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Diffstat (limited to 'scripts/mod')
-rw-r--r--scripts/mod/modpost.c30
1 files changed, 24 insertions, 6 deletions
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 3db4edcc5a1..ee58ded021d 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -640,7 +640,7 @@ static int data_section(const char *name)
* Pattern 0:
* Do not warn if funtion/data are marked with __init_refok/__initdata_refok.
* The pattern is identified by:
- * fromsec = .text.init.refok | .data.init.refok
+ * fromsec = .text.init.refok* | .data.init.refok*
*
* Pattern 1:
* If a module parameter is declared __initdata and permissions=0
@@ -675,11 +675,18 @@ static int data_section(const char *name)
* This pattern is identified by
* refsymname = __init_begin, _sinittext, _einittext
*
+ * Pattern 5:
+ * Xtensa uses literal sections for constants that are accessed PC-relative.
+ * Literal sections may safely reference their text sections.
+ * (Note that the name for the literal section omits any trailing '.text')
+ * tosec = <section>[.text]
+ * fromsec = <section>.literal
**/
static int secref_whitelist(const char *modname, const char *tosec,
const char *fromsec, const char *atsym,
const char *refsymname)
{
+ int len;
const char **s;
const char *pat2sym[] = {
"driver",
@@ -701,8 +708,8 @@ static int secref_whitelist(const char *modname, const char *tosec,
};
/* Check for pattern 0 */
- if ((strcmp(fromsec, ".text.init.refok") == 0) ||
- (strcmp(fromsec, ".data.init.refok") == 0))
+ if ((strncmp(fromsec, ".text.init.refok", strlen(".text.init.refok")) == 0) ||
+ (strncmp(fromsec, ".data.init.refok", strlen(".data.init.refok")) == 0))
return 1;
/* Check for pattern 1 */
@@ -728,6 +735,15 @@ static int secref_whitelist(const char *modname, const char *tosec,
if (strcmp(refsymname, *s) == 0)
return 1;
+ /* Check for pattern 5 */
+ if (strrcmp(tosec, ".text") == 0)
+ len = strlen(tosec) - strlen(".text");
+ else
+ len = strlen(tosec);
+ if ((strncmp(tosec, fromsec, len) == 0) && (strlen(fromsec) > len) &&
+ (strcmp(fromsec + len, ".literal") == 0))
+ return 1;
+
return 0;
}
@@ -856,9 +872,9 @@ static void warn_sec_mismatch(const char *modname, const char *fromsec,
refsymname = elf->strtab + refsym->st_name;
/* check whitelist - we may ignore it */
- if (before &&
- secref_whitelist(modname, secname, fromsec,
- elf->strtab + before->st_name, refsymname))
+ if (secref_whitelist(modname, secname, fromsec,
+ before ? elf->strtab + before->st_name : "",
+ refsymname))
return;
if (before && after) {
@@ -1111,6 +1127,8 @@ static int initexit_section_ref_ok(const char *name)
".smp_locks",
".stab",
".m68k_fixup",
+ ".xt.prop", /* xtensa informational section */
+ ".xt.lit", /* xtensa informational section */
NULL
};
/* Start of section names */