sysfs: treewide: constify attribute callback of bin_is_visible()

The is_bin_visible() callbacks should not modify the struct
bin_attribute passed as argument.
Enforce this by marking the argument as const.

As there are not many callback implementers perform this change
throughout the tree at once.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Ira Weiny <ira.weiny@intel.com>
Acked-by: Krzysztof Wilczyński <kw@linux.com>
Link: https://lore.kernel.org/r/20241103-sysfs-const-bin_attr-v2-5-71110628844c@weissschuh.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/cxl/port.c b/drivers/cxl/port.c
index 9dc3942..24041cf 100644 (file)
--- a/drivers/cxl/port.c
+++ b/drivers/cxl/port.c
@@ -173,7 +173,7 @@ static ssize_t CDAT_read(struct file *filp, struct kobject *kobj,
 static BIN_ATTR_ADMIN_RO(CDAT, 0);
 
 static umode_t cxl_port_bin_attr_is_visible(struct kobject *kobj,
-                                           struct bin_attribute *attr, int i)
+                                           const struct bin_attribute *attr, int i)
 {
        struct device *dev = kobj_to_dev(kobj);
        struct cxl_port *port = to_cxl_port(dev);

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index 0b28b2c..c1c329e 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -3999,7 +3999,7 @@ static umode_t amdgpu_flash_attr_is_visible(struct kobject *kobj, struct attribu
 }
 
 static umode_t amdgpu_bin_flash_attr_is_visible(struct kobject *kobj,
-                                               struct bin_attribute *attr,
+                                               const struct bin_attribute *attr,
                                                int idx)
 {
        struct device *dev = kobj_to_dev(kobj);

diff --git a/drivers/infiniband/hw/qib/qib_sysfs.c b/drivers/infiniband/hw/qib/qib_sysfs.c
index 53ec751..ba2cd68 100644 (file)
--- a/drivers/infiniband/hw/qib/qib_sysfs.c
+++ b/drivers/infiniband/hw/qib/qib_sysfs.c
@@ -283,7 +283,7 @@ static struct bin_attribute *port_ccmgta_attributes[] = {
 };
 
 static umode_t qib_ccmgta_is_bin_visible(struct kobject *kobj,
-                                struct bin_attribute *attr, int n)
+                                const struct bin_attribute *attr, int n)
 {
        struct qib_pportdata *ppd = qib_get_pportdata_kobj(kobj);
 

diff --git a/drivers/mtd/spi-nor/sysfs.c b/drivers/mtd/spi-nor/sysfs.c
index 96064e4..5e9eb26 100644 (file)
--- a/drivers/mtd/spi-nor/sysfs.c
+++ b/drivers/mtd/spi-nor/sysfs.c
@@ -87,7 +87,7 @@ static umode_t spi_nor_sysfs_is_visible(struct kobject *kobj,
 }
 
 static umode_t spi_nor_sysfs_is_bin_visible(struct kobject *kobj,
-                                           struct bin_attribute *attr, int n)
+                                           const struct bin_attribute *attr, int n)
 {
        struct spi_device *spi = to_spi_device(kobj_to_dev(kobj));
        struct spi_mem *spimem = spi_get_drvdata(spi);

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index 63370c7..73e44d7 100644 (file)
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -298,7 +298,8 @@ static umode_t nvmem_bin_attr_get_umode(struct nvmem_device *nvmem)
 }
 
 static umode_t nvmem_bin_attr_is_visible(struct kobject *kobj,
-                                        struct bin_attribute *attr, int i)
+                                        const struct bin_attribute *attr,
+                                        int i)
 {
        struct device *dev = kobj_to_dev(kobj);
        struct nvmem_device *nvmem = to_nvmem_device(dev);

diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 040f01b..1391294 100644 (file)
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -1326,7 +1326,7 @@ static struct bin_attribute *pci_dev_rom_attrs[] = {
 };
 
 static umode_t pci_dev_rom_attr_is_visible(struct kobject *kobj,
-                                          struct bin_attribute *a, int n)
+                                          const struct bin_attribute *a, int n)
 {
        struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj));
 

diff --git a/drivers/pci/vpd.c b/drivers/pci/vpd.c
index e4300f5..a469bcb 100644 (file)
--- a/drivers/pci/vpd.c
+++ b/drivers/pci/vpd.c
@@ -325,7 +325,7 @@ static struct bin_attribute *vpd_attrs[] = {
 };
 
 static umode_t vpd_attr_is_visible(struct kobject *kobj,
-                                  struct bin_attribute *a, int n)
+                                  const struct bin_attribute *a, int n)
 {
        struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj));
 

