objtool: Silence more KCOV warnings, part 2

commit 55c78035a1a8dfb05f1472018ce2a651701adb7d upstream.

Similar to GCOV, KCOV can leave behind dead code and undefined behavior.
Warnings related to those should be ignored.

The previous commit:

  6b023c784204 ("objtool: Silence more KCOV warnings")

... only did so for CONFIG_CGOV_KERNEL.  Also do it for CONFIG_KCOV, but
for real this time.

Fixes the following warning:

  vmlinux.o: warning: objtool: synaptics_report_mt_data: unexpected end of section .text.synaptics_report_mt_data

Fixes: 6b023c784204 ("objtool: Silence more KCOV warnings")
Reported-by: kernel test robot <[email protected]>
Signed-off-by: Josh Poimboeuf <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: https://lore.kernel.org/r/a44ba16e194bcbc52c1cef3d3cd9051a62622723.1743481539.git.jpoimboe@kernel.org
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: jpoimboe

scripts/Makefile.lib

@@ -263,7 +263,7 @@ objtool-args-$(CONFIG_SLS)				+= --sls
 objtool-args-$(CONFIG_STACK_VALIDATION)			+= --stackval
 objtool-args-$(CONFIG_HAVE_STATIC_CALL_INLINE)		+= --static-call
 objtool-args-$(CONFIG_HAVE_UACCESS_VALIDATION)		+= --uaccess
-objtool-args-$(CONFIG_GCOV_KERNEL)			+= --no-unreachable
+objtool-args-$(or $(CONFIG_GCOV_KERNEL),$(CONFIG_KCOV))	+= --no-unreachable
 
 objtool-args = $(objtool-args-y)					\
 	$(if $(delay-objtool), --link)					\