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Commit 5a4910fb authored by Sam Ravnborg's avatar Sam Ravnborg
Browse files

kbuild: whitelist logo references from .text to .init.data 



drivers/video/logo has references from .text to .init.data
but function is only used during early init.
So reference is OK and we do not want to warn about them =>
whitelist the reference.

Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
parent a61b2dfd

scripts/mod/modpost.c

+15 −0
Original line number Diff line number Diff line
@@ -616,6 +616,15 @@ static int strrcmp(const char *s, const char *sub) 
 *   fromsec = .text

 *   atsym = kernel_init

 *   Some symbols belong to init section but still it is ok to reference

 *

 * Pattern 7:

 *  Logos used in drivers/video/logo reside in __initdata but the

 *  funtion that references them are EXPORT_SYMBOL() so cannot be

 *  marker __init. So we whitelist them here.

 *  The pattern is:

 *  tosec      = .init.data

 *  fromsec    = .text*

 *  refsymname = logo_

 **/

static int secref_whitelist(const char *modname, const char *tosec,

			    const char *fromsec, const char *atsym,
@@ -687,6 +696,12 @@ static int secref_whitelist(const char *modname, const char *tosec, 
	    (strcmp(fromsec, ".text") == 0) &&

	    (strcmp(refsymname, "kernel_init") == 0))

		return 1;



	/* Check for pattern 7 */

	if ((strcmp(tosec, ".init.data") == 0) &&

	    (strncmp(fromsec, ".text", strlen(".text")) == 0) &&

	    (strncmp(refsymname, "logo_", strlen("logo_")) == 0))

		return 1;

	return 0;

}