diff --git a/sound/pci/asihpi/hpi6000.c b/sound/pci/asihpi/hpi6000.c
index f7e374e..1b9bf93 100644
--- a/sound/pci/asihpi/hpi6000.c
+++ b/sound/pci/asihpi/hpi6000.c
@@ -625,6 +625,8 @@
 			control_cache_size, (struct hpi_control_cache_info *)
 			&phw->control_cache[0]
 			);
+		if (!phw->p_cache)
+			pao->has_control_cache = 0;
 	} else
 		pao->has_control_cache = 0;
 
diff --git a/sound/pci/asihpi/hpi6205.c b/sound/pci/asihpi/hpi6205.c
index 22c5fc6..2672f65 100644
--- a/sound/pci/asihpi/hpi6205.c
+++ b/sound/pci/asihpi/hpi6205.c
@@ -644,6 +644,8 @@
 				interface->control_cache.size_in_bytes,
 				(struct hpi_control_cache_info *)
 				p_control_cache_virtual);
+			if (!phw->p_cache)
+				err = HPI_ERROR_MEMORY_ALLOC;
 		}
 		if (!err) {
 			err = hpios_locked_mem_get_phys_addr(&phw->
diff --git a/sound/pci/asihpi/hpicmn.c b/sound/pci/asihpi/hpicmn.c
index dda4f1c..d67f4d3 100644
--- a/sound/pci/asihpi/hpicmn.c
+++ b/sound/pci/asihpi/hpicmn.c
@@ -571,14 +571,20 @@
 {
 	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);
+	if (!p_cache->p_info) {
+		kfree(p_cache);
+		return NULL;
+	}
 	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->init = 0;
-	p_cache->p_info =
-		kmalloc(sizeof(*p_cache->p_info) * p_cache->control_count,
-		GFP_KERNEL);
 	return p_cache;
 }
 
diff --git a/sound/pci/cs46xx/dsp_spos.c b/sound/pci/cs46xx/dsp_spos.c
index 3e5ca8f..e377287 100644
--- a/sound/pci/cs46xx/dsp_spos.c
+++ b/sound/pci/cs46xx/dsp_spos.c
@@ -225,39 +225,25 @@
 {
 	struct dsp_spos_instance * ins = kzalloc(sizeof(struct dsp_spos_instance), GFP_KERNEL);
 
-	if (ins == NULL) 
+	if (ins == NULL)
 		return NULL;
 
 	/* better to use vmalloc for this big table */
-	ins->symbol_table.nsymbols = 0;
 	ins->symbol_table.symbols = vmalloc(sizeof(struct dsp_symbol_entry) *
 					    DSP_MAX_SYMBOLS);
-	ins->symbol_table.highest_frag_index = 0;
-
-	if (ins->symbol_table.symbols == NULL) {
+	ins->code.data = kmalloc(DSP_CODE_BYTE_SIZE, GFP_KERNEL);
+	ins->modules = kmalloc(sizeof(struct dsp_module_desc) * DSP_MAX_MODULES, GFP_KERNEL);
+	if (!ins->symbol_table.symbols || !ins->code.data || !ins->modules) {
 		cs46xx_dsp_spos_destroy(chip);
 		goto error;
 	}
-
+	ins->symbol_table.nsymbols = 0;
+	ins->symbol_table.highest_frag_index = 0;
 	ins->code.offset = 0;
 	ins->code.size = 0;
-	ins->code.data = kmalloc(DSP_CODE_BYTE_SIZE, GFP_KERNEL);
-
-	if (ins->code.data == NULL) {
-		cs46xx_dsp_spos_destroy(chip);
-		goto error;
-	}
-
 	ins->nscb = 0;
 	ins->ntask = 0;
-
 	ins->nmodules = 0;
-	ins->modules = kmalloc(sizeof(struct dsp_module_desc) * DSP_MAX_MODULES, GFP_KERNEL);
-
-	if (ins->modules == NULL) {
-		cs46xx_dsp_spos_destroy(chip);
-		goto error;
-	}
 
 	/* default SPDIF input sample rate
 	   to 48000 khz */
@@ -271,8 +257,8 @@
 
 	/* set left and right validity bits and
 	   default channel status */
-	ins->spdif_csuv_default = 
-		ins->spdif_csuv_stream =  
+	ins->spdif_csuv_default =
+		ins->spdif_csuv_stream =
 	 /* byte 0 */  ((unsigned int)_wrap_all_bits(  (SNDRV_PCM_DEFAULT_CON_SPDIF        & 0xff)) << 24) |
 	 /* byte 1 */  ((unsigned int)_wrap_all_bits( ((SNDRV_PCM_DEFAULT_CON_SPDIF >> 8) & 0xff)) << 16) |
 	 /* byte 3 */   (unsigned int)_wrap_all_bits(  (SNDRV_PCM_DEFAULT_CON_SPDIF >> 24) & 0xff) |
@@ -281,6 +267,9 @@
 	return ins;
 
 error:
+	kfree(ins->modules);
+	kfree(ins->code.data);
+	vfree(ins->symbol_table.symbols);
 	kfree(ins);
 	return NULL;
 }
diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c
index 460fb2e..18af38e 100644
--- a/sound/pci/hda/patch_cirrus.c
+++ b/sound/pci/hda/patch_cirrus.c
@@ -1166,6 +1166,7 @@
 