diff --git a/drivers/platform/x86/amd/hsmp.c b/drivers/platform/x86/amd/hsmp.c
index 8fcf38e..8f00850 100644 (file)
--- a/drivers/platform/x86/amd/hsmp.c
+++ b/drivers/platform/x86/amd/hsmp.c
@@ -620,7 +620,7 @@ static int hsmp_get_tbl_dram_base(u16 sock_ind)
 }
 
 static umode_t hsmp_is_sock_attr_visible(struct kobject *kobj,
-                                        struct bin_attribute *battr, int id)
+                                        const struct bin_attribute *battr, int id)
 {
        if (plat_dev.proto_ver == HSMP_PROTO_VER6)
                return battr->attr.mode;

diff --git a/drivers/platform/x86/intel/sdsi.c b/drivers/platform/x86/intel/sdsi.c
index 9d13762..33f33b1 100644 (file)
--- a/drivers/platform/x86/intel/sdsi.c
+++ b/drivers/platform/x86/intel/sdsi.c
@@ -541,7 +541,7 @@ static struct bin_attribute *sdsi_bin_attrs[] = {
 };
 
 static umode_t
-sdsi_battr_is_visible(struct kobject *kobj, struct bin_attribute *attr, int n)
+sdsi_battr_is_visible(struct kobject *kobj, const struct bin_attribute *attr, int n)
 {
        struct device *dev = kobj_to_dev(kobj);
        struct sdsi_priv *priv = dev_get_drvdata(dev);

diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 32f94db..f3a1ecb 100644 (file)
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -1274,7 +1274,7 @@ static umode_t scsi_sdev_attr_is_visible(struct kobject *kobj,
 }
 
 static umode_t scsi_sdev_bin_attr_is_visible(struct kobject *kobj,
-                                            struct bin_attribute *attr, int i)
+                                            const struct bin_attribute *attr, int i)
 {
        struct device *dev = kobj_to_dev(kobj);
        struct scsi_device *sdev = to_scsi_device(dev);

diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index 61b6d97..b4cba23 100644 (file)
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -925,7 +925,7 @@ static struct bin_attribute *dev_bin_attrs[] = {
 };
 
 static umode_t dev_bin_attrs_are_visible(struct kobject *kobj,
-               struct bin_attribute *a, int n)
+               const struct bin_attribute *a, int n)
 {
        struct device *dev = kobj_to_dev(kobj);
        struct usb_device *udev = to_usb_device(dev);

diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index 4746ccc..d1b22d5 100644 (file)
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -101,7 +101,7 @@ struct attribute_group {
        umode_t                 (*is_visible)(struct kobject *,
                                              struct attribute *, int);
        umode_t                 (*is_bin_visible)(struct kobject *,
-                                                 struct bin_attribute *, int);
+                                                 const struct bin_attribute *, int);
        size_t                  (*bin_size)(struct kobject *,
                                            const struct bin_attribute *,
                                            int);
@@ -199,22 +199,22 @@ struct attribute_group {
  * attributes, the group visibility is determined by the function
  * specified to is_visible() not is_bin_visible()
  */
-#define DEFINE_SYSFS_BIN_GROUP_VISIBLE(name)                             \
-       static inline umode_t sysfs_group_visible_##name(                \
-               struct kobject *kobj, struct bin_attribute *attr, int n) \
-       {                                                                \
-               if (n == 0 && !name##_group_visible(kobj))               \
-                       return SYSFS_GROUP_INVISIBLE;                    \
-               return name##_attr_visible(kobj, attr, n);               \
+#define DEFINE_SYSFS_BIN_GROUP_VISIBLE(name)                                   \
+       static inline umode_t sysfs_group_visible_##name(                      \
+               struct kobject *kobj, const struct bin_attribute *attr, int n) \
+       {                                                                      \
+               if (n == 0 && !name##_group_visible(kobj))                     \
+                       return SYSFS_GROUP_INVISIBLE;                          \
+               return name##_attr_visible(kobj, attr, n);                     \
        }
 
-#define DEFINE_SIMPLE_SYSFS_BIN_GROUP_VISIBLE(name)                   \
-       static inline umode_t sysfs_group_visible_##name(             \
-               struct kobject *kobj, struct bin_attribute *a, int n) \
-       {                                                             \
-               if (n == 0 && !name##_group_visible(kobj))            \
-                       return SYSFS_GROUP_INVISIBLE;                 \
-               return a->mode;                                       \
+#define DEFINE_SIMPLE_SYSFS_BIN_GROUP_VISIBLE(name)                         \
+       static inline umode_t sysfs_group_visible_##name(                   \
+               struct kobject *kobj, const struct bin_attribute *a, int n) \
+       {                                                                   \
+               if (n == 0 && !name##_group_visible(kobj))                  \
+                       return SYSFS_GROUP_INVISIBLE;                       \
+               return a->mode;                                             \
        }
 
 #define SYSFS_GROUP_VISIBLE(fn) sysfs_group_visible_##fn