bus: fsl-mc: Remove deadcode

fsl_mc_allocator_driver_exit() was added explicitly by
commit 1e8ac83 ("bus: fsl-mc: add fsl_mc_allocator cleanup function")
but was never used.

Remove it.

fsl_mc_portal_reset() was added in 2015 by
commit 197f4d6 ("staging: fsl-mc: fsl-mc object allocator driver")
but was never used.

Remove it.

fsl_mc_portal_reset() was the only caller of dpmcp_reset().

Remove it.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Acked-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Acked-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20241115152055.279732-1-linux@treblig.org
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>

Author: Dr. David Alan Gilbert

drivers/bus/fsl-mc/dpmcp.c

@@ -75,25 +75,3 @@ int dpmcp_close(struct fsl_mc_io *mc_io,
 	/* send command to mc*/
 	return mc_send_command(mc_io, &cmd);
 }
-
-/**
- * dpmcp_reset() - Reset the DPMCP, returns the object to initial state.
- * @mc_io:	Pointer to MC portal's I/O object
- * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
- * @token:	Token of DPMCP object
- *
- * Return:	'0' on Success; Error code otherwise.
- */
-int dpmcp_reset(struct fsl_mc_io *mc_io,
-		u32 cmd_flags,
-		u16 token)
-{
-	struct fsl_mc_command cmd = { 0 };
-
-	/* prepare command */
-	cmd.header = mc_encode_cmd_header(DPMCP_CMDID_RESET,
-					  cmd_flags, token);
-
-	/* send command to mc*/
-	return mc_send_command(mc_io, &cmd);
-}

drivers/bus/fsl-mc/fsl-mc-allocator.c

@@ -656,8 +656,3 @@ int __init fsl_mc_allocator_driver_init(void)
 {
 	return fsl_mc_driver_register(&fsl_mc_allocator_driver);
 }
-
-void fsl_mc_allocator_driver_exit(void)
-{
-	fsl_mc_driver_unregister(&fsl_mc_allocator_driver);
-}

drivers/bus/fsl-mc/fsl-mc-private.h

@@ -66,10 +66,6 @@ int dpmcp_close(struct fsl_mc_io *mc_io,
 		u32 cmd_flags,
 		u16 token);
 
-int dpmcp_reset(struct fsl_mc_io *mc_io,
-		u32 cmd_flags,
-		u16 token);
-
 /*
  * Data Path Resource Container (DPRC) API
  */
@@ -631,8 +627,6 @@ int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev,
 
 int __init fsl_mc_allocator_driver_init(void);
 
-void fsl_mc_allocator_driver_exit(void);
-
 void fsl_mc_init_all_resource_pools(struct fsl_mc_device *mc_bus_dev);
 
 void fsl_mc_cleanup_all_resource_pools(struct fsl_mc_device *mc_bus_dev);

drivers/bus/fsl-mc/mc-io.c

@@ -263,23 +263,3 @@ void fsl_mc_portal_free(struct fsl_mc_io *mc_io)
 	dpmcp_dev->consumer_link = NULL;
 }
 EXPORT_SYMBOL_GPL(fsl_mc_portal_free);
-
-/**
- * fsl_mc_portal_reset - Resets the dpmcp object for a given fsl_mc_io object
- *
- * @mc_io: Pointer to the fsl_mc_io object that wraps the MC portal to free
- */
-int fsl_mc_portal_reset(struct fsl_mc_io *mc_io)
-{
-	int error;
-	struct fsl_mc_device *dpmcp_dev = mc_io->dpmcp_dev;
-
-	error = dpmcp_reset(mc_io, 0, dpmcp_dev->mc_handle);
-	if (error < 0) {
-		dev_err(&dpmcp_dev->dev, "dpmcp_reset() failed: %d\n", error);
-		return error;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(fsl_mc_portal_reset);

include/linux/fsl/mc.h

@@ -417,8 +417,6 @@ int __must_check fsl_mc_portal_allocate(struct fsl_mc_device *mc_dev,
 
 void fsl_mc_portal_free(struct fsl_mc_io *mc_io);
 
-int fsl_mc_portal_reset(struct fsl_mc_io *mc_io);
-
 int __must_check fsl_mc_object_allocate(struct fsl_mc_device *mc_dev,
 					enum fsl_mc_pool_type pool_type,
 					struct fsl_mc_device **new_mc_adev);