char: ipmi: replace snprintf in show functions with sysfs_emit

coccicheck complains about the use of snprintf() in sysfs show
functions:
WARNING  use scnprintf or sprintf

Use sysfs_emit instead of scnprintf, snprintf or sprintf makes more
sense.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Ye Guojin <ye.guojin@zte.com.cn>
Message-Id: <20211021110608.1060260-1-ye.guojin@zte.com.cn>
Signed-off-by: Corey Minyard <cminyard@mvista.com>

drivers/char/ipmi/ipmi_msghandler.c

@@ -2716,7 +2716,7 @@ static ssize_t device_id_show(struct device *dev,
 	if (rv)
 		return rv;
 
-	return snprintf(buf, 10, "%u\n", id.device_id);
+	return sysfs_emit(buf, "%u\n", id.device_id);
 }
 static DEVICE_ATTR_RO(device_id);
 
@@ -2732,7 +2732,7 @@ static ssize_t provides_device_sdrs_show(struct device *dev,
 	if (rv)
 		return rv;
 
-	return snprintf(buf, 10, "%u\n", (id.device_revision & 0x80) >> 7);
+	return sysfs_emit(buf, "%u\n", (id.device_revision & 0x80) >> 7);
 }
 static DEVICE_ATTR_RO(provides_device_sdrs);
 
@@ -2747,7 +2747,7 @@ static ssize_t revision_show(struct device *dev, struct device_attribute *attr,
 	if (rv)
 		return rv;
 
-	return snprintf(buf, 20, "%u\n", id.device_revision & 0x0F);
+	return sysfs_emit(buf, "%u\n", id.device_revision & 0x0F);
 }
 static DEVICE_ATTR_RO(revision);
 
@@ -2763,7 +2763,7 @@ static ssize_t firmware_revision_show(struct device *dev,
 	if (rv)
 		return rv;
 
-	return snprintf(buf, 20, "%u.%x\n", id.firmware_revision_1,
+	return sysfs_emit(buf, "%u.%x\n", id.firmware_revision_1,
 			id.firmware_revision_2);
 }
 static DEVICE_ATTR_RO(firmware_revision);
@@ -2780,7 +2780,7 @@ static ssize_t ipmi_version_show(struct device *dev,
 	if (rv)
 		return rv;
 
-	return snprintf(buf, 20, "%u.%u\n",
+	return sysfs_emit(buf, "%u.%u\n",
 			ipmi_version_major(&id),
 			ipmi_version_minor(&id));
 }
@@ -2798,7 +2798,7 @@ static ssize_t add_dev_support_show(struct device *dev,
 	if (rv)
 		return rv;
 
-	return snprintf(buf, 10, "0x%02x\n", id.additional_device_support);
+	return sysfs_emit(buf, "0x%02x\n", id.additional_device_support);
 }
 static DEVICE_ATTR(additional_device_support, S_IRUGO, add_dev_support_show,
 		   NULL);
@@ -2815,7 +2815,7 @@ static ssize_t manufacturer_id_show(struct device *dev,
 	if (rv)
 		return rv;
 
-	return snprintf(buf, 20, "0x%6.6x\n", id.manufacturer_id);
+	return sysfs_emit(buf, "0x%6.6x\n", id.manufacturer_id);
 }
 static DEVICE_ATTR_RO(manufacturer_id);
 
@@ -2831,7 +2831,7 @@ static ssize_t product_id_show(struct device *dev,
 	if (rv)
 		return rv;
 
-	return snprintf(buf, 10, "0x%4.4x\n", id.product_id);
+	return sysfs_emit(buf, "0x%4.4x\n", id.product_id);
 }
 static DEVICE_ATTR_RO(product_id);
 
@@ -2847,7 +2847,7 @@ static ssize_t aux_firmware_rev_show(struct device *dev,
 	if (rv)
 		return rv;
 
-	return snprintf(buf, 21, "0x%02x 0x%02x 0x%02x 0x%02x\n",
+	return sysfs_emit(buf, "0x%02x 0x%02x 0x%02x 0x%02x\n",
 			id.aux_firmware_revision[3],
 			id.aux_firmware_revision[2],
 			id.aux_firmware_revision[1],
@@ -2869,7 +2869,7 @@ static ssize_t guid_show(struct device *dev, struct device_attribute *attr,
 	if (!guid_set)
 		return -ENOENT;
 
-	return snprintf(buf, UUID_STRING_LEN + 1 + 1, "%pUl\n", &guid);
+	return sysfs_emit(buf, "%pUl\n", &guid);
 }
 static DEVICE_ATTR_RO(guid);
 

drivers/char/ipmi/ipmi_si_intf.c

@@ -1603,7 +1603,7 @@ static ssize_t name##_show(struct device *dev,			\
 {									\
 	struct smi_info *smi_info = dev_get_drvdata(dev);		\
 									\
-	return snprintf(buf, 10, "%u\n", smi_get_stat(smi_info, name));	\
+	return sysfs_emit(buf, "%u\n", smi_get_stat(smi_info, name));	\
 }									\
 static DEVICE_ATTR_RO(name)
 
@@ -1613,7 +1613,7 @@ static ssize_t type_show(struct device *dev,
 {
 	struct smi_info *smi_info = dev_get_drvdata(dev);
 
-	return snprintf(buf, 10, "%s\n", si_to_str[smi_info->io.si_type]);
+	return sysfs_emit(buf, "%s\n", si_to_str[smi_info->io.si_type]);
 }
 static DEVICE_ATTR_RO(type);
 
@@ -1624,7 +1624,7 @@ static ssize_t interrupts_enabled_show(struct device *dev,
 	struct smi_info *smi_info = dev_get_drvdata(dev);
 	int enabled = smi_info->io.irq && !smi_info->interrupt_disabled;
 
-	return snprintf(buf, 10, "%d\n", enabled);
+	return sysfs_emit(buf, "%d\n", enabled);
 }
 static DEVICE_ATTR_RO(interrupts_enabled);
 
@@ -1646,7 +1646,7 @@ static ssize_t params_show(struct device *dev,
 {
 	struct smi_info *smi_info = dev_get_drvdata(dev);
 
-	return snprintf(buf, 200,
+	return sysfs_emit(buf,
 			"%s,%s,0x%lx,rsp=%d,rsi=%d,rsh=%d,irq=%d,ipmb=%d\n",
 			si_to_str[smi_info->io.si_type],
 			addr_space_to_str[smi_info->io.addr_space],

drivers/char/ipmi/ipmi_ssif.c

@@ -1190,7 +1190,7 @@ static ssize_t ipmi_##name##_show(struct device *dev,			\
 {									\
 	struct ssif_info *ssif_info = dev_get_drvdata(dev);		\
 									\
-	return snprintf(buf, 10, "%u\n", ssif_get_stat(ssif_info, name));\
+	return sysfs_emit(buf, "%u\n", ssif_get_stat(ssif_info, name));\
 }									\
 static DEVICE_ATTR(name, S_IRUGO, ipmi_##name##_show, NULL)
 
@@ -1198,7 +1198,7 @@ static ssize_t ipmi_type_show(struct device *dev,
 			      struct device_attribute *attr,
 			      char *buf)
 {
-	return snprintf(buf, 10, "ssif\n");
+	return sysfs_emit(buf, "ssif\n");
 }
 static DEVICE_ATTR(type, S_IRUGO, ipmi_type_show, NULL);