ALSA: ctxfi - Simple code clean up

- replace NULL == xxx with !xxx
- replace NULL != xxx with xxx
- similar trivial cleanups

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 38 insertions, 39 deletions

diff --git a/sound/pci/ctxfi/ctatc.c b/sound/pci/ctxfi/ctatc.c
index a49c76647307..b1b3a644f738 100644
--- a/sound/pci/ctxfi/ctatc.c
+++ b/sound/pci/ctxfi/ctatc.c
@@ -136,7 +136,7 @@ static int ct_map_audio_buffer(struct ct_atc *atc, struct ct_atc_pcm *apcm)
         struct snd_pcm_runtime *runtime;
         struct ct_vm *vm;
 
-        if (NULL == apcm->substream)
+        if (!apcm->substream)
                 return 0;
 
         runtime = apcm->substream->runtime;
@@ -144,7 +144,7 @@ static int ct_map_audio_buffer(struct ct_atc *atc, struct ct_atc_pcm *apcm)
 
         apcm->vm_block = vm->map(vm, apcm->substream, runtime->dma_bytes);
 
-        if (NULL == apcm->vm_block)
+        if (!apcm->vm_block)
                 return -ENOENT;
 
         return 0;
@@ -154,7 +154,7 @@ static void ct_unmap_audio_buffer(struct ct_atc *atc, struct ct_atc_pcm *apcm)
 {
         struct ct_vm *vm;
 
-        if (NULL == apcm->vm_block)
+        if (!apcm->vm_block)
                 return;
 
         vm = atc->vm;
@@ -231,16 +231,16 @@ atc_get_pitch(unsigned int input_rate, unsigned int output_rate)
 
 static int select_rom(unsigned int pitch)
 {
-        if ((pitch > 0x00428f5c) && (pitch < 0x01b851ec)) {
+        if (pitch > 0x00428f5c && pitch < 0x01b851ec) {
                 /* 0.26 <= pitch <= 1.72 */
                 return 1;
-        } else if ((0x01d66666 == pitch) || (0x01d66667 == pitch)) {
+        } else if (pitch == 0x01d66666 || pitch == 0x01d66667) {
                 /* pitch == 1.8375 */
                 return 2;
-        } else if (0x02000000 == pitch) {
+        } else if (pitch == 0x02000000) {
                 /* pitch == 2 */
                 return 3;
-        } else if ((pitch >= 0x0) && (pitch <= 0x08000000)) {
+        } else if (pitch >= 0x0 && pitch <= 0x08000000) {
                 /* 0 <= pitch <= 8 */
                 return 0;
         } else {
@@ -283,7 +283,7 @@ static int atc_pcm_playback_prepare(struct ct_atc *atc, struct ct_atc_pcm *apcm)
         /* Get AMIXER resource */
         n_amixer = (n_amixer < 2) ? 2 : n_amixer;
         apcm->amixers = kzalloc(sizeof(void *)*n_amixer, GFP_KERNEL);
-        if (NULL == apcm->amixers) {
+        if (!apcm->amixers) {
                 err = -ENOMEM;
                 goto error1;
         }
@@ -311,7 +311,7 @@ static int atc_pcm_playback_prepare(struct ct_atc *atc, struct ct_atc_pcm *apcm)
                                         INIT_VOL, atc->pcm[i+device*2]);
                 mutex_unlock(&atc->atc_mutex);
                 src = src->ops->next_interleave(src);
-                if (NULL == src)
+                if (!src)
                         src = apcm->src;
         }
 
@@ -334,7 +334,7 @@ atc_pcm_release_resources(struct ct_atc *atc, struct ct_atc_pcm *apcm)
         struct srcimp *srcimp;
         int i;
 
-        if (NULL != apcm->srcimps) {
+        if (apcm->srcimps) {
                 for (i = 0; i < apcm->n_srcimp; i++) {
                         srcimp = apcm->srcimps[i];
                         srcimp->ops->unmap(srcimp);
@@ -345,7 +345,7 @@ atc_pcm_release_resources(struct ct_atc *atc, struct ct_atc_pcm *apcm)
                 apcm->srcimps = NULL;
         }
 
-        if (NULL != apcm->srccs) {
+        if (apcm->srccs) {
                 for (i = 0; i < apcm->n_srcc; i++) {
                         src_mgr->put_src(src_mgr, apcm->srccs[i]);
                         apcm->srccs[i] = NULL;
@@ -354,7 +354,7 @@ atc_pcm_release_resources(struct ct_atc *atc, struct ct_atc_pcm *apcm)
                 apcm->srccs = NULL;
         }
 
