diff --git a/[refs] b/[refs]
index 8acf60769397..b304b8ffa347 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a56e16009855b2b528c36aa56b7ab8b209bb15e0
+refs/heads/master: ff0d05bf73620eb7dc8aee7423e992ef87870bdf
diff --git a/trunk/drivers/edac/edac_mc.c b/trunk/drivers/edac/edac_mc.c
index d1e9eb191f2b..281f566a5513 100644
--- a/trunk/drivers/edac/edac_mc.c
+++ b/trunk/drivers/edac/edac_mc.c
@@ -340,7 +340,7 @@ struct mem_ctl_info *edac_mc_alloc(unsigned mc_num,
 	/*
 	 * Alocate and fill the csrow/channels structs
 	 */
-	mci->csrows = kcalloc(tot_csrows, sizeof(*mci->csrows), GFP_KERNEL);
+	mci->csrows = kcalloc(sizeof(*mci->csrows), tot_csrows, GFP_KERNEL);
 	if (!mci->csrows)
 		goto error;
 	for (row = 0; row < tot_csrows; row++) {
@@ -351,7 +351,7 @@ struct mem_ctl_info *edac_mc_alloc(unsigned mc_num,
 		csr->csrow_idx = row;
 		csr->mci = mci;
 		csr->nr_channels = tot_channels;
-		csr->channels = kcalloc(tot_channels, sizeof(*csr->channels),
+		csr->channels = kcalloc(sizeof(*csr->channels), tot_channels,
 					GFP_KERNEL);
 		if (!csr->channels)
 			goto error;
@@ -369,7 +369,7 @@ struct mem_ctl_info *edac_mc_alloc(unsigned mc_num,
 	/*
 	 * Allocate and fill the dimm structs
 	 */
-	mci->dimms  = kcalloc(tot_dimms, sizeof(*mci->dimms), GFP_KERNEL);
+	mci->dimms  = kcalloc(sizeof(*mci->dimms), tot_dimms, GFP_KERNEL);
 	if (!mci->dimms)
 		goto error;
 
diff --git a/trunk/drivers/edac/edac_pci_sysfs.c b/trunk/drivers/edac/edac_pci_sysfs.c
index 0056c4dae9d5..dc6e905ee1a5 100644
--- a/trunk/drivers/edac/edac_pci_sysfs.c
+++ b/trunk/drivers/edac/edac_pci_sysfs.c
@@ -256,7 +256,7 @@ static ssize_t edac_pci_dev_store(struct kobject *kobj,
 	struct edac_pci_dev_attribute *edac_pci_dev;
 	edac_pci_dev = (struct edac_pci_dev_attribute *)attr;
 
-	if (edac_pci_dev->store)
+	if (edac_pci_dev->show)
 		return edac_pci_dev->store(edac_pci_dev->value, buffer, count);
 	return -EIO;
 }
diff --git a/trunk/kernel/printk.c b/trunk/kernel/printk.c
index 357f714ddd49..267ce780abe8 100644
--- a/trunk/kernel/printk.c
+++ b/trunk/kernel/printk.c
@@ -87,12 +87,6 @@ static DEFINE_SEMAPHORE(console_sem);
 struct console *console_drivers;
 EXPORT_SYMBOL_GPL(console_drivers);
 
-#ifdef CONFIG_LOCKDEP
-static struct lockdep_map console_lock_dep_map = {
-	.name = "console_lock"
-};
-#endif
-
 /*
  * This is used for debugging the mess that is the VT code by
  * keeping track if we have the console semaphore held. It's
@@ -1924,7 +1918,6 @@ void console_lock(void)
 		return;
 	console_locked = 1;
 	console_may_schedule = 1;
-	mutex_acquire(&console_lock_dep_map, 0, 0, _RET_IP_);
 }
 EXPORT_SYMBOL(console_lock);
 
