Merge commit 'linus/master' into merge-linus

Conflicts:

	arch/x86/kvm/i8254.c

11 files changed, 62 insertions, 38 deletions

diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index a726f3b01a6..efd3aa08b88 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -15,7 +15,7 @@ if MISC_DEVICES
 
 config ATMEL_PWM
 	tristate "Atmel AT32/AT91 PWM support"
-	depends on AVR32 || ARCH_AT91
+	depends on AVR32 || ARCH_AT91SAM9263 || ARCH_AT91SAM9RL || ARCH_AT91CAP9
 	help
 	  This option enables device driver support for the PWM channels
 	  on certain Atmel prcoessors.  Pulse Width Modulation is used for
@@ -409,6 +409,7 @@ config EEEPC_LAPTOP
 	depends on BACKLIGHT_CLASS_DEVICE
 	depends on HWMON
 	depends on EXPERIMENTAL
+	depends on RFKILL
 	---help---
 	  This driver supports the Fn-Fx keys on Eee PC laptops.
 	  It also adds the ability to switch camera/wlan on/off.
diff --git a/drivers/misc/eeepc-laptop.c b/drivers/misc/eeepc-laptop.c
index facdb9893c8..1ee8501e90f 100644
--- a/drivers/misc/eeepc-laptop.c
+++ b/drivers/misc/eeepc-laptop.c
@@ -450,12 +450,14 @@ static int eeepc_get_fan_pwm(void)
 	int value = 0;
 
 	read_acpi_int(NULL, EEEPC_EC_FAN_PWM, &value);
+	value = value * 255 / 100;
 	return (value);
 }
 
 static void eeepc_set_fan_pwm(int value)
 {
-	value = SENSORS_LIMIT(value, 0, 100);
+	value = SENSORS_LIMIT(value, 0, 255);
+	value = value * 100 / 255;
 	ec_write(EEEPC_EC_SC02, value);
 }
 
@@ -520,15 +522,23 @@ static ssize_t show_sys_hwmon(int (*get)(void), char *buf)
 	static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0);
 
 EEEPC_CREATE_SENSOR_ATTR(fan1_input, S_IRUGO, eeepc_get_fan_rpm, NULL);
-EEEPC_CREATE_SENSOR_ATTR(fan1_pwm, S_IRUGO | S_IWUSR,
+EEEPC_CREATE_SENSOR_ATTR(pwm1, S_IRUGO | S_IWUSR,
 			 eeepc_get_fan_pwm, eeepc_set_fan_pwm);
 EEEPC_CREATE_SENSOR_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
 			 eeepc_get_fan_ctrl, eeepc_set_fan_ctrl);
 
+static ssize_t
+show_name(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	return sprintf(buf, "eeepc\n");
+}
+static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
+
 static struct attribute *hwmon_attributes[] = {
-	&sensor_dev_attr_fan1_pwm.dev_attr.attr,
+	&sensor_dev_attr_pwm1.dev_attr.attr,
 	&sensor_dev_attr_fan1_input.dev_attr.attr,
 	&sensor_dev_attr_pwm1_enable.dev_attr.attr,
+	&sensor_dev_attr_name.dev_attr.attr,
 	NULL
 };
 
diff --git a/drivers/misc/hp-wmi.c b/drivers/misc/hp-wmi.c
index 6d407c2a4f9..5dabfb69ee5 100644
--- a/drivers/misc/hp-wmi.c
+++ b/drivers/misc/hp-wmi.c
@@ -309,7 +309,7 @@ static int hp_wmi_setkeycode(struct input_dev *dev, int scancode, int keycode)
 	return -EINVAL;
 }
 
-void hp_wmi_notify(u32 value, void *context)
+static void hp_wmi_notify(u32 value, void *context)
 {
 	struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
 	static struct key_entry *key;
diff --git a/drivers/misc/phantom.c b/drivers/misc/phantom.c
index daf585689ce..abdebe34738 100644
--- a/drivers/misc/phantom.c
+++ b/drivers/misc/phantom.c
@@ -399,9 +399,9 @@ static int __devinit phantom_probe(struct pci_dev *pdev,
 		goto err_irq;
 	}
 
