ALSA: asihpi - Code cleanup.

Remove unused function.
Simplify hpi_alloc_control_cache.
Remove useless assignment to struct subsequently freed.

Signed-off-by: Eliot Blennerhassett <eblennerhassett@audioscience.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

2 files changed, 16 insertions, 41 deletions

diff --git a/sound/pci/asihpi/hpicmn.c b/sound/pci/asihpi/hpicmn.c
index 8346aeabee5d..4d696ab4b1f0 100644
--- a/sound/pci/asihpi/hpicmn.c
+++ b/sound/pci/asihpi/hpicmn.c
@@ -156,7 +156,7 @@ static void subsys_get_adapter(struct hpi_message *phm,
         /* find the nCount'th nonzero adapter in array */
         for (index = 0; index < HPI_MAX_ADAPTERS; index++) {
                 if (adapters.adapter[index].adapter_type) {
-                        if (count == 0)
+                        if (!count)
                                 break;
                         count--;
                 }
@@ -199,7 +199,7 @@ static unsigned int control_cache_alloc_check(struct hpi_control_cache *pC)
                                 &p_master_cache[byte_count];
 
                         if (!info->size_in32bit_words) {
-                                if (i == 0) {
+                                if (!i) {
                                         HPI_DEBUG_LOG(INFO,
                                                 "adap %d cache not ready?\n",
                                                 pC->adap_idx);
@@ -279,28 +279,6 @@ static short find_control(u16 control_index,
         return 1;
 }
 
-/** Used by the kernel driver to figure out if a buffer needs mapping.
- */
-short hpi_check_buffer_mapping(struct hpi_control_cache *p_cache,
-        struct hpi_message *phm, void **p, unsigned int *pN)
-{
-        *pN = 0;
-        *p = NULL;
-        if ((phm->function == HPI_CONTROL_GET_STATE)
-                && (phm->object == HPI_OBJ_CONTROLEX)
-                ) {
-                struct hpi_control_cache_info *pI;
-
-                if (!find_control(phm->obj_index, p_cache, &pI)) {
-                        HPI_DEBUG_LOG(VERBOSE,
-                                "HPICMN find_control() failed for adap %d\n",
-                                phm->adapter_index);
-                        return 0;
-                }
-        }
-        return 0;
-}
-
 /* allow unified treatment of several string fields within struct */
 #define HPICMN_PAD_OFS_AND_SIZE(m)  {\
         offsetof(struct hpi_control_cache_pad, m), \
@@ -612,24 +590,24 @@ void hpi_cmn_control_cache_sync_to_msg(struct hpi_control_cache *p_cache,
         }
 }
 
-struct hpi_control_cache *hpi_alloc_control_cache(const u32
-        number_of_controls, const u32 size_in_bytes, u8 *pDSP_control_buffer)
+struct hpi_control_cache *hpi_alloc_control_cache(const u32 control_count,
+        const u32 size_in_bytes, u8 *p_dsp_control_buffer)
 {
         struct hpi_control_cache *p_cache =
                 kmalloc(sizeof(*p_cache), GFP_KERNEL);
         if (!p_cache)
                 return NULL;
+
         p_cache->p_info =
-                kmalloc(sizeof(*p_cache->p_info) * number_of_controls,
-                        GFP_KERNEL);
+                kmalloc(sizeof(*p_cache->p_info) * control_count, GFP_KERNEL);
         if (!p_cache->p_info) {
                 kfree(p_cache);
                 return NULL;
         }
+        memset(p_cache->p_info, 0, sizeof(*p_cache->p_info) * control_count);
         p_cache->cache_size_in_bytes = size_in_bytes;
-        p_cache->control_count = number_of_controls;
-        p_cache->p_cache =
-                (struct hpi_control_cache_single *)pDSP_control_buffer;
+        p_cache->control_count = control_count;
+        p_cache->p_cache = p_dsp_control_buffer;
         p_cache->init = 0;
         return p_cache;
 }
@@ -638,8 +616,6 @@ void hpi_free_control_cache(struct hpi_control_cache *p_cache)
 {
         if (p_cache) {
                 kfree(p_cache->p_info);
-                p_cache->p_info = NULL;
-                p_cache->init = 0;
                 kfree(p_cache);
         }
 }
diff --git a/sound/pci/asihpi/hpicmn.h b/sound/pci/asihpi/hpicmn.h
index 2708c4df2c70..6db1e0ba4728 100644
--- a/sound/pci/asihpi/hpicmn.h
+++ b/sound/pci/asihpi/hpicmn.h
@@ -33,15 +33,15 @@ struct hpi_adapter_obj {
 };
 
 struct hpi_control_cache {
-        u16 init;            /**< indicates whether the
-                                structures are initialized */
+        /** indicates whether the structures are initialized */
+        u16 init;
         u16 adap_idx;
         u32 control_count;
         u32 cache_size_in_bytes;
-        struct hpi_control_cache_info
-        **p_info;                /**< pointer to allocated memory of
-                                lookup pointers. */
-        u8 *p_cache;    /**< pointer to DSP's control cache. */
+        /** pointer to allocated memory of lookup pointers. */
+        struct hpi_control_cache_info **p_info;
+        /** pointer to DSP's control cache. */
+        u8 *p_cache;
 };
 
 struct hpi_adapter_obj *hpi_find_adapter(u16 adapter_index);
@@ -57,6 +57,5 @@ void hpi_free_control_cache(struct hpi_control_cache *p_cache);
 
 void hpi_cmn_control_cache_sync_to_msg(struct hpi_control_cache *pC,
         struct hpi_message *phm, struct hpi_response *phr);
+
 u16 hpi_validate_response(struct hpi_message *phm, struct hpi_response *phr);
-short hpi_check_buffer_mapping(struct hpi_control_cache *p_cache,
-        struct hpi_message *phm, void **p, unsigned int *pN);