@@ -1946,7 +1939,6 @@ int console_trylock(void)
 	}
 	console_locked = 1;
 	console_may_schedule = 0;
-	mutex_acquire(&console_lock_dep_map, 0, 1, _RET_IP_);
 	return 1;
 }
 EXPORT_SYMBOL(console_trylock);
@@ -2107,7 +2099,6 @@ void console_unlock(void)
 		local_irq_restore(flags);
 	}
 	console_locked = 0;
-	mutex_release(&console_lock_dep_map, 1, _RET_IP_);
 
 	/* Release the exclusive_console once it is used */
 	if (unlikely(exclusive_console))
diff --git a/trunk/sound/pci/hda/hda_intel.c b/trunk/sound/pci/hda/hda_intel.c
index c78286f6e5d8..0b6aebacc56b 100644
--- a/trunk/sound/pci/hda/hda_intel.c
+++ b/trunk/sound/pci/hda/hda_intel.c
@@ -656,43 +656,29 @@ static char *driver_short_names[] = {
 #define get_azx_dev(substream) (substream->runtime->private_data)
 
 #ifdef CONFIG_X86
-static void __mark_pages_wc(struct azx *chip, struct snd_dma_buffer *dmab, bool on)
+static void __mark_pages_wc(struct azx *chip, void *addr, size_t size, bool on)
 {
-	int pages;
-
 	if (azx_snoop(chip))
 		return;
-	if (!dmab || !dmab->area || !dmab->bytes)
-		return;
-
-#ifdef CONFIG_SND_DMA_SGBUF
-	if (dmab->dev.type == SNDRV_DMA_TYPE_DEV_SG) {
-		struct snd_sg_buf *sgbuf = dmab->private_data;
+	if (addr && size) {
+		int pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
 		if (on)
-			set_pages_array_wc(sgbuf->page_table, sgbuf->pages);
+			set_memory_wc((unsigned long)addr, pages);
 		else
-			set_pages_array_wb(sgbuf->page_table, sgbuf->pages);
-		return;
+			set_memory_wb((unsigned long)addr, pages);
 	}
-#endif
-
-	pages = (dmab->bytes + PAGE_SIZE - 1) >> PAGE_SHIFT;
-	if (on)
-		set_memory_wc((unsigned long)dmab->area, pages);
-	else
-		set_memory_wb((unsigned long)dmab->area, pages);
 }
 
 static inline void mark_pages_wc(struct azx *chip, struct snd_dma_buffer *buf,
 				 bool on)
 {
-	__mark_pages_wc(chip, buf, on);
+	__mark_pages_wc(chip, buf->area, buf->bytes, on);
 }
 static inline void mark_runtime_wc(struct azx *chip, struct azx_dev *azx_dev,
-				   struct snd_pcm_substream *substream, bool on)
+				   struct snd_pcm_runtime *runtime, bool on)
 {
 	if (azx_dev->wc_marked != on) {
-		__mark_pages_wc(chip, snd_pcm_get_dma_buf(substream), on);
+		__mark_pages_wc(chip, runtime->dma_area, runtime->dma_bytes, on);
 		azx_dev->wc_marked = on;
 	}
 }
@@ -703,7 +689,7 @@ static inline void mark_pages_wc(struct azx *chip, struct snd_dma_buffer *buf,
 {
 }
 static inline void mark_runtime_wc(struct azx *chip, struct azx_dev *azx_dev,
-				   struct snd_pcm_substream *substream, bool on)
+				   struct snd_pcm_runtime *runtime, bool on)
 {
 }
 #endif
@@ -1982,10 +1968,11 @@ static int azx_pcm_hw_params(struct snd_pcm_substream *substream,
 {
 	struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
 	struct azx *chip = apcm->chip;
+	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct azx_dev *azx_dev = get_azx_dev(substream);
 	int ret;
 
-	mark_runtime_wc(chip, azx_dev, substream, false);
+	mark_runtime_wc(chip, azx_dev, runtime, false);
 	azx_dev->bufsize = 0;
 	azx_dev->period_bytes = 0;
 	azx_dev->format_val = 0;
@@ -1993,7 +1980,7 @@ static int azx_pcm_hw_params(struct snd_pcm_substream *substream,
 					params_buffer_bytes(hw_params));
 	if (ret < 0)
 		return ret;
-	mark_runtime_wc(chip, azx_dev, substream, true);
+	mark_runtime_wc(chip, azx_dev, runtime, true);
 	return ret;
 }
 
