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authorRicardo B. Marliere <ricardo@marliere.net>2024-02-19 08:46:56 -0300
committerVinod Koul <vkoul@kernel.org>2024-02-22 19:29:31 +0530
commit1e0a2852a134833f6827de15cd62ea0ed19f1b60 (patch)
tree971179e917360dcc25cf26b68a74e89ec19a48ca /drivers/dma
parent35b78e2eef2d75c8722bf39d6bd1d89a8e21479e (diff)
dmaengine: idxd: constify the struct device_type usage
Since commit aed65af1cc2f ("drivers: make device_type const"), the driver core can properly handle constant struct device_type. Move the dsa_device_type, iax_device_type, idxd_wq_device_type, idxd_cdev_file_type, idxd_cdev_device_type and idxd_group_device_type variables to be constant structures as well, placing it into read-only memory which can not be modified at runtime. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: "Ricardo B. Marliere" <ricardo@marliere.net> Reviewed-by: Fenghua Yu <fenghua.yu@intel.com> Link: https://lore.kernel.org/r/20240219-device_cleanup-dmaengine-v1-1-9f72f3cf3587@marliere.net Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/idxd/cdev.c4
-rw-r--r--drivers/dma/idxd/idxd.h12
-rw-r--r--drivers/dma/idxd/sysfs.c10
3 files changed, 13 insertions, 13 deletions
diff --git a/drivers/dma/idxd/cdev.c b/drivers/dma/idxd/cdev.c
index 77f8885cf407..72bb982d7af7 100644
--- a/drivers/dma/idxd/cdev.c
+++ b/drivers/dma/idxd/cdev.c
@@ -152,7 +152,7 @@ static void idxd_file_dev_release(struct device *dev)
mutex_unlock(&wq->wq_lock);
}
-static struct device_type idxd_cdev_file_type = {
+static const struct device_type idxd_cdev_file_type = {
.name = "idxd_file",
.release = idxd_file_dev_release,
.groups = cdev_file_attribute_groups,
@@ -169,7 +169,7 @@ static void idxd_cdev_dev_release(struct device *dev)
kfree(idxd_cdev);
}
-static struct device_type idxd_cdev_device_type = {
+static const struct device_type idxd_cdev_device_type = {
.name = "idxd_cdev",
.release = idxd_cdev_dev_release,
};
diff --git a/drivers/dma/idxd/idxd.h b/drivers/dma/idxd/idxd.h
index f14a660a2a34..d8d3611bf79a 100644
--- a/drivers/dma/idxd/idxd.h
+++ b/drivers/dma/idxd/idxd.h
@@ -282,7 +282,7 @@ typedef int (*load_device_defaults_fn_t) (struct idxd_device *idxd);
struct idxd_driver_data {
const char *name_prefix;
enum idxd_type type;
- struct device_type *dev_type;
+ const struct device_type *dev_type;
int compl_size;
int align;
int evl_cr_off;
@@ -520,11 +520,11 @@ extern const struct bus_type dsa_bus_type;
extern bool support_enqcmd;
extern struct ida idxd_ida;
-extern struct device_type dsa_device_type;
-extern struct device_type iax_device_type;
-extern struct device_type idxd_wq_device_type;
-extern struct device_type idxd_engine_device_type;
-extern struct device_type idxd_group_device_type;
+extern const struct device_type dsa_device_type;
+extern const struct device_type iax_device_type;
+extern const struct device_type idxd_wq_device_type;
+extern const struct device_type idxd_engine_device_type;
+extern const struct device_type idxd_group_device_type;
static inline bool is_dsa_dev(struct idxd_dev *idxd_dev)
{
diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
index 523ae0dff7d4..7f28f01be672 100644
--- a/drivers/dma/idxd/sysfs.c
+++ b/drivers/dma/idxd/sysfs.c
@@ -91,7 +91,7 @@ static void idxd_conf_engine_release(struct device *dev)
kfree(engine);
}
-struct device_type idxd_engine_device_type = {
+const struct device_type idxd_engine_device_type = {
.name = "engine",
.release = idxd_conf_engine_release,
.groups = idxd_engine_attribute_groups,
@@ -577,7 +577,7 @@ static void idxd_conf_group_release(struct device *dev)
kfree(group);
}
-struct device_type idxd_group_device_type = {
+const struct device_type idxd_group_device_type = {
.name = "group",
.release = idxd_conf_group_release,
.groups = idxd_group_attribute_groups,
@@ -1369,7 +1369,7 @@ static void idxd_conf_wq_release(struct device *dev)
kfree(wq);
}
-struct device_type idxd_wq_device_type = {
+const struct device_type idxd_wq_device_type = {
.name = "wq",
.release = idxd_conf_wq_release,
.groups = idxd_wq_attribute_groups,
@@ -1798,13 +1798,13 @@ static void idxd_conf_device_release(struct device *dev)
kfree(idxd);
}
-struct device_type dsa_device_type = {
+const struct device_type dsa_device_type = {
.name = "dsa",
.release = idxd_conf_device_release,
.groups = idxd_attribute_groups,
};
-struct device_type iax_device_type = {
+const struct device_type iax_device_type = {
.name = "iax",
.release = idxd_conf_device_release,
.groups = idxd_attribute_groups,