[PARISC] Add os_id_to_string helper

Add a helper to asm/pdc.h to translate OS_ID values to strings
and use it in the pdc_stable driver.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

2 files changed, 15 insertions, 12 deletions

diff --git a/drivers/parisc/pdc_stable.c b/drivers/parisc/pdc_stable.c
index 97b345858043..ea1b7a63598e 100644
--- a/drivers/parisc/pdc_stable.c
+++ b/drivers/parisc/pdc_stable.c
@@ -622,22 +622,12 @@ static ssize_t
 pdcs_osid_read(struct subsystem *entry, char *buf)
 {
         char *out = buf;
-        char *tmpstr = NULL;
 
         if (!entry || !buf)
                 return -EINVAL;
 
-        switch (pdcs_osid) {
-                case 0x0000:    tmpstr = "No OS"; break;
-                case 0x0001:    tmpstr = "HP-UX"; break;
-                case 0x0002:    tmpstr = "MPE-iX"; break;
-                case 0x0003:    tmpstr = "OSF"; break;
-                case 0x0004:    tmpstr = "HP-RT"; break;
-                case 0x0005:    tmpstr = "Novell Netware"; break;
-                case 0x0006:    tmpstr = "Linux"; break;
-                default:        tmpstr = "Unknown"; break;
-        }
-        out += sprintf(out, "%s dependent data (0x%.4x)\n", tmpstr, pdcs_osid);
+        out += sprintf(out, "%s dependent data (0x%.4x)\n",
+                os_id_to_string(pdcs_osid), pdcs_osid);
 
         return out - buf;
 }
diff --git a/include/asm-parisc/pdc.h b/include/asm-parisc/pdc.h
index 33bff615d6e1..7a21f106ade6 100644
--- a/include/asm-parisc/pdc.h
+++ b/include/asm-parisc/pdc.h
@@ -284,6 +284,19 @@ typedef struct {
 #define OS_ID_NOVEL             5       /* NOVELL OS            */
 #define OS_ID_LINUX             6       /* Linux                */
 
+static inline char * os_id_to_string(u16 os_id) {
+        switch(os_id) {
+        case OS_ID_NONE:        return "No OS";
+        case OS_ID_HPUX:        return "HP-UX";
+        case OS_ID_MPEXL:       return "MPE-iX";
+        case OS_ID_OSF:         return "OSF";
+        case OS_ID_HPRT:        return "HP-RT";
+        case OS_ID_NOVEL:       return "Novell Netware";
+        case OS_ID_LINUX:       return "Linux";
+        default:        return "Unknown";
+        }
+}
+
 
 /* constants for PDC_CHASSIS */
 #define OSTAT_OFF               0