@@ -2002,6 +1989,7 @@ static int azx_pcm_hw_free(struct snd_pcm_substream *substream)
 	struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
 	struct azx_dev *azx_dev = get_azx_dev(substream);
 	struct azx *chip = apcm->chip;
+	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct hda_pcm_stream *hinfo = apcm->hinfo[substream->stream];
 
 	/* reset BDL address */
@@ -2014,7 +2002,7 @@ static int azx_pcm_hw_free(struct snd_pcm_substream *substream)
 
 	snd_hda_codec_cleanup(apcm->codec, hinfo, substream);
 
-	mark_runtime_wc(chip, azx_dev, substream, false);
+	mark_runtime_wc(chip, azx_dev, runtime, false);
 	return snd_pcm_lib_free_pages(substream);
 }
 
@@ -3625,12 +3613,13 @@ static DEFINE_PCI_DEVICE_TABLE(azx_ids) = {
 	/* 5 Series/3400 */
 	{ PCI_DEVICE(0x8086, 0x3b56),
 	  .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH },
-	/* Poulsbo */
+	/* SCH */
 	{ PCI_DEVICE(0x8086, 0x811b),
-	  .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_NOPM },
-	/* Oaktrail */
+	  .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_SCH_SNOOP |
+	  AZX_DCAPS_BUFSIZE | AZX_DCAPS_POSFIX_LPIB }, /* Poulsbo */
 	{ PCI_DEVICE(0x8086, 0x080a),
-	  .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_NOPM },
+	  .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_SCH_SNOOP |
+	  AZX_DCAPS_BUFSIZE | AZX_DCAPS_POSFIX_LPIB }, /* Oaktrail */
 	/* ICH */
 	{ PCI_DEVICE(0x8086, 0x2668),
 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC |
diff --git a/trunk/sound/pci/hda/patch_realtek.c b/trunk/sound/pci/hda/patch_realtek.c
index 5faaad219a7f..cf3886171109 100644
--- a/trunk/sound/pci/hda/patch_realtek.c
+++ b/trunk/sound/pci/hda/patch_realtek.c
@@ -4694,7 +4694,6 @@ static const struct snd_pci_quirk alc880_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x1584, 0x9077, "Uniwill P53", ALC880_FIXUP_VOL_KNOB),
 	SND_PCI_QUIRK(0x161f, 0x203d, "W810", ALC880_FIXUP_W810),
 	SND_PCI_QUIRK(0x161f, 0x205d, "Medion Rim 2150", ALC880_FIXUP_MEDION_RIM),
-	SND_PCI_QUIRK(0x1631, 0xe011, "PB 13201056", ALC880_FIXUP_6ST),
 	SND_PCI_QUIRK(0x1734, 0x107c, "FSC F1734", ALC880_FIXUP_F1734),
 	SND_PCI_QUIRK(0x1734, 0x1094, "FSC Amilo M1451G", ALC880_FIXUP_FUJITSU),
 	SND_PCI_QUIRK(0x1734, 0x10ac, "FSC AMILO Xi 1526", ALC880_FIXUP_F1734),
@@ -5709,7 +5708,6 @@ static const struct alc_model_fixup alc268_fixup_models[] = {
 };
 
 static const struct snd_pci_quirk alc268_fixup_tbl[] = {
-	SND_PCI_QUIRK(0x1025, 0x015b, "Acer AOA 150 (ZG5)", ALC268_FIXUP_INV_DMIC),
 	/* below is codec SSID since multiple Toshiba laptops have the
 	 * same PCI SSID 1179:ff00
 	 */
diff --git a/trunk/sound/soc/codecs/arizona.c b/trunk/sound/soc/codecs/arizona.c
index ef62c435848e..1d8bb5917594 100644
--- a/trunk/sound/soc/codecs/arizona.c
+++ b/trunk/sound/soc/codecs/arizona.c
@@ -685,7 +685,7 @@ static int arizona_hw_params(struct snd_pcm_substream *substream,
 	}
 	sr_val = i;
 
