[PATCH 1/2] EDAC: use proper list of struct attribute for attributes

[PATCH 1/2] EDAC: use proper list of struct attribute for attributes

[Greg Kroah-Hartman]

The edac sysfs code is doing some crazy casting of the list of
attributes that is not necessary at all.  Instead, properly point to the
correct attribute structure in the lists, which removes the need to cast
anything and the code is now properly typesafe (as much as sysfs
attribute logic is typesafe...)

Cc: Borislav Petkov <bp@alien8.de>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: James Morse <james.morse@arm.com>
Cc: Robert Richter <rric@kernel.org>
Cc: linux-edac@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/edac/edac_device_sysfs.c | 28 ++++++++++++++--------------
 1 file changed, 14 insertions(+), 14 deletions(-)

diff --git a/drivers/edac/edac_device_sysfs.c b/drivers/edac/edac_device_sysfs.c
index 5e7593753799..f4aefced2ccf 100644
--- a/drivers/edac/edac_device_sysfs.c
+++ b/drivers/edac/edac_device_sysfs.c
@@ -163,11 +163,11 @@ CTL_INFO_ATTR(poll_msec, S_IRUGO | S_IWUSR,
 	edac_device_ctl_poll_msec_show, edac_device_ctl_poll_msec_store);
 
 /* Base Attributes of the EDAC_DEVICE ECC object */
-static struct ctl_info_attribute *device_ctrl_attr[] = {
-	&attr_ctl_info_panic_on_ue,
-	&attr_ctl_info_log_ue,
-	&attr_ctl_info_log_ce,
-	&attr_ctl_info_poll_msec,
+static struct attribute *device_ctrl_attr[] = {
+	&attr_ctl_info_panic_on_ue.attr,
+	&attr_ctl_info_log_ue.attr,
+	&attr_ctl_info_log_ce.attr,
+	&attr_ctl_info_poll_msec.attr,
 	NULL,
 };
 
@@ -217,7 +217,7 @@ static void edac_device_ctrl_master_release(struct kobject *kobj)
 static struct kobj_type ktype_device_ctrl = {
 	.release = edac_device_ctrl_master_release,
 	.sysfs_ops = &device_ctl_info_ops,
-	.default_attrs = (struct attribute **)device_ctrl_attr,
+	.default_attrs = device_ctrl_attr,
 };
 
 /*
@@ -389,9 +389,9 @@ INSTANCE_ATTR(ce_count, S_IRUGO, instance_ce_count_show, NULL);
 INSTANCE_ATTR(ue_count, S_IRUGO, instance_ue_count_show, NULL);
 
 /* list of edac_dev 'instance' attributes */
-static struct instance_attribute *device_instance_attr[] = {
-	&attr_instance_ce_count,
-	&attr_instance_ue_count,
+static struct attribute *device_instance_attr[] = {
+	&attr_instance_ce_count.attr,
+	&attr_instance_ue_count.attr,
 	NULL,
 };
 
@@ -399,7 +399,7 @@ static struct instance_attribute *device_instance_attr[] = {
 static struct kobj_type ktype_instance_ctrl = {
 	.release = edac_device_ctrl_instance_release,
 	.sysfs_ops = &device_instance_ops,
-	.default_attrs = (struct attribute **)device_instance_attr,
+	.default_attrs = device_instance_attr,
 };
 
 /* edac_dev -> instance -> block information */
@@ -487,9 +487,9 @@ BLOCK_ATTR(ce_count, S_IRUGO, block_ce_count_show, NULL);
 BLOCK_ATTR(ue_count, S_IRUGO, block_ue_count_show, NULL);
 
 /* list of edac_dev 'block' attributes */
-static struct edac_dev_sysfs_block_attribute *device_block_attr[] = {
-	&attr_block_ce_count,
-	&attr_block_ue_count,
+static struct attribute *device_block_attr[] = {
+	&attr_block_ce_count.attr,
+	&attr_block_ue_count.attr,
 	NULL,
 };
 
@@ -497,7 +497,7 @@ static struct edac_dev_sysfs_block_attribute *device_block_attr[] = {
 static struct kobj_type ktype_block_ctrl = {
 	.release = edac_device_ctrl_block_release,
 	.sysfs_ops = &device_block_ops,
-	.default_attrs = (struct attribute **)device_block_attr,
+	.default_attrs = device_block_attr,
 };
 
 /* block ctor/dtor  code */
-- 
2.34.1

[PATCH 2/2] EDAC: use default_groups in kobj_type

[Greg Kroah-Hartman]

There are currently 2 ways to create a set of sysfs files for a
kobj_type, through the default_attrs field, and the default_groups
field.  Move the edac sysfs code to use default_groups field which has
been the preferred way since aa30f47cf666 ("kobject: Add support for
default attribute groups to kobj_type") so that we can soon get rid of
the obsolete default_attrs field.

