omap: Fix omap_mux_init_signal not to trash muxname
Otherwise the muxname passed to the function will get truncated.
Based on an earlier patch by rockefeller.lin@innocomm.com.
Reported-by: rockefeller.lin@innocomm.com
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/mux.c b/arch/arm/mach-omap2/mux.c
index 6c2f8f0..e33740c 100644
--- a/arch/arm/mach-omap2/mux.c
+++ b/arch/arm/mach-omap2/mux.c
@@ -127,17 +127,16 @@
return 0;
}
-int __init omap_mux_init_signal(char *muxname, int val)
+int __init omap_mux_init_signal(const char *muxname, int val)
{
struct omap_mux_entry *e;
- char *m0_name = NULL, *mode_name = NULL;
- int found = 0;
+ const char *mode_name;
+ int found = 0, mode0_len = 0;
mode_name = strchr(muxname, '.');
if (mode_name) {
- *mode_name = '\0';
+ mode0_len = strlen(muxname) - strlen(mode_name);
mode_name++;
- m0_name = muxname;
} else {
mode_name = muxname;
}
@@ -147,9 +146,11 @@
char *m0_entry = m->muxnames[0];
int i;
- if (m0_name && strcmp(m0_name, m0_entry))
+ /* First check for full name in mode0.muxmode format */
+ if (mode0_len && strncmp(muxname, m0_entry, mode0_len))
continue;
+ /* Then check for muxmode only */
for (i = 0; i < OMAP_MUX_NR_MODES; i++) {
char *mode_cur = m->muxnames[i];