These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

9 files changed, 25 insertions, 101 deletions

diff --git a/kernel/arch/unicore32/Kconfig b/kernel/arch/unicore32/Kconfig
index 928237a7b..c9faddc61 100644
--- a/kernel/arch/unicore32/Kconfig
+++ b/kernel/arch/unicore32/Kconfig
@@ -222,7 +222,7 @@ config I2C_BATTERY_BQ27200
 	tristate "I2C Battery BQ27200 Support"
 	select I2C_PUV3
 	select POWER_SUPPLY
-	select BATTERY_BQ27x00
+	select BATTERY_BQ27XXX
 
 config I2C_EEPROM_AT24
 	tristate "I2C EEPROMs AT24 support"
diff --git a/kernel/arch/unicore32/include/asm/Kbuild b/kernel/arch/unicore32/include/asm/Kbuild
index 3e0c19d0f..256c45b3a 100644
--- a/kernel/arch/unicore32/include/asm/Kbuild
+++ b/kernel/arch/unicore32/include/asm/Kbuild
@@ -26,6 +26,7 @@ generic-y += kdebug.h
 generic-y += kmap_types.h
 generic-y += local.h
 generic-y += mcs_spinlock.h
+generic-y += mm-arch-hooks.h
 generic-y += mman.h
 generic-y += module.h
 generic-y += msgbuf.h
@@ -36,7 +37,6 @@ generic-y += poll.h
 generic-y += posix_types.h
 generic-y += preempt.h
 generic-y += resource.h
-generic-y += scatterlist.h
 generic-y += sections.h
 generic-y += segment.h
 generic-y += sembuf.h
@@ -62,4 +62,5 @@ generic-y += ucontext.h
 generic-y += unaligned.h
 generic-y += user.h
 generic-y += vga.h
+generic-y += word-at-a-time.h
 generic-y += xor.h
diff --git a/kernel/arch/unicore32/include/asm/dma-mapping.h b/kernel/arch/unicore32/include/asm/dma-mapping.h
index 366460a81..8140e053c 100644
--- a/kernel/arch/unicore32/include/asm/dma-mapping.h
+++ b/kernel/arch/unicore32/include/asm/dma-mapping.h
@@ -18,8 +18,6 @@
 #include <linux/scatterlist.h>
 #include <linux/swiotlb.h>
 
-#include <asm-generic/dma-coherent.h>
-
 #include <asm/memory.h>
 #include <asm/cacheflush.h>
 
@@ -30,26 +28,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
 	return &swiotlb_dma_map_ops;
 }
 
-static inline int dma_supported(struct device *dev, u64 mask)
-{
-	struct dma_map_ops *dma_ops = get_dma_ops(dev);
-
-	if (unlikely(dma_ops == NULL))
-		return 0;
-
-	return dma_ops->dma_supported(dev, mask);
-}
-
-static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
-	struct dma_map_ops *dma_ops = get_dma_ops(dev);
-
-	if (dma_ops->mapping_error)
-		return dma_ops->mapping_error(dev, dma_addr);
-
-	return 0;
-}
-
 #include <asm-generic/dma-mapping-common.h>
 
 static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
@@ -72,41 +50,6 @@ static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr)
 
 static inline void dma_mark_clean(void *addr, size_t size) {}
 
-static inline int dma_set_mask(struct device *dev, u64 dma_mask)
-{
-	if (!dev->dma_mask || !dma_supported(dev, dma_mask))
-		return -EIO;
-
-	*dev->dma_mask = dma_mask;
-
-	return 0;
-}
-
-#define dma_alloc_coherent(d,s,h,f)	dma_alloc_attrs(d,s,h,f,NULL)
-
-static inline void *dma_alloc_attrs(struct device *dev, size_t size,
-				    dma_addr_t *dma_handle, gfp_t flag,
-				    struct dma_attrs *attrs)
-{
-	struct dma_map_ops *dma_ops = get_dma_ops(dev);
-
-	return dma_ops->alloc(dev, size, dma_handle, flag, attrs);
-}
-
-#define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL)
-
-static inline void dma_free_attrs(struct device *dev, size_t size,
-				  void *cpu_addr, dma_addr_t dma_handle,
-				  struct dma_attrs *attrs)
-{
-	struct dma_map_ops *dma_ops = get_dma_ops(dev);
-
-	dma_ops->free(dev, size, cpu_addr, dma_handle, attrs);
-}
-
-#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
-#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
-
 static inline void dma_cache_sync(struct device *dev, void *vaddr,
 		size_t size, enum dma_data_direction direction)
 {
diff --git a/kernel/arch/unicore32/include/asm/memory.h b/kernel/arch/unicore32/include/asm/memory.h
index debafc402..3bb0a29fd 100644
--- a/kernel/arch/unicore32/include/asm/memory.h
+++ b/kernel/arch/unicore32/include/asm/memory.h
@@ -61,12 +61,6 @@
 #endif
 