-	lrclk = rates[bclk] / params_rate(params);
+	lrclk = snd_soc_params_to_bclk(params) / params_rate(params);
 
 	arizona_aif_dbg(dai, "BCLK %dHz LRCLK %dHz\n",
 			rates[bclk], rates[bclk] / lrclk);
@@ -1082,9 +1082,6 @@ int arizona_init_fll(struct arizona *arizona, int id, int base, int lock_irq,
 			id, ret);
 	}
 
-	regmap_update_bits(arizona->regmap, fll->base + 1,
-			   ARIZONA_FLL1_FREERUN, 0);
-
 	return 0;
 }
 EXPORT_SYMBOL_GPL(arizona_init_fll);
diff --git a/trunk/sound/soc/codecs/wm2200.c b/trunk/sound/soc/codecs/wm2200.c
index d8c65f574658..e6cefe1ac677 100644
--- a/trunk/sound/soc/codecs/wm2200.c
+++ b/trunk/sound/soc/codecs/wm2200.c
@@ -1019,6 +1019,8 @@ static const char *wm2200_mixer_texts[] = {
 	"EQR",
 	"LHPF1",
 	"LHPF2",
+	"LHPF3",
+	"LHPF4",
 	"DSP1.1",
 	"DSP1.2",
 	"DSP1.3",
@@ -1051,6 +1053,7 @@ static int wm2200_mixer_values[] = {
 	0x25,
 	0x50,   /* EQ */
 	0x51,
+	0x52,
 	0x60,   /* LHPF1 */
 	0x61,   /* LHPF2 */
 	0x68,   /* DSP1 */
diff --git a/trunk/sound/soc/codecs/wm5102.c b/trunk/sound/soc/codecs/wm5102.c
index 1440b3f9b7bb..7a9048dad1cd 100644
--- a/trunk/sound/soc/codecs/wm5102.c
+++ b/trunk/sound/soc/codecs/wm5102.c
@@ -896,7 +896,8 @@ static const unsigned int wm5102_aec_loopback_values[] = {
 
 static const struct soc_enum wm5102_aec_loopback =
 	SOC_VALUE_ENUM_SINGLE(ARIZONA_DAC_AEC_CONTROL_1,
-			      ARIZONA_AEC_LOOPBACK_SRC_SHIFT, 0xf,
+			      ARIZONA_AEC_LOOPBACK_SRC_SHIFT,
+			      ARIZONA_AEC_LOOPBACK_SRC_MASK,
 			      ARRAY_SIZE(wm5102_aec_loopback_texts),
 			      wm5102_aec_loopback_texts,
 			      wm5102_aec_loopback_values);
diff --git a/trunk/sound/soc/codecs/wm5110.c b/trunk/sound/soc/codecs/wm5110.c
index 7a090968c4f7..ae80c8c28536 100644
--- a/trunk/sound/soc/codecs/wm5110.c
+++ b/trunk/sound/soc/codecs/wm5110.c
@@ -344,7 +344,8 @@ static const unsigned int wm5110_aec_loopback_values[] = {
 
 static const struct soc_enum wm5110_aec_loopback =
 	SOC_VALUE_ENUM_SINGLE(ARIZONA_DAC_AEC_CONTROL_1,
-			      ARIZONA_AEC_LOOPBACK_SRC_SHIFT, 0xf,
+			      ARIZONA_AEC_LOOPBACK_SRC_SHIFT,
+			      ARIZONA_AEC_LOOPBACK_SRC_MASK,
 			      ARRAY_SIZE(wm5110_aec_loopback_texts),
 			      wm5110_aec_loopback_texts,
 			      wm5110_aec_loopback_values);
diff --git a/trunk/sound/soc/codecs/wm_adsp.c b/trunk/sound/soc/codecs/wm_adsp.c
index b6b654837585..7b198c38f3ef 100644
--- a/trunk/sound/soc/codecs/wm_adsp.c
+++ b/trunk/sound/soc/codecs/wm_adsp.c
@@ -324,7 +324,7 @@ static int wm_adsp_load(struct wm_adsp *dsp)
 
