Disable warning about volatile variables. They are oftne needed in embedded code

checkpatch.pl

@@ -3021,35 +3021,6 @@ sub process {
 			}
 		}
 
-# check for using SPDX license tag at beginning of files
-		if ($realline == $checklicenseline) {
-			if ($rawline =~ /^[ \+]\s*\#\!\s*\//) {
-				$checklicenseline = 2;
-			} elsif ($rawline =~ /^\+/) {
-				my $comment = "";
-				if ($realfile =~ /\.(h|s|S)$/) {
-					$comment = '/*';
-				} elsif ($realfile =~ /\.(c|dts|dtsi)$/) {
-					$comment = '//';
-				} elsif (($checklicenseline == 2) || $realfile =~ /\.(sh|pl|py|awk|tc)$/) {
-					$comment = '#';
-				} elsif ($realfile =~ /\.rst$/) {
-					$comment = '..';
-				}
-
-				if ($comment !~ /^$/ &&
-				    $rawline !~ /^\+\Q$comment\E SPDX-License-Identifier: /) {
-					 WARN("SPDX_LICENSE_TAG",
-					      "Missing or malformed SPDX-License-Identifier tag in line $checklicenseline\n" . $herecurr);
-				} elsif ($rawline =~ /(SPDX-License-Identifier: .*)/) {
-					 my $spdx_license = $1;
-					 if (!is_SPDX_License_valid($spdx_license)) {
-						  WARN("SPDX_LICENSE_TAG",
-						       "'$spdx_license' is not supported in LICENSES/...\n" . $herecurr);
-					 }
-				}
-			}
-		}
 
 # check we are in a valid source file if not then ignore this hunk
 		next if ($realfile !~ /\.(h|c|s|S|sh|dtsi|dts)$/);
@@ -3849,15 +3820,6 @@ sub process {
 				$fixed[$fixlinenr] =~ s/(^.$Type\s*$Ident(?:\s+$Modifier)*)\s*=\s*$zero_initializer\s*;/$1;/;
 			}
 		}
-# check for static initialisers.
-		if ($line =~ /^\+.*\bstatic\s.*=\s*($zero_initializer)\s*;/) {
-			if (ERROR("INITIALISED_STATIC",
-				  "do not initialise statics to $1\n" .
-				      $herecurr) &&
-			    $fix) {
-				$fixed[$fixlinenr] =~ s/(\bstatic\s.*?)\s*=\s*$zero_initializer\s*;/$1;/;
-			}
-		}
 
 # check for misordered declarations of char/short/int/long with signed/unsigned
 		while ($sline =~ m{(\b$TypeMisordered\b)}g) {
@@ -5367,10 +5329,10 @@ sub process {
 
 # no volatiles please
 		my $asm_volatile = qr{\b(__asm__|asm)\s+(__volatile__|volatile)\b};
-		if ($line =~ /\bvolatile\b/ && $line !~ /$asm_volatile/) {
-			WARN("VOLATILE",
-			     "Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst\n" . $herecurr);
-		}
+		#if ($line =~ /\bvolatile\b/ && $line !~ /$asm_volatile/) {
+		#	WARN("VOLATILE",
+		#	     "Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst\n" . $herecurr);
+		#}
 
 # Check for user-visible strings broken across lines, which breaks the ability
 # to grep for the string.  Make exceptions when the previous string ends in a

const_structs.checkpatch

@@ -0,0 +1 @@
+__unused__dummy_struct__