 /*
- * Convert a physical address to a Page Frame Number and back
- */
-#define	__phys_to_pfn(paddr)	((paddr) >> PAGE_SHIFT)
-#define	__pfn_to_phys(pfn)	((pfn) << PAGE_SHIFT)
-
-/*
  * Convert a page to/from a physical address
  */
 #define page_to_phys(page)	(__pfn_to_phys(page_to_pfn(page)))
diff --git a/kernel/arch/unicore32/include/asm/pci.h b/kernel/arch/unicore32/include/asm/pci.h
index 654407e98..38b3f3785 100644
--- a/kernel/arch/unicore32/include/asm/pci.h
+++ b/kernel/arch/unicore32/include/asm/pci.h
@@ -18,16 +18,6 @@
 #include <asm-generic/pci.h>
 #include <mach/hardware.h> /* for PCIBIOS_MIN_* */
 
-#ifdef CONFIG_PCI
-static inline void pci_dma_burst_advice(struct pci_dev *pdev,
-					enum pci_dma_burst_strategy *strat,
-					unsigned long *strategy_parameter)
-{
-	*strat = PCI_DMA_BURST_INFINITY;
-	*strategy_parameter = ~0UL;
-}
-#endif
-
 #define HAVE_PCI_MMAP
 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
 	enum pci_mmap_state mmap_state, int write_combine);
diff --git a/kernel/arch/unicore32/kernel/fpu-ucf64.c b/kernel/arch/unicore32/kernel/fpu-ucf64.c
index 282a60ac8..a53343a90 100644
--- a/kernel/arch/unicore32/kernel/fpu-ucf64.c
+++ b/kernel/arch/unicore32/kernel/fpu-ucf64.c
@@ -90,8 +90,8 @@ void ucf64_exchandler(u32 inst, u32 fpexc, struct pt_regs *regs)
 			tmp &= ~(FPSCR_CON);
 		exc &= ~(FPSCR_CMPINSTR_BIT | FPSCR_CON);
 	} else {
-		pr_debug(KERN_ERR "UniCore-F64 Error: unhandled exceptions\n");
-		pr_debug(KERN_ERR "UniCore-F64 FPSCR 0x%08x INST 0x%08x\n",
+		pr_debug("UniCore-F64 Error: unhandled exceptions\n");
+		pr_debug("UniCore-F64 FPSCR 0x%08x INST 0x%08x\n",
 				cff(FPSCR), inst);
 
 		ucf64_raise_sigfpe(0, regs);
diff --git a/kernel/arch/unicore32/kernel/irq.c b/kernel/arch/unicore32/kernel/irq.c
index 0be5ccd7c..eb1fd0030 100644
--- a/kernel/arch/unicore32/kernel/irq.c
+++ b/kernel/arch/unicore32/kernel/irq.c
@@ -112,10 +112,9 @@ static struct irq_chip puv3_low_gpio_chip = {
  * irq_controller_lock held, and IRQs disabled.  Decode the IRQ
  * and call the handler.
  */
-static void
-puv3_gpio_handler(unsigned int irq, struct irq_desc *desc)
+static void puv3_gpio_handler(struct irq_desc *desc)
 {
-	unsigned int mask;
+	unsigned int mask, irq;
 