 		if (reg) {
 			buf = kmemdup(region->data, le32_to_cpu(region->len),
-				      GFP_KERNEL | GFP_DMA);
+				      GFP_KERNEL);
 			if (!buf) {
 				adsp_err(dsp, "Out of memory\n");
 				return -ENOMEM;
@@ -396,7 +396,7 @@ static int wm_adsp_load_coeff(struct wm_adsp *dsp)
 	hdr = (void*)&firmware->data[0];
 	if (memcmp(hdr->magic, "WMDR", 4) != 0) {
 		adsp_err(dsp, "%s: invalid magic\n", file);
-		goto out_fw;
+		return -EINVAL;
 	}
 
 	adsp_dbg(dsp, "%s: v%d.%d.%d\n", file,
@@ -439,7 +439,7 @@ static int wm_adsp_load_coeff(struct wm_adsp *dsp)
 
 		if (reg) {
 			buf = kmemdup(blk->data, le32_to_cpu(blk->len),
-				      GFP_KERNEL | GFP_DMA);
+				      GFP_KERNEL);
 			if (!buf) {
 				adsp_err(dsp, "Out of memory\n");
 				return -ENOMEM;
diff --git a/trunk/sound/soc/fsl/Kconfig b/trunk/sound/soc/fsl/Kconfig
index a210c8d7b4bc..3b98159d9645 100644
--- a/trunk/sound/soc/fsl/Kconfig
+++ b/trunk/sound/soc/fsl/Kconfig
@@ -108,13 +108,18 @@ if SND_IMX_SOC
 config SND_SOC_IMX_SSI
 	tristate
 
-config SND_SOC_IMX_PCM_FIQ
+config SND_SOC_IMX_PCM
 	tristate
+
+config SND_SOC_IMX_PCM_FIQ
+	bool
 	select FIQ
+	select SND_SOC_IMX_PCM
 
 config SND_SOC_IMX_PCM_DMA
-	tristate
+	bool
 	select SND_SOC_DMAENGINE_PCM
+	select SND_SOC_IMX_PCM
 
 config SND_SOC_IMX_AUDMUX
 	tristate
diff --git a/trunk/sound/soc/fsl/Makefile b/trunk/sound/soc/fsl/Makefile
index ec1457915d7c..afd34794db53 100644
--- a/trunk/sound/soc/fsl/Makefile
+++ b/trunk/sound/soc/fsl/Makefile
@@ -41,10 +41,7 @@ endif
 obj-$(CONFIG_SND_SOC_IMX_SSI) += snd-soc-imx-ssi.o
 obj-$(CONFIG_SND_SOC_IMX_AUDMUX) += snd-soc-imx-audmux.o
 
-obj-$(CONFIG_SND_SOC_IMX_PCM_FIQ) += snd-soc-imx-pcm-fiq.o
-snd-soc-imx-pcm-fiq-y := imx-pcm-fiq.o imx-pcm.o
-obj-$(CONFIG_SND_SOC_IMX_PCM_DMA) += snd-soc-imx-pcm-dma.o
-snd-soc-imx-pcm-dma-y := imx-pcm-dma.o imx-pcm.o
+obj-$(CONFIG_SND_SOC_IMX_PCM) += snd-soc-imx-pcm.o
 
 # i.MX Machine Support
 snd-soc-eukrea-tlv320-objs := eukrea-tlv320.o
diff --git a/trunk/sound/soc/fsl/imx-pcm.c b/trunk/sound/soc/fsl/imx-pcm.c
index 0c9f188ddc68..d5cd9eff3b48 100644
--- a/trunk/sound/soc/fsl/imx-pcm.c
+++ b/trunk/sound/soc/fsl/imx-pcm.c
@@ -31,6 +31,7 @@ int snd_imx_pcm_mmap(struct snd_pcm_substream *substream,
 			runtime->dma_bytes);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(snd_imx_pcm_mmap);
 
 static int imx_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream)
 {
@@ -79,6 +80,7 @@ int imx_pcm_new(struct snd_soc_pcm_runtime *rtd)
 out:
 	return ret;
 }
+EXPORT_SYMBOL_GPL(imx_pcm_new);
 
 void imx_pcm_free(struct snd_pcm *pcm)
 {
@@ -100,6 +102,7 @@ void imx_pcm_free(struct snd_pcm *pcm)
 		buf->area = NULL;
 	}
 }
+EXPORT_SYMBOL_GPL(imx_pcm_free);
 
