Merge branch 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm

* 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: 6994/1: smp_twd: Fix typo in 'twd_timer_rate' printing
  ARM: 6987/1: l2x0: fix disabling function to avoid deadlock
  ARM: 6966/1: ep93xx: fix inverted RTS/DTR signals on uart1
  ARM: 6980/1: mmci: use StartBitErr to detect bad connections
  ARM: 6979/1: mach-vt8500: add forgotten irq_data conversion
  ARM: move memory layout sanity checking before meminfo initialization
  ARM: 6990/1: MAINTAINERS: add entry for ARM PMU profiling and debugging
  ARM: 6989/1: perf: do not start the PMU when no events are present
  ARM: dmabounce: fix map_single() error return value

MAINTAINERS

@@ -594,6 +594,16 @@ S:	Maintained
 F:	arch/arm/lib/floppydma.S
 F:	arch/arm/include/asm/floppy.h
 
+ARM PMU PROFILING AND DEBUGGING
+M:	Will Deacon <will.deacon@arm.com>
+S:	Maintained
+F:	arch/arm/kernel/perf_event*
+F:	arch/arm/oprofile/common.c
+F:	arch/arm/kernel/pmu.c
+F:	arch/arm/include/asm/pmu.h
+F:	arch/arm/kernel/hw_breakpoint.c
+F:	arch/arm/include/asm/hw_breakpoint.h
+
 ARM PORT
 M:	Russell King <linux@arm.linux.org.uk>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)

arch/arm/common/dmabounce.c

@@ -255,7 +255,7 @@ static inline dma_addr_t map_single(struct device *dev, void *ptr, size_t size,
 		if (buf == 0) {
 			dev_err(dev, "%s: unable to map unsafe buffer %p!\n",
 			       __func__, ptr);
-			return 0;
+			return ~0;
 		}
 
 		dev_dbg(dev,

arch/arm/kernel/perf_event.c

@@ -583,7 +583,7 @@ static int armpmu_event_init(struct perf_event *event)
 static void armpmu_enable(struct pmu *pmu)
 {
 	/* Enable all of the perf events on hardware. */
-	int idx;
+	int idx, enabled = 0;
 	struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
 
 	if (!armpmu)
@@ -596,8 +596,10 @@ static void armpmu_enable(struct pmu *pmu)
 			continue;
 
 		armpmu->enable(&event->hw, idx);
+		enabled = 1;
 	}
 
+	if (enabled)
 		armpmu->start();
 }
 

arch/arm/kernel/setup.c

@@ -73,6 +73,7 @@ __setup("fpe=", fpe_setup);
 #endif
 
 extern void paging_init(struct machine_desc *desc);
+extern void sanity_check_meminfo(void);
 extern void reboot_setup(char *str);
 
 unsigned int processor_id;
@@ -900,6 +901,7 @@ void __init setup_arch(char **cmdline_p)
 
 	parse_early_param();
 
+	sanity_check_meminfo();
 	arm_memblock_init(&meminfo, mdesc);
 
 	paging_init(mdesc);

arch/arm/kernel/smp_twd.c

@@ -115,7 +115,7 @@ static void __cpuinit twd_calibrate_rate(void)
 		twd_timer_rate = (0xFFFFFFFFU - count) * (HZ / 5);
 
 		printk("%lu.%02luMHz.\n", twd_timer_rate / 1000000,
-			(twd_timer_rate / 1000000) % 100);
+			(twd_timer_rate / 10000) % 100);
 	}
 }
 

arch/arm/mach-ep93xx/core.c

@@ -251,9 +251,9 @@ static void ep93xx_uart_set_mctrl(struct amba_device *dev,
 	unsigned int mcr;
 
 	mcr = 0;
-	if (!(mctrl & TIOCM_RTS))
+	if (mctrl & TIOCM_RTS)
 		mcr |= 2;
-	if (!(mctrl & TIOCM_DTR))
+	if (mctrl & TIOCM_DTR)
 		mcr |= 1;
 
 	__raw_writel(mcr, base + EP93XX_UART_MCR_OFFSET);

arch/arm/mach-vt8500/irq.c

@@ -39,9 +39,10 @@
 static void __iomem *ic_regbase;
 static void __iomem *sic_regbase;
 
-static void vt8500_irq_mask(unsigned int irq)
+static void vt8500_irq_mask(struct irq_data *d)
 {
 	void __iomem *base = ic_regbase;
+	unsigned irq = d->irq;
 	u8 edge;
 
 	if (irq >= 64) {
@@ -64,9 +65,10 @@ static void vt8500_irq_mask(unsigned int irq)
 	}
 }
 
-static void vt8500_irq_unmask(unsigned int irq)
+static void vt8500_irq_unmask(struct irq_data *d)
 {
 	void __iomem *base = ic_regbase;
+	unsigned irq = d->irq;
 	u8 dctr;
 
 	if (irq >= 64) {
@@ -78,10 +80,11 @@ static void vt8500_irq_unmask(unsigned int irq)
 	writeb(dctr, base + VT8500_IC_DCTR + irq);
 }
 
-static int vt8500_irq_set_type(unsigned int irq, unsigned int flow_type)
+static int vt8500_irq_set_type(struct irq_data *d, unsigned int flow_type)
 {
 	void __iomem *base = ic_regbase;
-	unsigned int orig_irq = irq;
+	unsigned irq = d->irq;
+	unsigned orig_irq = irq;
 	u8 dctr;
 
 	if (irq >= 64) {
@@ -115,10 +118,10 @@ static int vt8500_irq_set_type(unsigned int irq, unsigned int flow_type)
 
 static struct irq_chip vt8500_irq_chip = {
 	.name = "vt8500",
-	.ack       = vt8500_irq_mask,
-	.mask      = vt8500_irq_mask,
-	.unmask    = vt8500_irq_unmask,
-	.set_type  = vt8500_irq_set_type,
+	.irq_ack = vt8500_irq_mask,
+	.irq_mask = vt8500_irq_mask,
+	.irq_unmask = vt8500_irq_unmask,
+	.irq_set_type = vt8500_irq_set_type,
 };
 
 void __init vt8500_init_irq(void)

arch/arm/mm/cache-l2x0.c

@@ -120,17 +120,22 @@ static void l2x0_cache_sync(void)
 	spin_unlock_irqrestore(&l2x0_lock, flags);
 }
 