-        if (NULL != apcm->amixers) {
+        if (apcm->amixers) {
                 for (i = 0; i < apcm->n_amixer; i++) {
                         amixer_mgr->put_amixer(amixer_mgr, apcm->amixers[i]);
                         apcm->amixers[i] = NULL;
@@ -363,17 +363,17 @@ atc_pcm_release_resources(struct ct_atc *atc, struct ct_atc_pcm *apcm)
                 apcm->amixers = NULL;
         }
 
-        if (NULL != apcm->mono) {
+        if (apcm->mono) {
                 sum_mgr->put_sum(sum_mgr, apcm->mono);
                 apcm->mono = NULL;
         }
 
-        if (NULL != apcm->src) {
+        if (apcm->src) {
                 src_mgr->put_src(src_mgr, apcm->src);
                 apcm->src = NULL;
         }
 
-        if (NULL != apcm->vm_block) {
+        if (apcm->vm_block) {
                 /* Undo device virtual mem map */
                 ct_unmap_audio_buffer(atc, apcm);
                 apcm->vm_block = NULL;
@@ -419,7 +419,7 @@ static int atc_pcm_stop(struct ct_atc *atc, struct ct_atc_pcm *apcm)
         src->ops->set_state(src, SRC_STATE_OFF);
         src->ops->commit_write(src);
 
-        if (NULL != apcm->srccs) {
+        if (apcm->srccs) {
                 for (i = 0; i < apcm->n_srcc; i++) {
                         src = apcm->srccs[i];
                         src->ops->set_bm(src, 0);
@@ -544,18 +544,18 @@ atc_pcm_capture_get_resources(struct ct_atc *atc, struct ct_atc_pcm *apcm)
 
         if (n_srcc) {
                 apcm->srccs = kzalloc(sizeof(void *)*n_srcc, GFP_KERNEL);
-                if (NULL == apcm->srccs)
+                if (!apcm->srccs)
                         return -ENOMEM;
         }
         if (n_amixer) {
                 apcm->amixers = kzalloc(sizeof(void *)*n_amixer, GFP_KERNEL);
-                if (NULL == apcm->amixers) {
+                if (!apcm->amixers) {
                         err = -ENOMEM;
                         goto error1;
                 }
         }
         apcm->srcimps = kzalloc(sizeof(void *)*n_srcimp, GFP_KERNEL);
-        if (NULL == apcm->srcimps) {
+        if (!apcm->srcimps) {
                 err = -ENOMEM;
                 goto error1;
         }
@@ -818,7 +818,7 @@ static int spdif_passthru_playback_get_resources(struct ct_atc *atc,
         /* Get AMIXER resource */
         n_amixer = (n_amixer < 2) ? 2 : n_amixer;
         apcm->amixers = kzalloc(sizeof(void *)*n_amixer, GFP_KERNEL);
-        if (NULL == apcm->amixers) {
+        if (!apcm->amixers) {
                 err = -ENOMEM;
                 goto error1;
         }
@@ -919,7 +919,7 @@ spdif_passthru_playback_prepare(struct ct_atc *atc, struct ct_atc_pcm *apcm)
                 amixer = apcm->amixers[i];
                 amixer->ops->setup(amixer, &src->rsc, INIT_VOL, NULL);
                 src = src->ops->next_interleave(src);
-                if (NULL == src)
+                if (!src)
                         src = apcm->src;
         }
         /* Connect to SPDIFOO */
@@ -1121,7 +1121,7 @@ static int atc_release_resources(struct ct_atc *atc)
         struct ct_mixer *mixer = NULL;
 
         /* disconnect internal mixer objects */
-        if (NULL != atc->mixer) {
+        if (atc->mixer) {
                 mixer = atc->mixer;
                 mixer->set_input_left(mixer, MIX_LINE_IN, NULL);
                 mixer->set_input_right(mixer, MIX_LINE_IN, NULL);
@@ -1131,7 +1131,7 @@ static int atc_release_resources(struct ct_atc *atc)
                 mixer->set_input_right(mixer, MIX_SPDIF_IN, NULL);
         }
 
-        if (NULL != atc->daios) {
+        if (atc->daios) {
                 daio_mgr = (struct daio_mgr *)atc->rsc_mgrs[DAIO];
                 for (i = 0; i < atc->n_daio; i++) {
                         daio = atc->daios[i];
@@ -1149,7 +1149,7 @@ static int atc_release_resources(struct ct_atc *atc)
                 atc->daios = NULL;
         }
 
