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path: root/drivers/cxl/core/mbox.c
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Diffstat (limited to 'drivers/cxl/core/mbox.c')
-rw-r--r--drivers/cxl/core/mbox.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c
index 54f434733b56..cbf23beebebe 100644
--- a/drivers/cxl/core/mbox.c
+++ b/drivers/cxl/core/mbox.c
@@ -355,11 +355,13 @@ static int cxl_to_mem_cmd(struct cxl_mem_command *mem_cmd,
return -EBUSY;
/* Check the input buffer is the expected size */
- if (info->size_in != send_cmd->in.size)
+ if ((info->size_in != CXL_VARIABLE_PAYLOAD) &&
+ (info->size_in != send_cmd->in.size))
return -ENOMEM;
/* Check the output buffer is at least large enough */
- if (send_cmd->out.size < info->size_out)
+ if ((info->size_out != CXL_VARIABLE_PAYLOAD) &&
+ (send_cmd->out.size < info->size_out))
return -ENOMEM;
*mem_cmd = (struct cxl_mem_command) {