diff mbox series

[v4,13/21] cxl/mbox: Convert 'enabled_cmds' to DECLARE_BITMAP

Message ID 163116436415.2460985.10101824045493194813.stgit@dwillia2-desk3.amr.corp.intel.com
State New, archived
Headers show
Series cxl_test: Enable CXL Topology and UAPI regression tests | expand

Commit Message

Dan Williams Sept. 9, 2021, 5:12 a.m. UTC 
Define enabled_cmds as an embedded member of 'struct cxl_mem' rather
than a pointer to another dynamic allocation.

As this leaves only one user of cxl_cmd_count, just open code it and
delete the helper.

Acked-by: Ben Widawsky <ben.widawsky@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
 drivers/cxl/core/mbox.c |   12 +-----------
 drivers/cxl/cxlmem.h    |    2 +-
 2 files changed, 2 insertions(+), 12 deletions(-)
diff mbox series

Patch

diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c
index 31e183991726..422999740649 100644
--- a/drivers/cxl/core/mbox.c
+++ b/drivers/cxl/core/mbox.c
@@ -315,8 +315,6 @@  static int cxl_validate_cmd_from_user(struct cxl_mem *cxlm,
 	return 0;
 }
 
-#define cxl_cmd_count ARRAY_SIZE(cxl_mem_commands)
-
 int cxl_query_cmd(struct cxl_memdev *cxlmd,
 		  struct cxl_mem_query_commands __user *q)
 {
@@ -332,7 +330,7 @@  int cxl_query_cmd(struct cxl_memdev *cxlmd,
 
 	/* returns the total number if 0 elements are requested. */
 	if (n_commands == 0)
-		return put_user(cxl_cmd_count, &q->n_commands);
+		return put_user(ARRAY_SIZE(cxl_mem_commands), &q->n_commands);
 
 	/*
 	 * otherwise, return max(n_commands, total commands) cxl_command_info
@@ -794,14 +792,6 @@  struct cxl_mem *cxl_mem_create(struct device *dev)
 
 	mutex_init(&cxlm->mbox_mutex);
 	cxlm->dev = dev;
-	cxlm->enabled_cmds =
-		devm_kmalloc_array(dev, BITS_TO_LONGS(cxl_cmd_count),
-				   sizeof(unsigned long),
-				   GFP_KERNEL | __GFP_ZERO);
-	if (!cxlm->enabled_cmds) {
-		dev_err(dev, "No memory available for bitmap\n");
-		return ERR_PTR(-ENOMEM);
-	}
 
 	return cxlm;
 }
diff --git a/drivers/cxl/cxlmem.h b/drivers/cxl/cxlmem.h
index 35fd16d12532..16201b7d82d2 100644
--- a/drivers/cxl/cxlmem.h
+++ b/drivers/cxl/cxlmem.h
@@ -126,7 +126,7 @@  struct cxl_mem {
 	size_t lsa_size;
 	struct mutex mbox_mutex; /* Protects device mailbox and firmware */
 	char firmware_version[0x10];
-	unsigned long *enabled_cmds;
+	DECLARE_BITMAP(enabled_cmds, CXL_MEM_COMMAND_ID_MAX);
 
 	struct range pmem_range;
 	struct range ram_range;