-        if (NULL != atc->pcm) {
+        if (atc->pcm) {
                 sum_mgr = atc->rsc_mgrs[SUM];
                 for (i = 0; i < atc->n_pcm; i++)
                         sum_mgr->put_sum(sum_mgr, atc->pcm[i]);
@@ -1158,7 +1158,7 @@ static int atc_release_resources(struct ct_atc *atc)
                 atc->pcm = NULL;
         }
 
-        if (NULL != atc->srcs) {
+        if (atc->srcs) {
                 src_mgr = atc->rsc_mgrs[SRC];
                 for (i = 0; i < atc->n_src; i++)
                         src_mgr->put_src(src_mgr, atc->srcs[i]);
@@ -1167,7 +1167,7 @@ static int atc_release_resources(struct ct_atc *atc)
                 atc->srcs = NULL;
         }
 
-        if (NULL != atc->srcimps) {
+        if (atc->srcimps) {
                 srcimp_mgr = atc->rsc_mgrs[SRCIMP];
                 for (i = 0; i < atc->n_srcimp; i++) {
                         srcimp = atc->srcimps[i];
@@ -1185,7 +1185,7 @@ static int ct_atc_destroy(struct ct_atc *atc)
 {
         int i = 0;
 
-        if (NULL == atc)
+        if (!atc)
                 return 0;
 
         if (atc->timer) {
@@ -1196,21 +1196,20 @@ static int ct_atc_destroy(struct ct_atc *atc)
         atc_release_resources(atc);
 
         /* Destroy internal mixer objects */
-        if (NULL != atc->mixer)
+        if (atc->mixer)
                 ct_mixer_destroy(atc->mixer);
 
         for (i = 0; i < NUM_RSCTYP; i++) {
-                if ((NULL != rsc_mgr_funcs[i].destroy) &&
-                    (NULL != atc->rsc_mgrs[i]))
+                if (rsc_mgr_funcs[i].destroy && atc->rsc_mgrs[i])
                         rsc_mgr_funcs[i].destroy(atc->rsc_mgrs[i]);
 
         }
 
-        if (NULL != atc->hw)
+        if (atc->hw)
                 destroy_hw_obj((struct hw *)atc->hw);
 
         /* Destroy device virtual memory manager object */
-        if (NULL != atc->vm) {
+        if (atc->vm) {
                 ct_vm_destroy(atc->vm);
                 atc->vm = NULL;
         }
@@ -1275,7 +1274,7 @@ int __devinit ct_atc_create_alsa_devs(struct ct_atc *atc)
         alsa_dev_funcs[MIXER].public_name = atc->chip_name;
 
         for (i = 0; i < NUM_CTALSADEVS; i++) {
-                if (NULL == alsa_dev_funcs[i].create)
+                if (!alsa_dev_funcs[i].create)
                         continue;
 
                 err = alsa_dev_funcs[i].create(atc, i,
@@ -1312,7 +1311,7 @@ static int __devinit atc_create_hw_devs(struct ct_atc *atc)
                 return err;
 
         for (i = 0; i < NUM_RSCTYP; i++) {
-                if (NULL == rsc_mgr_funcs[i].create)
+                if (!rsc_mgr_funcs[i].create)
                         continue;
 
                 err = rsc_mgr_funcs[i].create(atc->hw, &atc->rsc_mgrs[i]);
@@ -1339,19 +1338,19 @@ static int atc_get_resources(struct ct_atc *atc)
         int err, i;
 
         atc->daios = kzalloc(sizeof(void *)*(DAIONUM), GFP_KERNEL);
-        if (NULL == atc->daios)
+        if (!atc->daios)
                 return -ENOMEM;
 
         atc->srcs = kzalloc(sizeof(void *)*(2*2), GFP_KERNEL);
-        if (NULL == atc->srcs)
+        if (!atc->srcs)
                 return -ENOMEM;
 
         atc->srcimps = kzalloc(sizeof(void *)*(2*2), GFP_KERNEL);
-        if (NULL == atc->srcimps)
+        if (!atc->srcimps)
                 return -ENOMEM;
 
         atc->pcm = kzalloc(sizeof(void *)*(2*4), GFP_KERNEL);
-        if (NULL == atc->pcm)
+        if (!atc->pcm)
                 return -ENOMEM;
 
         daio_mgr = (struct daio_mgr *)atc->rsc_mgrs[DAIO];
@@ -1648,7 +1647,7 @@ int __devinit ct_atc_create(struct snd_card *card, struct pci_dev *pci,
         *ratc = NULL;
 
         atc = kzalloc(sizeof(*atc), GFP_KERNEL);
-        if (NULL == atc)
+        if (!atc)
                 return -ENOMEM;
 
         /* Set operations */