modpost: disallow *driver to reference .meminit* sections

[ Upstream commit 50cccec15c ]

Drivers must not reference .meminit* sections, which are discarded
when CONFIG_MEMORY_HOTPLUG=n.

The reason for whitelisting "*driver" in the section mismatch check
was to allow drivers to reference symbols annotated as __devinit or
__devexit that existed in the past.

Those annotations were removed by the following commits:

 - 54b956b903 ("Remove __dev* markings from init.h")
 - 92e9e6d1f9 ("modpost.c: Stop checking __dev* section mismatches")

Remove the stale whitelist.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Stable-dep-of: bb43a59944 ("Rename .data.unlikely to .data..unlikely")
Signed-off-by: Sasha Levin <sashal@kernel.org>

scripts/mod/modpost.c

@@ -1007,12 +1007,6 @@ static int secref_whitelist(const char *fromsec, const char *fromsym,
 				    "*_console")))
 		return 0;
 
-	/* symbols in data sections that may refer to meminit sections */
-	if (match(fromsec, PATTERNS(DATA_SECTIONS)) &&
-	    match(tosec, PATTERNS(ALL_XXXINIT_SECTIONS)) &&
-	    match(fromsym, PATTERNS("*driver")))
-		return 0;
-
 	/*
 	 * symbols in data sections must not refer to .exit.*, but there are
 	 * quite a few offenders, so hide these unless for W=1 builds until