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kbuild: fix warnings from .pci_fixup section

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Now where we do not pass vmlinux to modpost we started
to see section mismatch warnings from .pci_fixup.
Refactored code a little to include these in the
whitelist again.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
This commit is contained in:
Sam Ravnborg 2007-02-26 17:49:06 +01:00
parent aae5f662a3
commit 9bf8cb9b79
1 changed files with 25 additions and 19 deletions
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26
scripts/mod/modpost.c
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@ -592,6 +592,14 @@ static int strrcmp(const char *s, const char *sub)
* atsym = *driver, *_template, *_sht, *_ops, *_probe, *probe_one, *_console
*
* Pattern 3:
* Whitelist all references from .pci_fixup* section to .init.text
* This is part of the PCI init when built-in
*
* Pattern 4:
* Whitelist all refereces from .text.head to .init.data
* Whitelist all refereces from .text.head to .init.text
*
* Pattern 5:
* Some symbols belong to init section but still it is ok to reference
* these from non-init sections as these symbols don't have any memory
* allocated for them and symbol address and value are same. So even
@ -599,7 +607,8 @@ static int strrcmp(const char *s, const char *sub)
* For ex. symbols marking the init section boundaries.
* This pattern is identified by
* refsymname = __init_begin, _sinittext, _einittext
* Pattern 4:
*
* Pattern 6:
* During the early init phase we have references from .init.text to
* .text we have an intended section mismatch - do not warn about it.
* See kernel_init() in init/main.c
@ -657,26 +666,23 @@ static int secref_whitelist(const char *modname, const char *tosec,
if (f1 && f2)
return 1;
/* Whitelist all references from .pci_fixup section if vmlinux
* Whitelist all refereces from .text.head to .init.data if vmlinux
* Whitelist all refereces from .text.head to .init.text if vmlinux
*/
if (is_vmlinux(modname)) {
if ((strcmp(fromsec, ".pci_fixup") == 0) &&
/* Check for pattern 3 */
if ((strncmp(fromsec, ".pci_fixup", strlen(".pci_fixup")) == 0) &&
(strcmp(tosec, ".init.text") == 0))
return 1;
/* Check for pattern 4 */
if ((strcmp(fromsec, ".text.head") == 0) &&
((strcmp(tosec, ".init.data") == 0) ||
(strcmp(tosec, ".init.text") == 0)))
return 1;
/* Check for pattern 3 */
/* Check for pattern 5 */
for (s = pat3refsym; *s; s++)
if (strcmp(refsymname, *s) == 0)
return 1;
}
/* Check for pattern 4 */
/* Check for pattern 6 */
if ((strcmp(tosec, ".init.text") == 0) &&
(strcmp(fromsec, ".text") == 0) &&
(strcmp(refsymname, "kernel_init") == 0))