Fix "warning: regexp escape sequence is not a known regexp operator" on
gawk 5.0.0.

Results found by:

- grepping '\\[^\[\\^$.|?*+()a-z]' on *.awk
- grepping 'awk.*\\[^\[\\^$.|?*+()a-z]'
- running awk --lint -f </dev/null >/dev/null on *.awk

Signed-off-by: Alex Xu (Hello71) <alex_y...@yahoo.ca>
---
 Documentation/arm/Samsung/clksrc-change-registers.awk  | 2 +-
 arch/x86/tools/gen-insn-attr-x86.awk                   | 4 ++--
 lib/raid6/unroll.awk                                   | 2 +-
 tools/objtool/arch/x86/tools/gen-insn-attr-x86.awk     | 4 ++--
 tools/perf/arch/x86/tests/gen-insn-x86-dat.awk         | 2 +-
 tools/perf/util/intel-pt-decoder/gen-insn-attr-x86.awk | 4 ++--
 6 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/Documentation/arm/Samsung/clksrc-change-registers.awk 
b/Documentation/arm/Samsung/clksrc-change-registers.awk
index 7be1b8aa7cd9..d853f750c861 100755
--- a/Documentation/arm/Samsung/clksrc-change-registers.awk
+++ b/Documentation/arm/Samsung/clksrc-change-registers.awk
@@ -67,7 +67,7 @@ BEGIN {
 # to replace and create an associative array of values
 
     while (getline line < ARGV[1] > 0) {
-       if (line ~ /\#define.*_MASK/ &&
+       if (line ~ /#define.*_MASK/ &&
            !(line ~ /USB_SIG_MASK/)) {
            splitdefine(line, fields)
            name = fields[0]
diff --git a/arch/x86/tools/gen-insn-attr-x86.awk 
b/arch/x86/tools/gen-insn-attr-x86.awk
index b02a36b2c14f..a42015b305f4 100644
--- a/arch/x86/tools/gen-insn-attr-x86.awk
+++ b/arch/x86/tools/gen-insn-attr-x86.awk
@@ -69,7 +69,7 @@ BEGIN {
 
        lprefix1_expr = "\\((66|!F3)\\)"
        lprefix2_expr = "\\(F3\\)"
-       lprefix3_expr = "\\((F2|!F3|66\\&F2)\\)"
+       lprefix3_expr = "\\((F2|!F3|66&F2)\\)"
        lprefix_expr = "\\((66|F2|F3)\\)"
        max_lprefix = 4
 
@@ -257,7 +257,7 @@ function convert_operands(count,opnd,       i,j,imm,mod)
        return add_flags(imm, mod)
 }
 
-/^[0-9a-f]+\:/ {
+/^[0-9a-f]+:/ {
        if (NR == 1)
                next
        # get index
diff --git a/lib/raid6/unroll.awk b/lib/raid6/unroll.awk
index c6aa03631df8..0809805a7e23 100644
--- a/lib/raid6/unroll.awk
+++ b/lib/raid6/unroll.awk
@@ -13,7 +13,7 @@ BEGIN {
        for (i = 0; i < rep; ++i) {
                tmp = $0
                gsub(/\$\$/, i, tmp)
-               gsub(/\$\#/, n, tmp)
+               gsub(/\$#/, n, tmp)
                gsub(/\$\*/, "$", tmp)
                print tmp
        }
diff --git a/tools/objtool/arch/x86/tools/gen-insn-attr-x86.awk 
b/tools/objtool/arch/x86/tools/gen-insn-attr-x86.awk
index b02a36b2c14f..a42015b305f4 100644
--- a/tools/objtool/arch/x86/tools/gen-insn-attr-x86.awk
+++ b/tools/objtool/arch/x86/tools/gen-insn-attr-x86.awk
@@ -69,7 +69,7 @@ BEGIN {
 
        lprefix1_expr = "\\((66|!F3)\\)"
        lprefix2_expr = "\\(F3\\)"
-       lprefix3_expr = "\\((F2|!F3|66\\&F2)\\)"
+       lprefix3_expr = "\\((F2|!F3|66&F2)\\)"
        lprefix_expr = "\\((66|F2|F3)\\)"
        max_lprefix = 4
 
@@ -257,7 +257,7 @@ function convert_operands(count,opnd,       i,j,imm,mod)
        return add_flags(imm, mod)
 }
 
-/^[0-9a-f]+\:/ {
+/^[0-9a-f]+:/ {
        if (NR == 1)
                next
        # get index
diff --git a/tools/perf/arch/x86/tests/gen-insn-x86-dat.awk 
b/tools/perf/arch/x86/tests/gen-insn-x86-dat.awk
index a21454835cd4..27585d032ee6 100644
--- a/tools/perf/arch/x86/tests/gen-insn-x86-dat.awk
+++ b/tools/perf/arch/x86/tests/gen-insn-x86-dat.awk
@@ -31,7 +31,7 @@ BEGIN {
        going = 0
 }
 
-/^\s*[0-9a-fA-F]+\:/ {
+/^\s*[0-9a-fA-F]+:/ {
        if (going) {
                colon_pos = index($0, ":")
                useful_line = substr($0, colon_pos + 1)
diff --git a/tools/perf/util/intel-pt-decoder/gen-insn-attr-x86.awk 
b/tools/perf/util/intel-pt-decoder/gen-insn-attr-x86.awk
index ddd5c4c21129..606ccd154392 100644
--- a/tools/perf/util/intel-pt-decoder/gen-insn-attr-x86.awk
+++ b/tools/perf/util/intel-pt-decoder/gen-insn-attr-x86.awk
@@ -69,7 +69,7 @@ BEGIN {
 
        lprefix1_expr = "\\((66|!F3)\\)"
        lprefix2_expr = "\\(F3\\)"
-       lprefix3_expr = "\\((F2|!F3|66\\&F2)\\)"
+       lprefix3_expr = "\\((F2|!F3|66&F2)\\)"
        lprefix_expr = "\\((66|F2|F3)\\)"
        max_lprefix = 4
 
@@ -257,7 +257,7 @@ function convert_operands(count,opnd,       i,j,imm,mod)
        return add_flags(imm, mod)
 }
 
-/^[0-9a-f]+\:/ {
+/^[0-9a-f]+:/ {
        if (NR == 1)
                next
        # get index
-- 
2.21.0

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