-static void l2x0_flush_all(void)
+static void __l2x0_flush_all(void)
 {
-	unsigned long flags;
-
-	/* clean all ways */
-	spin_lock_irqsave(&l2x0_lock, flags);
 	debug_writel(0x03);
 	writel_relaxed(l2x0_way_mask, l2x0_base + L2X0_CLEAN_INV_WAY);
 	cache_wait_way(l2x0_base + L2X0_CLEAN_INV_WAY, l2x0_way_mask);
 	cache_sync();
 	debug_writel(0x00);
+}
+
+static void l2x0_flush_all(void)
+{
+	unsigned long flags;
+
+	/* clean all ways */
+	spin_lock_irqsave(&l2x0_lock, flags);
+	__l2x0_flush_all();
 	spin_unlock_irqrestore(&l2x0_lock, flags);
 }
 
@@ -266,7 +271,9 @@ static void l2x0_disable(void)
 	unsigned long flags;
 
 	spin_lock_irqsave(&l2x0_lock, flags);
-	writel(0, l2x0_base + L2X0_CTRL);
+	__l2x0_flush_all();
+	writel_relaxed(0, l2x0_base + L2X0_CTRL);
+	dsb();
 	spin_unlock_irqrestore(&l2x0_lock, flags);
 }
 

arch/arm/mm/mmu.c

@@ -759,7 +759,7 @@ early_param("vmalloc", early_vmalloc);
 
 static phys_addr_t lowmem_limit __initdata = 0;
 
-static void __init sanity_check_meminfo(void)
+void __init sanity_check_meminfo(void)
 {
 	int i, j, highmem = 0;
 
@@ -1032,8 +1032,9 @@ void __init paging_init(struct machine_desc *mdesc)
 {
 	void *zero_page;
 
+	memblock_set_current_limit(lowmem_limit);
+
 	build_mem_type_table();
-	sanity_check_meminfo();
 	prepare_page_table();
 	map_lowmem();
 	devicemaps_init(mdesc);

arch/arm/mm/nommu.c

@@ -27,6 +27,10 @@ void __init arm_mm_memblock_reserve(void)
 	memblock_reserve(CONFIG_VECTORS_BASE, PAGE_SIZE);
 }
 
+void __init sanity_check_meminfo(void)
+{
+}
+
 /*
  * paging_init() sets up the page tables, initialises the zone memory
  * maps, and sets up the zero page, bad page and bad page tables.

drivers/mmc/host/mmci.c

@@ -582,6 +582,8 @@ mmci_data_irq(struct mmci_host *host, struct mmc_data *data,
 			data->error = -EILSEQ;
 		} else if (status & MCI_DATATIMEOUT) {
 			data->error = -ETIMEDOUT;
+		} else if (status & MCI_STARTBITERR) {
+			data->error = -ECOMM;
 		} else if (status & MCI_TXUNDERRUN) {
 			data->error = -EIO;
 		} else if (status & MCI_RXOVERRUN) {

drivers/mmc/host/mmci.h

@@ -86,6 +86,7 @@
 #define MCI_CMDRESPEND		(1 << 6)
 #define MCI_CMDSENT		(1 << 7)
 #define MCI_DATAEND		(1 << 8)
+#define MCI_STARTBITERR		(1 << 9)
 #define MCI_DATABLOCKEND	(1 << 10)
 #define MCI_CMDACTIVE		(1 << 11)
 #define MCI_TXACTIVE		(1 << 12)
@@ -112,6 +113,7 @@
 #define MCI_CMDRESPENDCLR	(1 << 6)
 #define MCI_CMDSENTCLR		(1 << 7)
 #define MCI_DATAENDCLR		(1 << 8)
+#define MCI_STARTBITERRCLR	(1 << 9)
 #define MCI_DATABLOCKENDCLR	(1 << 10)
 /* Extended status bits for the ST Micro variants */
 #define MCI_ST_SDIOITC		(1 << 22)
@@ -127,6 +129,7 @@
 #define MCI_CMDRESPENDMASK	(1 << 6)
 #define MCI_CMDSENTMASK		(1 << 7)
 #define MCI_DATAENDMASK		(1 << 8)
+#define MCI_STARTBITERRMASK	(1 << 9)
 #define MCI_DATABLOCKENDMASK	(1 << 10)
 #define MCI_CMDACTIVEMASK	(1 << 11)
 #define MCI_TXACTIVEMASK	(1 << 12)
@@ -150,7 +153,7 @@
 #define MCI_IRQENABLE	\
 	(MCI_CMDCRCFAILMASK|MCI_DATACRCFAILMASK|MCI_CMDTIMEOUTMASK|	\
 	MCI_DATATIMEOUTMASK|MCI_TXUNDERRUNMASK|MCI_RXOVERRUNMASK|	\
-	MCI_CMDRESPENDMASK|MCI_CMDSENTMASK)
+	MCI_CMDRESPENDMASK|MCI_CMDSENTMASK|MCI_STARTBITERRMASK)
 
 /* These interrupts are directed to IRQ1 when two IRQ lines are available */
 #define MCI_IRQ1MASK \