vsprintf: remove redundant and unused %pCn format specifier

%pC and %pCn print the same string, and commit 900cca294425 ("lib/vsprintf:
add %pC{,n,r} format specifiers for clocks") introducing them does not
clarify any intended difference. It can be assumed %pC is a default for
%pCn as some other specifiers do, but not all are consistent with this
policy. Moreover there is now no other suffix other than 'n', which makes a
default not really useful.

All users in the kernel were using %pC except for one which has been
converted. So now remove %pCn and all the unnecessary extra code and
documentation.

Acked-by: Stephen Boyd <[email protected]>
Reviewed-by: Geert Uytterhoeven <[email protected]>
Signed-off-by: Luca Ceresoli <[email protected]>
Reviewed-by: Petr Mladek <[email protected]>
Tested-by: Petr Mladek <[email protected]>
Reviewed-by: Yanteng Si <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Daniel Lezcano <[email protected]>

1 files changed, 2 insertions, 8 deletions

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 01699852f30c..e40843cb807e 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1981,15 +1981,11 @@ char *clock(char *buf, char *end, struct clk *clk, struct printf_spec spec,
 	if (check_pointer(&buf, end, clk, spec))
 		return buf;
 
-	switch (fmt[1]) {
-	case 'n':
-	default:
 #ifdef CONFIG_COMMON_CLK
-		return string(buf, end, __clk_get_name(clk), spec);
+	return string(buf, end, __clk_get_name(clk), spec);
 #else
-		return ptr_to_id(buf, end, clk, spec);
+	return ptr_to_id(buf, end, clk, spec);
 #endif
-	}
 }
 
 static
@@ -2391,8 +2387,6 @@ early_param("no_hash_pointers", no_hash_pointers_enable);
  *      T    time64_t
  * - 'C' For a clock, it prints the name (Common Clock Framework) or address
  *       (legacy clock framework) of the clock
- * - 'Cn' For a clock, it prints the name (Common Clock Framework) or address
- *        (legacy clock framework) of the clock
  * - 'G' For flags to be printed as a collection of symbolic strings that would
  *       construct the specific value. Supported flags given by option:
  *       p page flags (see struct page) given as pointer to unsigned long