scsi: myrb: Use sysfs_emit in show function callsbacks

Commit Message

Deepak R Varma Dec. 23, 2022, 7:45 p.m. UTC

According to Documentation/filesystems/sysfs.rst, the show() callback
function of kobject attributes should strictly use sysfs_emit instead
of sprintf family functions. Also, merge split lines wherever possible
due to shortened length of lines.

Issue identified using the coccinelle device_attr_show.cocci script.

Signed-off-by: Deepak R Varma <[e-mail]>
---
 drivers/scsi/myrb.c | 25 ++++++++++++-------------
 1 file changed, 12 insertions(+), 13 deletions(-)

--
2.34.1

Patch

diff --git a/drivers/scsi/myrb.c b/drivers/scsi/myrb.c
index e885c1dbf61f..ab7eab0dfa38 100644
--- a/drivers/scsi/myrb.c
+++ b/drivers/scsi/myrb.c
@@ -1767,7 +1767,7 @@  static ssize_t raid_state_show(struct device *dev,
 	int ret;

 	if (!sdev->hostdata)
-		return snprintf(buf, 16, "Unknown\n");
+		return sysfs_emit(buf, "Unknown\n");

 	if (sdev->channel == myrb_logical_channel(sdev->host)) {
 		struct myrb_ldev_info *ldev_info = sdev->hostdata;
@@ -1886,11 +1886,10 @@  static ssize_t raid_level_show(struct device *dev,

 		name = myrb_raidlevel_name(ldev_info->raid_level);
 		if (!name)
-			return snprintf(buf, 32, "Invalid (%02X)\n",
-					ldev_info->state);
-		return snprintf(buf, 32, "%s\n", name);
+			return sysfs_emit(buf, "Invalid (%02X)\n", ldev_info->state);
+		return sysfs_emit(buf, "%s\n", name);
 	}
-	return snprintf(buf, 32, "Physical Drive\n");
+	return sysfs_emit(buf, "Physical Drive\n");
 }
 static DEVICE_ATTR_RO(raid_level);

@@ -1903,17 +1902,17 @@  static ssize_t rebuild_show(struct device *dev,
 	unsigned char status;

 	if (sdev->channel < myrb_logical_channel(sdev->host))
-		return snprintf(buf, 32, "physical device - not rebuilding\n");
+		return sysfs_emit(buf, "physical device - not rebuilding\n");

 	status = myrb_get_rbld_progress(cb, &rbld_buf);

 	if (rbld_buf.ldev_num != sdev->id ||
 	    status != MYRB_STATUS_SUCCESS)
-		return snprintf(buf, 32, "not rebuilding\n");
+		return sysfs_emit(buf, "not rebuilding\n");

-	return snprintf(buf, 32, "rebuilding block %u of %u\n",
-			rbld_buf.ldev_size - rbld_buf.blocks_left,
-			rbld_buf.ldev_size);
+	return sysfs_emit(buf, "rebuilding block %u of %u\n",
+			  rbld_buf.ldev_size - rbld_buf.blocks_left,
+			  rbld_buf.ldev_size);
 }

 static ssize_t rebuild_store(struct device *dev,
@@ -2140,7 +2139,7 @@  static ssize_t ctlr_num_show(struct device *dev,
 	struct Scsi_Host *shost = class_to_shost(dev);
 	struct myrb_hba *cb = shost_priv(shost);

-	return snprintf(buf, 20, "%u\n", cb->ctlr_num);
+	return sysfs_emit(buf, "%u\n", cb->ctlr_num);
 }
 static DEVICE_ATTR_RO(ctlr_num);

@@ -2150,7 +2149,7 @@  static ssize_t firmware_show(struct device *dev,
 	struct Scsi_Host *shost = class_to_shost(dev);
 	struct myrb_hba *cb = shost_priv(shost);

-	return snprintf(buf, 16, "%s\n", cb->fw_version);
+	return sysfs_emit(buf, "%s\n", cb->fw_version);
 }
 static DEVICE_ATTR_RO(firmware);

@@ -2160,7 +2159,7 @@  static ssize_t model_show(struct device *dev,
 	struct Scsi_Host *shost = class_to_shost(dev);
 	struct myrb_hba *cb = shost_priv(shost);

-	return snprintf(buf, 16, "%s\n", cb->model_name);
+	return sysfs_emit(buf, "%s\n", cb->model_name);
 }
 static DEVICE_ATTR_RO(model);