 MODULE_DESCRIPTION("Freescale i.MX PCM driver");
 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
diff --git a/trunk/sound/soc/soc-dapm.c b/trunk/sound/soc/soc-dapm.c
index 258acadb9e7d..1e36bc81e5af 100644
--- a/trunk/sound/soc/soc-dapm.c
+++ b/trunk/sound/soc/soc-dapm.c
@@ -1023,7 +1023,7 @@ int dapm_regulator_event(struct snd_soc_dapm_widget *w,
 
 	if (SND_SOC_DAPM_EVENT_ON(event)) {
 		if (w->invert & SND_SOC_DAPM_REGULATOR_BYPASS) {
-			ret = regulator_allow_bypass(w->regulator, false);
+			ret = regulator_allow_bypass(w->regulator, true);
 			if (ret != 0)
 				dev_warn(w->dapm->dev,
 					 "ASoC: Failed to bypass %s: %d\n",
@@ -1033,7 +1033,7 @@ int dapm_regulator_event(struct snd_soc_dapm_widget *w,
 		return regulator_enable(w->regulator);
 	} else {
 		if (w->invert & SND_SOC_DAPM_REGULATOR_BYPASS) {
-			ret = regulator_allow_bypass(w->regulator, true);
+			ret = regulator_allow_bypass(w->regulator, false);
 			if (ret != 0)
 				dev_warn(w->dapm->dev,
 					 "ASoC: Failed to unbypass %s: %d\n",
@@ -3039,14 +3039,6 @@ snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
 				w->name, ret);
 			return NULL;
 		}
-
-		if (w->invert & SND_SOC_DAPM_REGULATOR_BYPASS) {
-			ret = regulator_allow_bypass(w->regulator, true);
-			if (ret != 0)
-				dev_warn(w->dapm->dev,
-					 "ASoC: Failed to unbypass %s: %d\n",
-					 w->name, ret);
-		}
 		break;
 	case snd_soc_dapm_clock_supply:
 #ifdef CONFIG_CLKDEV_LOOKUP
diff --git a/trunk/sound/usb/mixer.c b/trunk/sound/usb/mixer.c
index e90daf8cdaa8..ed4d89c8b52a 100644
--- a/trunk/sound/usb/mixer.c
+++ b/trunk/sound/usb/mixer.c
@@ -1331,23 +1331,16 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void
 		}
 		channels = (hdr->bLength - 7) / csize - 1;
 		bmaControls = hdr->bmaControls;
-		if (hdr->bLength < 7 + csize) {
-			snd_printk(KERN_ERR "usbaudio: unit %u: "
-				   "invalid UAC_FEATURE_UNIT descriptor\n",
-				   unitid);
-			return -EINVAL;
-		}
 	} else {
 		struct uac2_feature_unit_descriptor *ftr = _ftr;
 		csize = 4;
 		channels = (hdr->bLength - 6) / 4 - 1;
 		bmaControls = ftr->bmaControls;
-		if (hdr->bLength < 6 + csize) {
-			snd_printk(KERN_ERR "usbaudio: unit %u: "
-				   "invalid UAC_FEATURE_UNIT descriptor\n",
-				   unitid);
-			return -EINVAL;
-		}
+	}
+
+	if (hdr->bLength < 7 || !csize || hdr->bLength < 7 + csize) {
+		snd_printk(KERN_ERR "usbaudio: unit %u: invalid UAC_FEATURE_UNIT descriptor\n", unitid);
+		return -EINVAL;
 	}
 
 	/* parse the source unit */