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snsc: check return value of class_create

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return value of class_create should be considered in
module init function.

Signed-off-by: Zhouyi Zhou <zhouzhouyi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Zhouyi Zhou 2016-08-10 16:06:43 +08:00 committed by Greg Kroah-Hartman
parent 26ec99b105
commit c1e8ad2311
1 changed files with 6 additions and 1 deletions
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7
drivers/char/snsc.c
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@ -385,13 +385,18 @@ scdrv_init(void)
event_nasid = ia64_sn_get_console_nasid();
snsc_class = class_create(THIS_MODULE, SYSCTL_BASENAME);
if (IS_ERR(snsc_class)) {
printk("%s: failed to allocate class\n", __func__);
return PTR_ERR(snsc_class);
}
if (alloc_chrdev_region(&first_dev, 0, num_cnodes,
SYSCTL_BASENAME) < 0) {
printk("%s: failed to register SN system controller device\n",
__func__);
return -ENODEV;
}
snsc_class = class_create(THIS_MODULE, SYSCTL_BASENAME);
for (cnode = 0; cnode < num_cnodes; cnode++) {
geoid = cnodeid_get_geoid(cnode);