ERROR: trailing statements should be on next line
#45: FILE: drivers/fwctl/main.c:24:
+DEFINE_FREE(kvfree_errptr, void *, if (!IS_ERR_OR_NULL(_T)) kvfree(_T));

WARNING: Missing a blank line after declarations
#57: FILE: drivers/fwctl/main.c:87:
+	struct fwctl_rpc *cmd = ucmd->cmd;
+	void *outbuf __free(kvfree_errptr) = NULL;

CHECK: Lines should not end with a '('
#75: FILE: drivers/fwctl/main.c:105:
+			dev_warn(

WARNING: line length of 91 exceeds 80 columns
#177: FILE: include/uapi/fwctl/fwctl.h:91:
+	 * @FWCTL_RPC_DEBUG_WRITE: Writable access to lockdown compatible debug information

CHECK: Please use a blank line after function/struct/union/enum declarations
#220: FILE: include/uapi/fwctl/fwctl.h:134:
+};
+#define FWCTL_RPC _IO(FWCTL_TYPE, FWCTL_CMD_RPC)

total: 1 errors, 2 warnings, 2 checks, 181 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 626000bea15e ("fwctl: FWCTL_RPC to execute a Remote Procedure Call to device firmware") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.