 static struct snd_pci_quirk cs420x_cfg_tbl[] = {
 	SND_PCI_QUIRK(0x10de, 0x0ac0, "MacBookPro 5,3", CS420X_MBP53),
+	SND_PCI_QUIRK(0x10de, 0x0d94, "MacBookAir 3,1(2)", CS420X_MBP55),
 	SND_PCI_QUIRK(0x10de, 0xcb79, "MacBookPro 5,5", CS420X_MBP55),
 	SND_PCI_QUIRK(0x10de, 0xcb89, "MacBookPro 7,1", CS420X_MBP55),
 	SND_PCI_QUIRK(0x8086, 0x7270, "IMac 27 Inch", CS420X_IMAC27),
diff --git a/sound/pci/lx6464es/lx6464es.c b/sound/pci/lx6464es/lx6464es.c
index ef9af3f..1bd7a54 100644
--- a/sound/pci/lx6464es/lx6464es.c
+++ b/sound/pci/lx6464es/lx6464es.c
@@ -425,7 +425,7 @@
 static void lx_trigger_start(struct lx6464es *chip, struct lx_stream *lx_stream)
 {
 	struct snd_pcm_substream *substream = lx_stream->stream;
-	const int is_capture = lx_stream->is_capture;
+	const unsigned int is_capture = lx_stream->is_capture;
 
 	int err;
 
@@ -473,7 +473,7 @@
 
 static void lx_trigger_stop(struct lx6464es *chip, struct lx_stream *lx_stream)
 {
-	const int is_capture = lx_stream->is_capture;
+	const unsigned int is_capture = lx_stream->is_capture;
 	int err;
 
 	snd_printd(LXP "stopping: stopping stream\n");
diff --git a/sound/pci/lx6464es/lx6464es.h b/sound/pci/lx6464es/lx6464es.h
index 51afc04..aea621e 100644
--- a/sound/pci/lx6464es/lx6464es.h
+++ b/sound/pci/lx6464es/lx6464es.h
@@ -60,7 +60,7 @@
 	snd_pcm_uframes_t          frame_pos;
 	enum lx_stream_status      status; /* free, open, running, draining
 					    * pause */
-	int                        is_capture:1;
+	unsigned int               is_capture:1;
 };
 
 
diff --git a/sound/pci/lx6464es/lx_core.c b/sound/pci/lx6464es/lx_core.c
index 3086b75..617f98b 100644
--- a/sound/pci/lx6464es/lx_core.c
+++ b/sound/pci/lx6464es/lx_core.c
@@ -1152,7 +1152,7 @@
 					   struct lx_stream *lx_stream)
 {
 	struct snd_pcm_substream *substream = lx_stream->stream;
-	int is_capture = lx_stream->is_capture;
+	const unsigned int is_capture = lx_stream->is_capture;
 	int err;
 	unsigned long flags;
 
diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index 7dae05d..782f741 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -60,7 +60,7 @@
 	{ USB_ID(0x041e, 0x3000), 0, 1, 2, 1,  18, 0x0013 }, /* Extigy       */
 	{ USB_ID(0x041e, 0x3020), 2, 1, 6, 6,  18, 0x0013 }, /* Audigy 2 NX  */
 	{ USB_ID(0x041e, 0x3040), 2, 2, 6, 6,  2,  0x6e91 }, /* Live! 24-bit */
-	{ USB_ID(0x041e, 0x3042), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi */
+	{ USB_ID(0x041e, 0x3042), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 */
 	{ USB_ID(0x041e, 0x3048), 2, 2, 6, 6,  2,  0x6e91 }, /* Toshiba SB0500 */
 };
 
@@ -183,7 +183,13 @@
 	if (value > 1)
 		return -EINVAL;
 	changed = value != mixer->audigy2nx_leds[index];
-	err = snd_usb_ctl_msg(mixer->chip->dev,
+	if (mixer->chip->usb_id == USB_ID(0x041e, 0x3042))
+		err = snd_usb_ctl_msg(mixer->chip->dev,
+			      usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
+			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
+			      !value, 0, NULL, 0, 100);
+	else
+		err = snd_usb_ctl_msg(mixer->chip->dev,
 			      usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
 			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
 			      value, index + 2, NULL, 0, 100);
@@ -225,8 +231,12 @@
 	int i, err;
 
 	for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_controls); ++i) {
+		/* USB X-Fi S51 doesn't have a CMSS LED */
+		if ((mixer->chip->usb_id == USB_ID(0x041e, 0x3042)) && i == 0)
+			continue;
 		if (i > 1 && /* Live24ext has 2 LEDs only */
 			(mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
+			 mixer->chip->usb_id == USB_ID(0x041e, 0x3042) ||
 			 mixer->chip->usb_id == USB_ID(0x041e, 0x3048)))
 			break; 
 		err = snd_ctl_add(mixer->chip->card,
@@ -365,6 +375,7 @@
 
 	if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020) ||
 	    mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
+	    mixer->chip->usb_id == USB_ID(0x041e, 0x3042) ||
 	    mixer->chip->usb_id == USB_ID(0x041e, 0x3048)) {
 		if ((err = snd_audigy2nx_controls_create(mixer)) < 0)
 			return err;
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index cff3a3c..4132522 100644
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -676,8 +676,10 @@
 	if (!needs_knot)
 		return 0;
 
-	subs->rate_list.count = count;
 	subs->rate_list.list = kmalloc(sizeof(int) * count, GFP_KERNEL);
+	if (!subs->rate_list.list)
+		return -ENOMEM;
+	subs->rate_list.count = count;
 	subs->rate_list.mask = 0;
 	count = 0;
 	list_for_each_entry(fp, &subs->fmt_list, list) {