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[PATCH] driver/base/memory.c: handle errors properly 

Do proper error-checking and propagation in drivers/base/memory.c, hence fix
__must_check warnings.

Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andrew Morton 2006-12-06 20:37:29 -08:00 committed by Linus Torvalds
parent 0d75565f1e
commit 28ec24e232
1 changed files with 23 additions and 11 deletions
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34
drivers/base/memory.c
View File

@ -290,9 +290,8 @@ static CLASS_ATTR(block_size_bytes, 0444, print_block_size, NULL);
static int block_size_init(void)
{
sysfs_create_file(&memory_sysdev_class.kset.kobj,
&class_attr_block_size_bytes.attr);
return 0;
return sysfs_create_file(&memory_sysdev_class.kset.kobj,
&class_attr_block_size_bytes.attr);
}
/*
@ -323,12 +322,14 @@ static CLASS_ATTR(probe, 0700, NULL, memory_probe_store);
static int memory_probe_init(void)
{
sysfs_create_file(&memory_sysdev_class.kset.kobj,
&class_attr_probe.attr);
return 0;
return sysfs_create_file(&memory_sysdev_class.kset.kobj,
&class_attr_probe.attr);
}
#else
#define memory_probe_init(...) do {} while (0)
static inline int memory_probe_init(void)
{
return 0;
}
#endif
/*
@ -431,9 +432,12 @@ int __init memory_dev_init(void)
{
unsigned int i;
int ret;
int err;
memory_sysdev_class.kset.uevent_ops = &memory_uevent_ops;
ret = sysdev_class_register(&memory_sysdev_class);
if (ret)
goto out;
/*
* Create entries for memory sections that were found
@ -442,11 +446,19 @@ int __init memory_dev_init(void)
for (i = 0; i < NR_MEM_SECTIONS; i++) {
if (!valid_section_nr(i))
continue;
add_memory_block(0, __nr_to_section(i), MEM_ONLINE, 0);
err = add_memory_block(0, __nr_to_section(i), MEM_ONLINE, 0);
if (!ret)
ret = err;
}
memory_probe_init();
block_size_init();
err = memory_probe_init();
if (!ret)
ret = err;
err = block_size_init();
if (!ret)
ret = err;
out:
if (ret)
printk(KERN_ERR "%s() failed: %d\n", __FUNCTION__, ret);
return ret;
}