static int __init mport_init(void) /* Create device class needed by udev */ dev_class = class_create(THIS_MODULE, DRV_NAME); - if (!dev_class) { + if (IS_ERR(dev_class)) { rmcd_error("Unable to create " DRV_NAME " class"); - return -EINVAL; + return PTR_ERR(dev_class); } ret = alloc_chrdev_region(&dev_number, 0, RIO_MAX_MPORTS, DRV_NAME); |