[PATCH 5/5] drm/amd/display: Constify 'struct bin_attribute'

[Thomas Weißschuh]

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 at weissschuh.net>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
index e339c7a8d541c962aa44ae25ad97b864285394b8..e27d077396327bbe25014aec5b978293b1c20dac 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
@@ -614,7 +614,7 @@ static void update_config(void *handle, struct cp_psp_stream_config *config)
  *	incorrect/corrupted and we should correct our SRM by getting it from PSP
  */
 static ssize_t srm_data_write(struct file *filp, struct kobject *kobj,
-			      struct bin_attribute *bin_attr, char *buffer,
+			      const struct bin_attribute *bin_attr, char *buffer,
 			      loff_t pos, size_t count)
 {
 	struct hdcp_workqueue *work;
@@ -638,7 +638,7 @@ static ssize_t srm_data_write(struct file *filp, struct kobject *kobj,
 }
 
 static ssize_t srm_data_read(struct file *filp, struct kobject *kobj,
-			     struct bin_attribute *bin_attr, char *buffer,
+			     const struct bin_attribute *bin_attr, char *buffer,
 			     loff_t pos, size_t count)
 {
 	struct hdcp_workqueue *work;
@@ -698,8 +698,8 @@ static ssize_t srm_data_read(struct file *filp, struct kobject *kobj,
 static const struct bin_attribute data_attr = {
 	.attr = {.name = "hdcp_srm", .mode = 0664},
 	.size = PSP_HDCP_SRM_FIRST_GEN_MAX_SIZE, /* Limit SRM size */
-	.write = srm_data_write,
-	.read = srm_data_read,
+	.write_new = srm_data_write,
+	.read_new = srm_data_read,
 };
 
 struct hdcp_workqueue *hdcp_create_workqueue(struct amdgpu_device *adev,

-- 
2.47.1