[jcmvbkbc-xtensa:xtensa-6.6-rc6-esp32 35/43] checkpatch: WARNING: Missing or malformed SPDX-License-Identifier tag in line 1

[jcmvbkbc-xtensa:xtensa-6.6-rc6-esp32 35/43] checkpatch: WARNING: Missing or malformed SPDX-License-Identifier tag in line 1

[kernel test robot]

tree:   https://github.com/jcmvbkbc/linux-xtensa xtensa-6.6-rc6-esp32
head:   7b60fbaf629519456a4de1b76bf9edfb331ffb50
commit: 2003dcbbb2cbe970e845e24fe570ff1d0b5eff49 [35/43] xtensa: add TRAX support
reproduce: (https://download.01.org/0day-ci/archive/20231021/202310210847.TcKu8ocW-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202310210847.TcKu8ocW-lkp@intel.com/

# many are suggestions rather than must-fix

WARNING:SPDX_LICENSE_TAG: Missing or malformed SPDX-License-Identifier tag in line 1
#47: FILE: arch/xtensa/include/asm/trax.h:1:
+#ifndef _XTENSA_TRAX_H

WARNING:SPDX_LICENSE_TAG: Missing or malformed SPDX-License-Identifier tag in line 1
#94: FILE: arch/xtensa/kernel/trax.c:1:
+#include <linux/errno.h>

ERROR:SPACING: spaces required around that '>' (ctx:OxW)
#205: FILE: arch/xtensa/kernel/trax.c:112:
+		for (i = 100; i --> 0; ) {
 		                  ^

WARNING:IF_0: Consider removing the code enclosed by this #if 0 and its #endif
#360: FILE: arch/xtensa/kernel/trax.c:267:
+#if 0

WARNING:BRACES: braces {} are not necessary for single statement blocks
#551: FILE: arch/xtensa/kernel/trax.c:458:
+		if (j % 8 && n - i > 8 - j % 8) {
+			b |= ctx->packet_buffer[j / 8 + 1] << (8 - j % 8);
+		}

WARNING:UNNECESSARY_ELSE: else is not generally useful after a break or return
#602: FILE: arch/xtensa/kernel/trax.c:509:
+		return false;
+	} else {

WARNING:SUSPECT_CODE_INDENT: suspect code indent for conditional statements (8, 12)
#602: FILE: arch/xtensa/kernel/trax.c:509:
+	} else {
+	    if (ctx->msg_packet < trax_decode[ctx->msg.type].max_packets &&

WARNING:TABSTOP: Statements should start on a tabstop
#603: FILE: arch/xtensa/kernel/trax.c:510:
+	    if (ctx->msg_packet < trax_decode[ctx->msg.type].max_packets &&

WARNING:SUSPECT_CODE_INDENT: suspect code indent for conditional statements (12, 20)
#603: FILE: arch/xtensa/kernel/trax.c:510:
+	    if (ctx->msg_packet < trax_decode[ctx->msg.type].max_packets &&
[...]
+		    ++ctx->msg_packet;

WARNING:TABSTOP: Statements should start on a tabstop
#606: FILE: arch/xtensa/kernel/trax.c:513:
+		    return true;

WARNING:TABSTOP: Statements should start on a tabstop
#607: FILE: arch/xtensa/kernel/trax.c:514:
+	    } else {

WARNING:SUSPECT_CODE_INDENT: suspect code indent for conditional statements (12, 20)
#607: FILE: arch/xtensa/kernel/trax.c:514:
+	    } else {
+		    ctx->msg.type = TRAX_MSG_TYPE_UNDEF;

WARNING:TABSTOP: Statements should start on a tabstop
#610: FILE: arch/xtensa/kernel/trax.c:517:
+		    return false;

WARNING:TABSTOP: Statements should start on a tabstop
#611: FILE: arch/xtensa/kernel/trax.c:518:
+	    }

WARNING:BRACES: braces {} are not necessary for single statement blocks
#912: FILE: arch/xtensa/kernel/trax.c:819:
+	if (pde) {
+		proc_set_size(pde, trax_state.memsz * 4);
+	}

-- 
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https://github.com/intel/lkp-tests/wiki