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[PATCH] powerpc: Clean up pSeries firmware feature initialisation 

Clean up fw_feature_init in platforms/pseries/setup.c. Clean up white space
and replace the while loop with a for loop - which seems clearer to me.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Michael Ellerman 2006-02-10 15:47:32 +11:00 committed by Paul Mackerras
parent a7cb03375d
commit 0941d57aa7
1 changed files with 22 additions and 26 deletions
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48
arch/powerpc/platforms/pseries/setup.c
View File

@ -263,48 +263,44 @@ static int __init pSeries_init_panel(void)
arch_initcall(pSeries_init_panel);
/* Build up the ppc64_firmware_features bitmask field
* using contents of device-tree/ibm,hypertas-functions.
* Ultimately this functionality may be moved into prom.c prom_init().
/* Build up the firmware features bitmask using the contents of
* device-tree/ibm,hypertas-functions. Ultimately this functionality may
* be moved into prom.c prom_init().
*/
static void __init fw_feature_init(void)
{
struct device_node * dn;
char * hypertas;
unsigned int len;
struct device_node *dn;
char *hypertas, *s;
int len, i;
DBG(" -> fw_feature_init()\n");
ppc64_firmware_features = 0;
dn = of_find_node_by_path("/rtas");
if (dn == NULL) {
printk(KERN_ERR "WARNING ! Cannot find RTAS in device-tree !\n");
goto no_rtas;
printk(KERN_ERR "WARNING! Cannot find RTAS in device-tree!\n");
goto out;
}
hypertas = get_property(dn, "ibm,hypertas-functions", &len);
if (hypertas) {
while (len > 0){
int i, hypertas_len;
if (hypertas == NULL)
goto out;
for (s = hypertas; s < hypertas + len; s += strlen(s) + 1) {
for (i = 0; i < FIRMWARE_MAX_FEATURES; i++) {
/* check value against table of strings */
for(i=0; i < FIRMWARE_MAX_FEATURES ;i++) {
if ((firmware_features_table[i].name) &&
(strcmp(firmware_features_table[i].name,hypertas))==0) {
/* we have a match */
ppc64_firmware_features |=
(firmware_features_table[i].val);
break;
}
}
hypertas_len = strlen(hypertas);
len -= hypertas_len +1;
hypertas+= hypertas_len +1;
if (!firmware_features_table[i].name ||
strcmp(firmware_features_table[i].name, s))
continue;
/* we have a match */
ppc64_firmware_features |=
firmware_features_table[i].val;
break;
}
}
out:
of_node_put(dn);
no_rtas:
DBG(" <- fw_feature_init()\n");
}