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usb: atm: don't use snprintf() for sysfs attrs 

kernel/cpu.c: don't use snprintf() for sysfs attrs

As per the documentation (Documentation/filesystems/sysfs.rst),
snprintf() should not be used for formatting values returned by sysfs.

In all of these cases, sprintf() suffices as we know that the formatted
strings will be less than PAGE_SIZE in length.

Issue identified by Coccinelle.

Signed-off-by: Alex Dewar <alex.dewar90@gmail.com>
Link: https://lore.kernel.org/r/20200824222322.22962-1-alex.dewar90@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alex Dewar 2020-08-24 23:23:20 +01:00 committed by Greg Kroah-Hartman
parent 28157b8c7d
commit cb06b385d5
1 changed files with 13 additions and 14 deletions
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27
drivers/usb/atm/cxacru.c
View File

@ -230,12 +230,12 @@ CXACRU__ATTR_INIT(_name)
static ssize_t cxacru_sysfs_showattr_u32(u32 value, char *buf)
{
return snprintf(buf, PAGE_SIZE, "%u\n", value);
return sprintf(buf, "%u\n", value);
}
static ssize_t cxacru_sysfs_showattr_s8(s8 value, char *buf)
{
return snprintf(buf, PAGE_SIZE, "%d\n", value);
return sprintf(buf, "%d\n", value);
}
static ssize_t cxacru_sysfs_showattr_dB(s16 value, char *buf)
@ -255,8 +255,8 @@ static ssize_t cxacru_sysfs_showattr_bool(u32 value, char *buf)
static char *str[] = { "no", "yes" };
if (unlikely(value >= ARRAY_SIZE(str)))
return snprintf(buf, PAGE_SIZE, "%u\n", value);
return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
return sprintf(buf, "%u\n", value);
return sprintf(buf, "%s\n", str[value]);
}
static ssize_t cxacru_sysfs_showattr_LINK(u32 value, char *buf)
@ -264,8 +264,8 @@ static ssize_t cxacru_sysfs_showattr_LINK(u32 value, char *buf)
static char *str[] = { NULL, "not connected", "connected", "lost" };
if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL))
return snprintf(buf, PAGE_SIZE, "%u\n", value);
return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
return sprintf(buf, "%u\n", value);
return sprintf(buf, "%s\n", str[value]);
}
static ssize_t cxacru_sysfs_showattr_LINE(u32 value, char *buf)
@ -275,8 +275,8 @@ static ssize_t cxacru_sysfs_showattr_LINE(u32 value, char *buf)
"waiting", "initialising"
};
if (unlikely(value >= ARRAY_SIZE(str)))
return snprintf(buf, PAGE_SIZE, "%u\n", value);
return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
return sprintf(buf, "%u\n", value);
return sprintf(buf, "%s\n", str[value]);
}
static ssize_t cxacru_sysfs_showattr_MODU(u32 value, char *buf)
@ -288,8 +288,8 @@ static ssize_t cxacru_sysfs_showattr_MODU(u32 value, char *buf)
"ITU-T G.992.2 (G.LITE)"
};
if (unlikely(value >= ARRAY_SIZE(str)))
return snprintf(buf, PAGE_SIZE, "%u\n", value);
return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
return sprintf(buf, "%u\n", value);
return sprintf(buf, "%s\n", str[value]);
}
/*
@ -309,8 +309,7 @@ static ssize_t mac_address_show(struct device *dev,
if (instance == NULL || instance->usbatm->atm_dev == NULL)
return -ENODEV;
return snprintf(buf, PAGE_SIZE, "%pM\n",
instance->usbatm->atm_dev->esi);
return sprintf(buf, "%pM\n", instance->usbatm->atm_dev->esi);
}
static ssize_t adsl_state_show(struct device *dev,
@ -326,8 +325,8 @@ static ssize_t adsl_state_show(struct device *dev,
value = instance->card_info[CXINF_LINE_STARTABLE];
if (unlikely(value >= ARRAY_SIZE(str)))
return snprintf(buf, PAGE_SIZE, "%u\n", value);
return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
return sprintf(buf, "%u\n", value);
return sprintf(buf, "%s\n", str[value]);
}
static ssize_t adsl_state_store(struct device *dev,