'f-strings' without any placeholders don't need to be marked as such
according to Ruff. This 'f' can be safely removed.

This is linked to Ruff error F541 [1]:

  f-strings are a convenient way to format strings, but they are not
  necessary if there are no placeholder expressions to format. In this
  case, a regular string should be used instead, as an f-string without
  placeholders can be confusing for readers, who may expect such a
  placeholder to be present.

Link: https://docs.astral.sh/ruff/rules/f-string-missing-placeholders/ [1]
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
---
 tools/net/ynl/pyynl/ethtool.py   | 10 +++++-----
 tools/net/ynl/pyynl/ynl_gen_c.py | 22 +++++++++++-----------
 2 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/tools/net/ynl/pyynl/ethtool.py b/tools/net/ynl/pyynl/ethtool.py
index ef2cbad41f9bdd4e22c1be956326417c9ee23109..c1cd088c050cd52ee379ed4682fff856b9b3b3be 100755
--- a/tools/net/ynl/pyynl/ethtool.py
+++ b/tools/net/ynl/pyynl/ethtool.py
@@ -254,14 +254,14 @@ def main():
         reply = dumpit(ynl, args, 'channels-get')
         print(f'Channel parameters for {args.device}:')
 
-        print(f'Pre-set maximums:')
+        print('Pre-set maximums:')
         print_field(reply,
             ('rx-max', 'RX'),
             ('tx-max', 'TX'),
             ('other-max', 'Other'),
             ('combined-max', 'Combined'))
 
-        print(f'Current hardware settings:')
+        print('Current hardware settings:')
         print_field(reply,
             ('rx-count', 'RX'),
             ('tx-count', 'TX'),
@@ -275,14 +275,14 @@ def main():
 
         print(f'Ring parameters for {args.device}:')
 
-        print(f'Pre-set maximums:')
+        print('Pre-set maximums:')
         print_field(reply,
             ('rx-max', 'RX'),
             ('rx-mini-max', 'RX Mini'),
             ('rx-jumbo-max', 'RX Jumbo'),
             ('tx-max', 'TX'))
 
-        print(f'Current hardware settings:')
+        print('Current hardware settings:')
         print_field(reply,
             ('rx', 'RX'),
             ('rx-mini', 'RX Mini'),
@@ -297,7 +297,7 @@ def main():
         return
 
     if args.statistics:
-        print(f'NIC statistics:')
+        print('NIC statistics:')
 
         # TODO: pass id?
         strset = dumpit(ynl, args, 'strset-get')
diff --git a/tools/net/ynl/pyynl/ynl_gen_c.py b/tools/net/ynl/pyynl/ynl_gen_c.py
index 957fae8e27ede6fcd51fb2a98d356a6d67d0352e..8e95c5bb139921f38f374d2c652844c7f4e96a9b 100755
--- a/tools/net/ynl/pyynl/ynl_gen_c.py
+++ b/tools/net/ynl/pyynl/ynl_gen_c.py
@@ -485,7 +485,7 @@ class TypeString(Type):
         ri.cw.p(f"char *{self.c_name};")
 
     def _attr_typol(self):
-        typol = f'.type = YNL_PT_NUL_STR, '
+        typol = '.type = YNL_PT_NUL_STR, '
         if self.is_selector:
             typol += '.is_selector = 1, '
         return typol
@@ -539,7 +539,7 @@ class TypeBinary(Type):
         ri.cw.p(f"void *{self.c_name};")
 
     def _attr_typol(self):
-        return f'.type = YNL_PT_BINARY,'
+        return '.type = YNL_PT_BINARY,'
 
     def _attr_policy(self, policy):
         if len(self.checks) == 0:
@@ -636,7 +636,7 @@ class TypeBitfield32(Type):
         return "struct nla_bitfield32"
 
     def _attr_typol(self):
-        return f'.type = YNL_PT_BITFIELD32, '
+        return '.type = YNL_PT_BITFIELD32, '
 
     def _attr_policy(self, policy):
         if not 'enum' in self.attr:
@@ -909,7 +909,7 @@ class TypeSubMessage(TypeNest):
         else:
             sel_var = f"{var}->{sel}"
         get_lines = [f'if (!{sel_var})',
-                     f'return ynl_submsg_failed(yarg, "%s", "%s");' %
+                     'return ynl_submsg_failed(yarg, "%s", "%s");' %
                         (self.name, self['selector']),
                     f"if ({self.nested_render_name}_parse(&parg, {sel_var}, attr))",
                      "return YNL_PARSE_CB_ERROR;"]
@@ -1563,7 +1563,7 @@ class RenderInfo:
                 if family.is_classic():
                     self.fixed_hdr_len = f"sizeof(struct {c_lower(fixed_hdr)})"
                 else:
-                    raise Exception(f"Per-op fixed header not supported, yet")
+                    raise Exception("Per-op fixed header not supported, yet")
 
 
         # 'do' and 'dump' response parsing is identical
@@ -2099,7 +2099,7 @@ def _multi_parse(ri, struct, init_lines, local_vars):
             if ri.family.is_classic():
                 iter_line = f"ynl_attr_for_each(attr, nlh, sizeof({struct.fixed_header}))"
             else:
-                raise Exception(f"Per-op fixed header not supported, yet")
+                raise Exception("Per-op fixed header not supported, yet")
 
     array_nests = set()
     multi_attrs = set()
@@ -2502,7 +2502,7 @@ def print_free_prototype(ri, direction, suffix=';'):
 
 def print_nlflags_set(ri, direction):
     name = op_prefix(ri, direction)
-    ri.cw.write_func_prot(f'static inline void', f"{name}_set_nlflags",
+    ri.cw.write_func_prot('static inline void', f"{name}_set_nlflags",
                           [f"struct {name} *req", "__u16 nl_flags"])
     ri.cw.block_start()
     ri.cw.p('req->_nlmsg_flags = nl_flags;')
@@ -2533,7 +2533,7 @@ def _print_type(ri, direction, struct):
             line = attr.presence_member(ri.ku_space, type_filter)
             if line:
                 if not meta_started:
-                    ri.cw.block_start(line=f"struct")
+                    ri.cw.block_start(line="struct")
                     meta_started = True
                 ri.cw.p(line)
         if meta_started:
@@ -2697,7 +2697,7 @@ def print_dump_type_free(ri):
     ri.cw.nl()
 
     _free_type_members(ri, 'rsp', ri.struct['reply'], ref='obj.')
-    ri.cw.p(f'free(rsp);')
+    ri.cw.p('free(rsp);')
     ri.cw.block_end()
     ri.cw.block_end()
     ri.cw.nl()
@@ -2708,7 +2708,7 @@ def print_ntf_type_free(ri):
     ri.cw.block_start()
     _free_type_members_iter(ri, ri.struct['reply'])
     _free_type_members(ri, 'rsp', ri.struct['reply'], ref='obj.')
-    ri.cw.p(f'free(rsp);')
+    ri.cw.p('free(rsp);')
     ri.cw.block_end()
     ri.cw.nl()
 
@@ -3322,7 +3322,7 @@ def render_user_family(family, cw, prototype):
     cw.block_start(f'{symbol} = ')
     cw.p(f'.name\t\t= "{family.c_name}",')
     if family.is_classic():
-        cw.p(f'.is_classic\t= true,')
+        cw.p('.is_classic\t= true,')
         cw.p(f'.classic_id\t= {family.get("protonum")},')
     if family.is_classic():
         if family.fixed_header:

-- 
2.51.0