diff mbox series

[5/5] scsi: arcmsr: Use BIN_ATTR_ADMIN_WO() for bin_attribute definitions

Message ID 20241202-sysfs-const-bin_attr-admin_wo-v1-5-f489116210bf@weissschuh.net (mailing list archive)
State Not Applicable
Headers show
Series sysfs: introduce and use macro BIN_ATTR_ADMIN_WO() | expand

Commit Message

Thomas Weißschuh Dec. 2, 2024, 7 p.m. UTC
Using the macro saves some lines of code and prepares the attributes for
the general constifications of struct bin_attributes.

While at it also constify the callback parameters.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
---
 drivers/scsi/arcmsr/arcmsr_attr.c | 73 ++++++++++++++-------------------------
 1 file changed, 26 insertions(+), 47 deletions(-)

Comments

Martin K. Petersen Dec. 4, 2024, 7:56 p.m. UTC | #1
Thomas,

> Using the macro saves some lines of code and prepares the attributes for
> the general constifications of struct bin_attributes.
>
> While at it also constify the callback parameters.

Looks OK to me.

Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
diff mbox series

Patch

diff --git a/drivers/scsi/arcmsr/arcmsr_attr.c b/drivers/scsi/arcmsr/arcmsr_attr.c
index baeb5e79569026f1af6612705689219bb4a7052f..af7750b551910b06254e443c25bebf323e29f162 100644
--- a/drivers/scsi/arcmsr/arcmsr_attr.c
+++ b/drivers/scsi/arcmsr/arcmsr_attr.c
@@ -58,11 +58,11 @@ 
 #include <scsi/scsi_transport.h>
 #include "arcmsr.h"
 
-static ssize_t arcmsr_sysfs_iop_message_read(struct file *filp,
-					     struct kobject *kobj,
-					     struct bin_attribute *bin,
-					     char *buf, loff_t off,
-					     size_t count)
+static ssize_t mu_read_read(struct file *filp,
+			    struct kobject *kobj,
+			    const struct bin_attribute *bin,
+			    char *buf, loff_t off,
+			    size_t count)
 {
 	struct device *dev = container_of(kobj,struct device,kobj);
 	struct Scsi_Host *host = class_to_shost(dev);
@@ -105,11 +105,11 @@  static ssize_t arcmsr_sysfs_iop_message_read(struct file *filp,
 	return allxfer_len;
 }
 
-static ssize_t arcmsr_sysfs_iop_message_write(struct file *filp,
-					      struct kobject *kobj,
-					      struct bin_attribute *bin,
-					      char *buf, loff_t off,
-					      size_t count)
+static ssize_t mu_write_write(struct file *filp,
+			      struct kobject *kobj,
+			      const struct bin_attribute *bin,
+			      char *buf, loff_t off,
+			      size_t count)
 {
 	struct device *dev = container_of(kobj,struct device,kobj);
 	struct Scsi_Host *host = class_to_shost(dev);
@@ -153,11 +153,11 @@  static ssize_t arcmsr_sysfs_iop_message_write(struct file *filp,
 	}
 }
 
-static ssize_t arcmsr_sysfs_iop_message_clear(struct file *filp,
-					      struct kobject *kobj,
-					      struct bin_attribute *bin,
-					      char *buf, loff_t off,
-					      size_t count)
+static ssize_t mu_clear_write(struct file *filp,
+			      struct kobject *kobj,
+			      const struct bin_attribute *bin,
+			      char *buf, loff_t off,
+			      size_t count)
 {
 	struct device *dev = container_of(kobj,struct device,kobj);
 	struct Scsi_Host *host = class_to_shost(dev);
@@ -188,58 +188,37 @@  static ssize_t arcmsr_sysfs_iop_message_clear(struct file *filp,
 	return 1;
 }
 
-static const struct bin_attribute arcmsr_sysfs_message_read_attr = {
-	.attr = {
-		.name = "mu_read",
-		.mode = S_IRUSR ,
-	},
-	.size = ARCMSR_API_DATA_BUFLEN,
-	.read = arcmsr_sysfs_iop_message_read,
-};
+static const BIN_ATTR_ADMIN_RO(mu_read, ARCMSR_API_DATA_BUFLEN);
 
-static const struct bin_attribute arcmsr_sysfs_message_write_attr = {
-	.attr = {
-		.name = "mu_write",
-		.mode = S_IWUSR,
-	},
-	.size = ARCMSR_API_DATA_BUFLEN,
-	.write = arcmsr_sysfs_iop_message_write,
-};
+static const BIN_ATTR_ADMIN_WO(mu_write, ARCMSR_API_DATA_BUFLEN);
 
-static const struct bin_attribute arcmsr_sysfs_message_clear_attr = {
-	.attr = {
-		.name = "mu_clear",
-		.mode = S_IWUSR,
-	},
-	.size = 1,
-	.write = arcmsr_sysfs_iop_message_clear,
-};
+static const BIN_ATTR_ADMIN_WO(mu_clear, 1);
 
 int arcmsr_alloc_sysfs_attr(struct AdapterControlBlock *acb)
 {
 	struct Scsi_Host *host = acb->host;
 	int error;
 
-	error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr);
+	error = sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_mu_read);
 	if (error) {
 		printk(KERN_ERR "arcmsr: alloc sysfs mu_read failed\n");
 		goto error_bin_file_message_read;
 	}
-	error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr);
+	error = sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_mu_write);
 	if (error) {
 		printk(KERN_ERR "arcmsr: alloc sysfs mu_write failed\n");
 		goto error_bin_file_message_write;
 	}
-	error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_clear_attr);
+	error = sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_mu_clear);
 	if (error) {
 		printk(KERN_ERR "arcmsr: alloc sysfs mu_clear failed\n");
 		goto error_bin_file_message_clear;
 	}
 	return 0;
 error_bin_file_message_clear:
-	sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr);
+	sysfs_remove_bin_file(&host->shost_dev.kobj, &bin_attr_mu_write);
 error_bin_file_message_write:
-	sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr);
+	sysfs_remove_bin_file(&host->shost_dev.kobj, &bin_attr_mu_read);
 error_bin_file_message_read:
 	return error;
 }
@@ -248,9 +227,9 @@  void arcmsr_free_sysfs_attr(struct AdapterControlBlock *acb)
 {
 	struct Scsi_Host *host = acb->host;
 
-	sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_clear_attr);
-	sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr);
-	sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr);
+	sysfs_remove_bin_file(&host->shost_dev.kobj, &bin_attr_mu_clear);
+	sysfs_remove_bin_file(&host->shost_dev.kobj, &bin_attr_mu_write);
+	sysfs_remove_bin_file(&host->shost_dev.kobj, &bin_attr_mu_read);
 }