Index: uspace/drv/audio/sb16/dsp.c
===================================================================
--- uspace/drv/audio/sb16/dsp.c	(revision 3f74275b545272926eb993b683eae30e42326ab4)
+++ uspace/drv/audio/sb16/dsp.c	(revision 05b5939308a029a5f557f811dd067aa545547cf8)
@@ -75,5 +75,5 @@
 		[DSP_NO_BUFFER] = "NO BUFFER",
 	};
-	if (state < ARRAY_SIZE(state_names))
+	if ((size_t)state < ARRAY_SIZE(state_names))
 		return state_names[state];
 	return "UNKNOWN";
@@ -144,7 +144,9 @@
 {
 	dsp_write(dsp, SET_SAMPLING_RATE_OUTPUT);
-	dsp_write(dsp, rate >> 8);
-	dsp_write(dsp, rate & 0xff);
-	ddf_log_verbose("Sampling rate: %hhx:%hhx.", rate >> 8, rate & 0xff);
+	uint8_t rate_lo = rate & 0xff;
+	uint8_t rate_hi = rate >> 8;
+	dsp_write(dsp, rate_hi);
+	dsp_write(dsp, rate_lo);
+	ddf_log_verbose("Sampling rate: %hhx:%hhx.", rate_hi, rate_lo);
 }
 
@@ -202,9 +204,4 @@
 	
 	return ret;
-}
-
-static inline size_t sample_count(pcm_sample_format_t format, size_t byte_count)
-{
-	return byte_count / pcm_sample_format_size(format);
 }
 
Index: uspace/drv/bus/isa/i8237.c
===================================================================
--- uspace/drv/bus/isa/i8237.c	(revision 3f74275b545272926eb993b683eae30e42326ab4)
+++ uspace/drv/bus/isa/i8237.c	(revision 05b5939308a029a5f557f811dd067aa545547cf8)
@@ -371,5 +371,5 @@
 	
 	/* 16 bit transfers are a bit special */
-	ddf_msg(LVL_DEBUG, "Unspoiled address %#" PRIx32 " (size %" PRIu16 ")",
+	ddf_msg(LVL_DEBUG, "Unspoiled address %#" PRIx32 " (size %" PRIu32 ")",
 	    pa, size);
 	if (is_dma16(channel)) {
@@ -388,5 +388,5 @@
 	
 	ddf_msg(LVL_DEBUG, "Setting channel %u to address %#" PRIx32 " "
-	    "(size %" PRIu16 "), mode %hhx.", channel, pa, size, mode);
+	    "(size %" PRIu32 "), mode %hhx.", channel, pa, size, mode);
 	
 	/* Mask DMA request */
Index: uspace/drv/bus/usb/ohci/ohci_rh.c
===================================================================
--- uspace/drv/bus/usb/ohci/ohci_rh.c	(revision 3f74275b545272926eb993b683eae30e42326ab4)
+++ uspace/drv/bus/usb/ohci/ohci_rh.c	(revision 05b5939308a029a5f557f811dd067aa545547cf8)
@@ -367,5 +367,5 @@
 	case USB_HUB_FEATURE_C_PORT_RESET:        /*20*/
 		usb_log_debug2("Clearing port C_CONNECTION, C_ENABLE, "
-		    "C_SUSPEND, C_OC or C_RESET on port %"PRIu16".\n", port);
+		    "C_SUSPEND, C_OC or C_RESET on port %u.\n", port);
 		/* Bit offsets correspond to the feature number */
 		OHCI_WR(hub->registers->rh_port_status[port],
@@ -416,5 +416,5 @@
 	case USB_HUB_FEATURE_PORT_RESET:   /*4*/
 		usb_log_debug2("Setting port POWER, ENABLE, SUSPEND or RESET "
-		    "on port %"PRIu16".\n", port);
+		    "on port %u.\n", port);
 		/* Bit offsets correspond to the feature number */
 		OHCI_WR(hub->registers->rh_port_status[port], 1 << feature);
Index: uspace/drv/fb/amdm37x_dispc/amdm37x_dispc.c
===================================================================
--- uspace/drv/fb/amdm37x_dispc/amdm37x_dispc.c	(revision 3f74275b545272926eb993b683eae30e42326ab4)
+++ uspace/drv/fb/amdm37x_dispc/amdm37x_dispc.c	(revision 05b5939308a029a5f557f811dd067aa545547cf8)
@@ -267,5 +267,5 @@
 	amdm37x_dispc_t *dispc = vis->dev_ctx;
 	const visual_t visual = mode.cell_visual.pixel_visual;
-	assert(visual < sizeof(pixel2visual_table) / sizeof(pixel2visual_table[0]));
+	assert((size_t)visual < sizeof(pixel2visual_table) / sizeof(pixel2visual_table[0]));
 	const unsigned bpp = pixel2visual_table[visual].bpp;
 	pixel2visual_t p2v = pixel2visual_table[visual].func;