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[V2] soundwire: sysfs: Constify static struct attribute_group

Message ID 20210117221622.34315-1-rikard.falkeborn@gmail.com (mailing list archive)
State New, archived
Headers show
Series [V2] soundwire: sysfs: Constify static struct attribute_group | expand

Commit Message

Rikard Falkeborn Jan. 17, 2021, 10:16 p.m. UTC
The only place sdw_slave_dev_attr_group is used is when its address is
passed to devm_device_add_group() which takes a pointer to const struct
attribute_group. Make it const to allow the compiler to put it in
read-only memory. This makes all attribute_group structs in the file
const. Done with the help of Coccinelle.

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
---
Changes since v 1: Fix spelling in commit message title (sorry for the noise...)

 drivers/soundwire/sysfs_slave.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Vinod Koul Jan. 19, 2021, 2:53 p.m. UTC | #1
On 17-01-21, 23:16, Rikard Falkeborn wrote:
> The only place sdw_slave_dev_attr_group is used is when its address is
> passed to devm_device_add_group() which takes a pointer to const struct
> attribute_group. Make it const to allow the compiler to put it in
> read-only memory. This makes all attribute_group structs in the file
> const. Done with the help of Coccinelle.

Applied, thanks
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Patch

diff --git a/drivers/soundwire/sysfs_slave.c b/drivers/soundwire/sysfs_slave.c
index b48b6617a396..3210359cd944 100644
--- a/drivers/soundwire/sysfs_slave.c
+++ b/drivers/soundwire/sysfs_slave.c
@@ -130,7 +130,7 @@  static struct attribute *slave_dev_attrs[] = {
  * we don't use ATTRIBUTES_GROUP here since we want to add a subdirectory
  * for device-level properties
  */
-static struct attribute_group sdw_slave_dev_attr_group = {
+static const struct attribute_group sdw_slave_dev_attr_group = {
 	.attrs	= slave_dev_attrs,
 	.name = "dev-properties",
 };