 	mask = readl(GPIO_GEDR);
 	do {
diff --git a/kernel/arch/unicore32/kernel/puv3-nb0916.c b/kernel/arch/unicore32/kernel/puv3-nb0916.c
index 46ebfdccb..aab5f341d 100644
--- a/kernel/arch/unicore32/kernel/puv3-nb0916.c
+++ b/kernel/arch/unicore32/kernel/puv3-nb0916.c
@@ -19,6 +19,7 @@
 #include <linux/reboot.h>
 #include <linux/interrupt.h>
 #include <linux/i2c.h>
+#include <linux/pwm.h>
 #include <linux/pwm_backlight.h>
 #include <linux/gpio.h>
 #include <linux/gpio_keys.h>
@@ -49,11 +50,14 @@ static struct resource puv3_i2c_resources[] = {
 	}
 };
 
+static struct pwm_lookup nb0916_pwm_lookup[] = {
+	PWM_LOOKUP("PKUnity-v3-PWM", 0, "pwm-backlight", NULL, 70 * 1024,
+		   PWM_POLARITY_NORMAL),
+};
+
 static struct platform_pwm_backlight_data nb0916_backlight_data = {
-	.pwm_id		= 0,
 	.max_brightness	= 100,
 	.dft_brightness	= 100,
-	.pwm_period_ns	= 70 * 1024,
 	.enable_gpio	= -1,
 };
 
@@ -112,6 +116,8 @@ int __init mach_nb0916_init(void)
 	platform_device_register_simple("PKUnity-v3-I2C", -1,
 			puv3_i2c_resources, ARRAY_SIZE(puv3_i2c_resources));
 
+	pwm_add_table(nb0916_pwm_lookup, ARRAY_SIZE(nb0916_pwm_lookup));
+
 	platform_device_register_data(NULL, "pwm-backlight", -1,
 			&nb0916_backlight_data, sizeof(nb0916_backlight_data));
 
diff --git a/kernel/arch/unicore32/kernel/time.c b/kernel/arch/unicore32/kernel/time.c
index d3824b2ff..ac4c5449b 100644
--- a/kernel/arch/unicore32/kernel/time.c
+++ b/kernel/arch/unicore32/kernel/time.c
@@ -46,29 +46,20 @@ puv3_osmr0_set_next_event(unsigned long delta, struct clock_event_device *c)
 	return (signed)(next - oscr) <= MIN_OSCR_DELTA ? -ETIME : 0;
 }
 
-static void
-puv3_osmr0_set_mode(enum clock_event_mode mode, struct clock_event_device *c)
+static int puv3_osmr0_shutdown(struct clock_event_device *evt)
 {
-	switch (mode) {
-	case CLOCK_EVT_MODE_ONESHOT:
-	case CLOCK_EVT_MODE_UNUSED:
-	case CLOCK_EVT_MODE_SHUTDOWN:
-		writel(readl(OST_OIER) & ~OST_OIER_E0, OST_OIER);
-		writel(readl(OST_OSSR) & ~OST_OSSR_M0, OST_OSSR);
-		break;
-
-	case CLOCK_EVT_MODE_RESUME:
-	case CLOCK_EVT_MODE_PERIODIC:
-		break;
-	}
+	writel(readl(OST_OIER) & ~OST_OIER_E0, OST_OIER);
+	writel(readl(OST_OSSR) & ~OST_OSSR_M0, OST_OSSR);
+	return 0;
 }
 
 static struct clock_event_device ckevt_puv3_osmr0 = {
-	.name		= "osmr0",
-	.features	= CLOCK_EVT_FEAT_ONESHOT,
-	.rating		= 200,
-	.set_next_event	= puv3_osmr0_set_next_event,
-	.set_mode	= puv3_osmr0_set_mode,
+	.name			= "osmr0",
+	.features		= CLOCK_EVT_FEAT_ONESHOT,
+	.rating			= 200,
+	.set_next_event		= puv3_osmr0_set_next_event,
+	.set_state_shutdown	= puv3_osmr0_shutdown,
+	.set_state_oneshot	= puv3_osmr0_shutdown,
 };
 
 static cycle_t puv3_read_oscr(struct clocksource *cs)