Thread (10 messages) 10 messages, 1 author, 2024-12-21
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[PATCH v2 7/9] misc: eeprom/idt_89hpesx: Constify 'struct bin_attribute'

From: Thomas Weißschuh <linux@weissschuh.net>
Date: 2024-12-21 14:48:16
Also in: lkml
Subsystem: char and misc drivers, the rest · Maintainers: Arnd Bergmann, Greg Kroah-Hartman, Linus Torvalds

The sysfs core now allows instances of 'struct bin_attribute' to be
moved into read-only memory. Make use of that to protect them against
accidental or malicious modifications.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
---
 drivers/misc/eeprom/idt_89hpesx.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/misc/eeprom/idt_89hpesx.c b/drivers/misc/eeprom/idt_89hpesx.c
index 43421fe37d338874ff1c2949497c64ebf0143106..1fc632ebf22f560088084519e5ad8e8b37958368 100644
--- a/drivers/misc/eeprom/idt_89hpesx.c
+++ b/drivers/misc/eeprom/idt_89hpesx.c
@@ -847,7 +847,7 @@ static int idt_csr_read(struct idt_89hpesx_dev *pdev, u16 csraddr, u32 *data)
  * @count:	Number of bytes to write
  */
 static ssize_t eeprom_write(struct file *filp, struct kobject *kobj,
-			    struct bin_attribute *attr,
+			    const struct bin_attribute *attr,
 			    char *buf, loff_t off, size_t count)
 {
 	struct idt_89hpesx_dev *pdev;
@@ -871,7 +871,7 @@ static ssize_t eeprom_write(struct file *filp, struct kobject *kobj,
  * @count:	Number of bytes to write
  */
 static ssize_t eeprom_read(struct file *filp, struct kobject *kobj,
-			   struct bin_attribute *attr,
+			   const struct bin_attribute *attr,
 			   char *buf, loff_t off, size_t count)
 {
 	struct idt_89hpesx_dev *pdev;
@@ -1017,7 +1017,7 @@ static ssize_t idt_dbgfs_csr_read(struct file *filep, char __user *ubuf,
  * NOTE Size will be changed in compliance with OF node. EEPROM attribute will
  * be read-only as well if the corresponding flag is specified in OF node.
  */
-static BIN_ATTR_RW(eeprom, EEPROM_DEF_SIZE);
+static const BIN_ATTR_RW(eeprom, EEPROM_DEF_SIZE);
 
 /*
  * csr_dbgfs_ops - CSR debugfs-node read/write operations
-- 
2.47.1

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