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| author | Ricardo B. Marliere <ricardo@marliere.net> | 2024-02-19 08:46:56 -0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2024-02-22 19:29:31 +0530 |
| commit | 1e0a2852a134833f6827de15cd62ea0ed19f1b60 (patch) | |
| tree | 971179e917360dcc25cf26b68a74e89ec19a48ca /drivers/dma/idxd/idxd.h | |
| parent | 35b78e2eef2d75c8722bf39d6bd1d89a8e21479e (diff) | |
| download | lwn-1e0a2852a134833f6827de15cd62ea0ed19f1b60.tar.gz lwn-1e0a2852a134833f6827de15cd62ea0ed19f1b60.zip | |
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/idxd/idxd.h')
| -rw-r--r-- | drivers/dma/idxd/idxd.h | 12 |
1 files changed, 6 insertions, 6 deletions
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) { |