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kbuild: fix false section mismatch warnings 

Darren Jenkins <darrenrjenkins@gmail.com> pointed out a
number of false positives where we referenced variables
from a _driver variable.
Fix it by check for that pattern and ignore it.

Randy.Dunlap <rdunlap@xenotime.net> pointed out a similar
set of warnings for a number of scsi drivers.
In scsi world they misname their variables *_template or
*_sht so add these to list of variables that may have references
to .init.text with no warning.

Randy.Dunlap <rdunlap@xenotime.net> also pointed out a scsi driver
with many references to .exit.text from .rodata. This is compiler
generated references and we already ignore these for .init.text, so
ignore them for .exit.text also.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
hifive-unleashed-5.1
Sam Ravnborg 2006-04-14 23:54:13 +02:00 committed by Sam Ravnborg
parent b5ac4817de
commit 5ecdd0f67c
1 changed files with 9 additions and 4 deletions
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13
scripts/mod/modpost.c
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@ -492,17 +492,19 @@ static int strrcmp(const char *s, const char *sub)
* These functions may often be marked __init and we do not want to
* warn here.
* the pattern is identified by:
* tosec = .init.text | .exit.text
* tosec = .init.text | .exit.text | .init.data
* fromsec = .data
* atsym = *_driver, *_ops, *_probe, *probe_one
* atsym = *_driver, *_template, *_sht, *_ops, *_probe, *probe_one
**/
static int secref_whitelist(const char *tosec, const char *fromsec,
const char *atsym)
const char *atsym)
{
int f1 = 1, f2 = 1;
const char **s;
const char *pat2sym[] = {
"_driver",
"_template", /* scsi uses *_template a lot */
"_sht", /* scsi also used *_sht to some extent */
"_ops",
"_probe",
"_probe_one",
@ -522,7 +524,8 @@ static int secref_whitelist(const char *tosec, const char *fromsec,
/* Check for pattern 2 */
if ((strcmp(tosec, ".init.text") != 0) &&
(strcmp(tosec, ".exit.text") != 0))
(strcmp(tosec, ".exit.text") != 0) &&
(strcmp(tosec, ".init.data") != 0))
f2 = 0;
if (strcmp(fromsec, ".data") != 0)
f2 = 0;
@ -820,6 +823,7 @@ static int exit_section(const char *name)
* For our future {in}sanity, add a comment that this is the ppc .opd
* section, not the ia64 .opd section.
* ia64 .opd should not point to discarded sections.
* [.rodata] like for .init.text we ignore .rodata references -same reason
**/
static int exit_section_ref_ok(const char *name)
{
@ -829,6 +833,7 @@ static int exit_section_ref_ok(const char *name)
".exit.text",
".exit.data",
".init.text",
".rodata",
".opd", /* See comment [OPD] */
".toc1", /* used by ppc64 */
".altinstructions",