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firmware: vpd: use kasprintf() when forming name of 'raw' attribute

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When creating name for the "raw" attribute, let's switch to using
kaspeintf() instead of doing it by hand. Also make sure we handle
errors.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dmitry Torokhov 2017-05-23 17:07:45 -07:00 committed by Greg Kroah-Hartman
parent 3eec6a1c0c
commit 9920a33e35
1 changed files with 15 additions and 16 deletions
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31
drivers/firmware/google/vpd.c
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@ -190,8 +190,7 @@ static int vpd_section_create_attribs(struct vpd_section *sec)
static int vpd_section_init(const char *name, struct vpd_section *sec,
phys_addr_t physaddr, size_t size)
{
int ret;
int raw_len;
int err;
sec->baseaddr = memremap(physaddr, size, MEMREMAP_WB);
if (!sec->baseaddr)
@ -200,10 +199,11 @@ static int vpd_section_init(const char *name, struct vpd_section *sec,
sec->name = name;
/* We want to export the raw partion with name ${name}_raw */
raw_len = strlen(name) + 5;
sec->raw_name = kzalloc(raw_len, GFP_KERNEL);
strncpy(sec->raw_name, name, raw_len);
strncat(sec->raw_name, "_raw", raw_len);
sec->raw_name = kasprintf(GFP_KERNEL, "%s_raw", name);
if (!sec->raw_name) {
err = -ENOMEM;
goto err_iounmap;
}
sysfs_bin_attr_init(&sec->bin_attr);
sec->bin_attr.attr.name = sec->raw_name;
@ -212,14 +212,14 @@ static int vpd_section_init(const char *name, struct vpd_section *sec,
sec->bin_attr.read = vpd_section_read;
sec->bin_attr.private = sec;
ret = sysfs_create_bin_file(vpd_kobj, &sec->bin_attr);
if (ret)
goto free_sec;
err = sysfs_create_bin_file(vpd_kobj, &sec->bin_attr);
if (err)
goto err_free_raw_name;
sec->kobj = kobject_create_and_add(name, vpd_kobj);
if (!sec->kobj) {
ret = -EINVAL;
goto sysfs_remove;
err = -EINVAL;
goto err_sysfs_remove;
}
INIT_LIST_HEAD(&sec->attribs);
@ -229,14 +229,13 @@ static int vpd_section_init(const char *name, struct vpd_section *sec,
return 0;
sysfs_remove:
err_sysfs_remove:
sysfs_remove_bin_file(vpd_kobj, &sec->bin_attr);
free_sec:
err_free_raw_name:
kfree(sec->raw_name);
err_iounmap:
iounmap(sec->baseaddr);
return ret;
return err;
}
static int vpd_section_destroy(struct vpd_section *sec)