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-rw-r--r--drivers/isdn/hisax/config.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/isdn/hisax/config.c b/drivers/isdn/hisax/config.c
index 8d53a7fd2671..a43162c2ef15 100644
--- a/drivers/isdn/hisax/config.c
+++ b/drivers/isdn/hisax/config.c
@@ -361,11 +361,11 @@ module_param_array(io1, int, NULL, 0);
int nrcards;
-extern char *l1_revision;
-extern char *l2_revision;
-extern char *l3_revision;
-extern char *lli_revision;
-extern char *tei_revision;
+extern const char *l1_revision;
+extern const char *l2_revision;
+extern const char *l3_revision;
+extern const char *lli_revision;
+extern const char *tei_revision;
char *HiSax_getrev(const char *revision)
{