[POWERPC] sound: Constify & voidify get_property()

Now that get_property() returns a void *, there's no need to cast its
return value. Also, treat the return value as const, so we can
constify get_property later.

powerpc-specific sound driver changes.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/sound/aoa/core/snd-aoa-gpio-feature.c b/sound/aoa/core/snd-aoa-gpio-feature.c
index 7ae0c0b..2ab5533 100644 (file)
--- a/sound/aoa/core/snd-aoa-gpio-feature.c
+++ b/sound/aoa/core/snd-aoa-gpio-feature.c
@@ -56,7 +56,7 @@ static struct device_node *get_gpio(char *name,
 {
        struct device_node *np, *gpio;
        u32 *reg;
-       char *audio_gpio;
+       const char *audio_gpio;
 
        *gpioptr = -1;
 

diff --git a/sound/oss/dmasound/dmasound_awacs.c b/sound/oss/dmasound/dmasound_awacs.c
index 4359903..9ae659f 100644 (file)
--- a/sound/oss/dmasound/dmasound_awacs.c
+++ b/sound/oss/dmasound/dmasound_awacs.c
@@ -347,8 +347,8 @@ int
 setup_audio_gpio(const char *name, const char* compatible, int *gpio_addr, int* gpio_pol)
 {
        struct device_node *np;
-       u32* pp;
-       
+       const u32* pp;
+
        np = find_devices("gpio");
        if (!np)
                return -ENODEV;
@@ -356,7 +356,8 @@ setup_audio_gpio(const char *name, const char* compatible, int *gpio_addr, int*
        np = np->child;
        while(np != 0) {
                if (name) {
-                       char *property = get_property(np,"audio-gpio",NULL);
+                       const char *property =
+                               get_property(np,"audio-gpio",NULL);
                        if (property != 0 && strcmp(property,name) == 0)
                                break;
                } else if (compatible && device_is_compatible(np, compatible))
@@ -365,11 +366,11 @@ setup_audio_gpio(const char *name, const char* compatible, int *gpio_addr, int*
        }
        if (!np)
                return -ENODEV;
-       pp = (u32 *)get_property(np, "AAPL,address", NULL);
+       pp = get_property(np, "AAPL,address", NULL);
        if (!pp)
                return -ENODEV;
        *gpio_addr = (*pp) & 0x0000ffff;
-       pp = (u32 *)get_property(np, "audio-gpio-active-state", NULL);
+       pp = get_property(np, "audio-gpio-active-state", NULL);
        if (pp)
                *gpio_pol = *pp;
        else

diff --git a/sound/ppc/tumbler.c b/sound/ppc/tumbler.c
index 692c611..b94ecd0 100644 (file)
--- a/sound/ppc/tumbler.c
+++ b/sound/ppc/tumbler.c
@@ -1035,7 +1035,7 @@ static struct device_node *find_audio_device(const char *name)
                return NULL;
   
        for (np = np->child; np; np = np->sibling) {
-               char *property = get_property(np, "audio-gpio", NULL);
+               const char *property = get_property(np, "audio-gpio", NULL);
                if (property && strcmp(property, name) == 0)
                        return np;
        }  
@@ -1062,7 +1062,8 @@ static long tumbler_find_device(const char *device, const char *platform,
                                struct pmac_gpio *gp, int is_compatible)
 {
        struct device_node *node;
-       u32 *base, addr;
+       const u32 *base;
+       u32 addr;
 
        if (is_compatible)
                node = find_compatible_audio_device(device);
@@ -1074,9 +1075,9 @@ static long tumbler_find_device(const char *device, const char *platform,
                return -ENODEV;
        }
 
-       base = (u32 *)get_property(node, "AAPL,address", NULL);
+       base = get_property(node, "AAPL,address", NULL);
        if (! base) {
-               base = (u32 *)get_property(node, "reg", NULL);
+               base = get_property(node, "reg", NULL);
                if (!base) {
                        DBG("(E) cannot find address for device %s !\n", device);
                        snd_printd("cannot find address for device %s\n", device);
@@ -1090,13 +1091,13 @@ static long tumbler_find_device(const char *device, const char *platform,
 
        gp->addr = addr & 0x0000ffff;
        /* Try to find the active state, default to 0 ! */
-       base = (u32 *)get_property(node, "audio-gpio-active-state", NULL);
+       base = get_property(node, "audio-gpio-active-state", NULL);
        if (base) {
                gp->active_state = *base;
                gp->active_val = (*base) ? 0x5 : 0x4;
                gp->inactive_val = (*base) ? 0x4 : 0x5;
        } else {
-               u32 *prop = NULL;
+               const u32 *prop = NULL;
                gp->active_state = 0;
                gp->active_val = 0x4;
                gp->inactive_val = 0x5;
@@ -1105,7 +1106,7 @@ static long tumbler_find_device(const char *device, const char *platform,
                 * as we don't yet have an interpreter for these things
                 */
                if (platform)
-                       prop = (u32 *)get_property(node, platform, NULL);
+                       prop = get_property(node, platform, NULL);
                if (prop) {
                        if (prop[3] == 0x9 && prop[4] == 0x9) {
                                gp->active_val = 0xd;