Cc: Borislav Petkov <bp@alien8.de>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: James Morse <james.morse@arm.com>
Cc: Robert Richter <rric@kernel.org>
Cc: linux-edac@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/edac/edac_device_sysfs.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/drivers/edac/edac_device_sysfs.c b/drivers/edac/edac_device_sysfs.c
index f4aefced2ccf..9a61d92bdf42 100644
--- a/drivers/edac/edac_device_sysfs.c
+++ b/drivers/edac/edac_device_sysfs.c
@@ -163,13 +163,14 @@ CTL_INFO_ATTR(poll_msec, S_IRUGO | S_IWUSR,
 	edac_device_ctl_poll_msec_show, edac_device_ctl_poll_msec_store);
 
 /* Base Attributes of the EDAC_DEVICE ECC object */
-static struct attribute *device_ctrl_attr[] = {
+static struct attribute *device_ctrl_attrs[] = {
 	&attr_ctl_info_panic_on_ue.attr,
 	&attr_ctl_info_log_ue.attr,
 	&attr_ctl_info_log_ce.attr,
 	&attr_ctl_info_poll_msec.attr,
 	NULL,
 };
+ATTRIBUTE_GROUPS(device_ctrl);
 
 /*
  * edac_device_ctrl_master_release
@@ -217,7 +218,7 @@ static void edac_device_ctrl_master_release(struct kobject *kobj)
 static struct kobj_type ktype_device_ctrl = {
 	.release = edac_device_ctrl_master_release,
 	.sysfs_ops = &device_ctl_info_ops,
-	.default_attrs = device_ctrl_attr,
+	.default_groups = device_ctrl_groups,
 };
 
 /*
@@ -389,17 +390,18 @@ INSTANCE_ATTR(ce_count, S_IRUGO, instance_ce_count_show, NULL);
 INSTANCE_ATTR(ue_count, S_IRUGO, instance_ue_count_show, NULL);
 
 /* list of edac_dev 'instance' attributes */
-static struct attribute *device_instance_attr[] = {
+static struct attribute *device_instance_attrs[] = {
 	&attr_instance_ce_count.attr,
 	&attr_instance_ue_count.attr,
 	NULL,
 };
+ATTRIBUTE_GROUPS(device_instance);
 
 /* The 'ktype' for each edac_dev 'instance' */
 static struct kobj_type ktype_instance_ctrl = {
 	.release = edac_device_ctrl_instance_release,
 	.sysfs_ops = &device_instance_ops,
-	.default_attrs = device_instance_attr,
+	.default_groups = device_instance_groups,
 };
 
 /* edac_dev -> instance -> block information */
@@ -487,17 +489,18 @@ BLOCK_ATTR(ce_count, S_IRUGO, block_ce_count_show, NULL);
 BLOCK_ATTR(ue_count, S_IRUGO, block_ue_count_show, NULL);
 
 /* list of edac_dev 'block' attributes */
-static struct attribute *device_block_attr[] = {
+static struct attribute *device_block_attrs[] = {
 	&attr_block_ce_count.attr,
 	&attr_block_ue_count.attr,
 	NULL,
 };
+ATTRIBUTE_GROUPS(device_block);
 
 /* The 'ktype' for each edac_dev 'block' */
 static struct kobj_type ktype_block_ctrl = {
 	.release = edac_device_ctrl_block_release,
 	.sysfs_ops = &device_block_ops,
-	.default_attrs = device_block_attr,
+	.default_groups = device_block_groups,
 };
 
 /* block ctor/dtor  code */
-- 
2.34.1

Re: [PATCH 1/2] EDAC: use proper list of struct attribute for attributes

[Greg Kroah-Hartman]

On Tue, Jan 04, 2022 at 11:38:21AM +0100, Greg Kroah-Hartman wrote:
> The edac sysfs code is doing some crazy casting of the list of
> attributes that is not necessary at all.  Instead, properly point to the
> correct attribute structure in the lists, which removes the need to cast
> anything and the code is now properly typesafe (as much as sysfs
> attribute logic is typesafe...)
> 
> Cc: Borislav Petkov <bp@alien8.de>
> Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
> Cc: Tony Luck <tony.luck@intel.com>
> Cc: James Morse <james.morse@arm.com>
> Cc: Robert Richter <rric@kernel.org>
> Cc: linux-edac@vger.kernel.org
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> ---
>  drivers/edac/edac_device_sysfs.c | 28 ++++++++++++++--------------
>  1 file changed, 14 insertions(+), 14 deletions(-)

Ick, I forgot the other users like edac_pci_sysfs.c that also has this
issue, so let me go fix up this series to include that at the same time.
Sorry for the noise here...

thanks,

greg k-h