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cxl/mbox: Convert 'enabled_cmds' to DECLARE_BITMAP

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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>
Link: https://lore.kernel.org/r/163116436415.2460985.10101824045493194813.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2021-09-08 22:12:44 -07:00
parent 5a2328f4e8
commit ff56ab9e16
2 changed files with 2 additions and 12 deletions
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12
drivers/cxl/core/mbox.c
View File

@ -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;
}

2
drivers/cxl/cxlmem.h
View File

@ -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;