-	if (IS_ERR(device_create_drvdata(phantom_class, &pdev->dev,
-					 MKDEV(phantom_major, minor),
-					 NULL, "phantom%u", minor)))
+	if (IS_ERR(device_create(phantom_class, &pdev->dev,
+				 MKDEV(phantom_major, minor), NULL,
+				 "phantom%u", minor)))
 		dev_err(&pdev->dev, "can't create device\n");
 
 	pci_set_drvdata(pdev, pht);
diff --git a/drivers/misc/sgi-gru/gru.h b/drivers/misc/sgi-gru/gru.h
index 40df7cb3f0a..f93f03a9e6e 100644
--- a/drivers/misc/sgi-gru/gru.h
+++ b/drivers/misc/sgi-gru/gru.h
@@ -30,9 +30,9 @@
 /*
  * Size used to map GRU GSeg
  */
-#if defined CONFIG_IA64
+#if defined(CONFIG_IA64)
 #define GRU_GSEG_PAGESIZE	(256 * 1024UL)
-#elif defined CONFIG_X86_64
+#elif defined(CONFIG_X86_64)
 #define GRU_GSEG_PAGESIZE	(256 * 1024UL)		/* ZZZ 2MB ??? */
 #else
 #error "Unsupported architecture"
diff --git a/drivers/misc/sgi-gru/gru_instructions.h b/drivers/misc/sgi-gru/gru_instructions.h
index 0dc36225c7c..48762e7b98b 100644
--- a/drivers/misc/sgi-gru/gru_instructions.h
+++ b/drivers/misc/sgi-gru/gru_instructions.h
@@ -26,7 +26,7 @@
  * Architecture dependent functions
  */
 
-#if defined CONFIG_IA64
+#if defined(CONFIG_IA64)
 #include <linux/compiler.h>
 #include <asm/intrinsics.h>
 #define __flush_cache(p)		ia64_fc(p)
@@ -36,7 +36,7 @@
 			barrier();					\
 			*((volatile int *)(p)) = v; /* force st.rel */	\
 		} while (0)
-#elif defined CONFIG_X86_64
+#elif defined(CONFIG_X86_64)
 #define __flush_cache(p)		clflush(p)
 #define gru_ordered_store_int(p,v)					\
 		do {							\
@@ -299,6 +299,7 @@ static inline void gru_flush_cache(void *p)
 static inline void gru_start_instruction(struct gru_instruction *ins, int op32)
 {
 	gru_ordered_store_int(ins, op32);
+	gru_flush_cache(ins);
 }
 
 
@@ -604,8 +605,9 @@ static inline int gru_get_cb_substatus(void *cb)
 static inline int gru_check_status(void *cb)
 {
 	struct gru_control_block_status *cbs = (void *)cb;
-	int ret = cbs->istatus;
+	int ret;
 
+	ret = cbs->istatus;
 	if (ret == CBS_CALL_OS)
 		ret = gru_check_status_proc(cb);
 	return ret;
@@ -617,7 +619,7 @@ static inline int gru_check_status(void *cb)
 static inline int gru_wait(void *cb)
 {
 	struct gru_control_block_status *cbs = (void *)cb;
-	int ret = cbs->istatus;;
+	int ret = cbs->istatus;
 
 	if (ret != CBS_IDLE)
 		ret = gru_wait_proc(cb);
diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c
index 3d33015bbf3..8c389d606c3 100644
--- a/drivers/misc/sgi-gru/grufault.c
+++ b/drivers/misc/sgi-gru/grufault.c
@@ -214,12 +214,14 @@ static int non_atomic_pte_lookup(struct vm_area_struct *vma,
 }
 
 /*
- *
  * atomic_pte_lookup
  *
  * Convert a user virtual address to a physical address
  * Only supports Intel large pages (2MB only) on x86_64.
  *	ZZZ - hugepage support is incomplete
+ *
+ * NOTE: mmap_sem is already held on entry to this function. This
+ * guarantees existence of the page tables.
  */
 static int atomic_pte_lookup(struct vm_area_struct *vma, unsigned long vaddr,
 	int write, unsigned long *paddr, int *pageshift)
@@ -229,9 +231,6 @@ static int atomic_pte_lookup(struct vm_area_struct *vma, unsigned long vaddr,
 	pud_t *pudp;
 	pte_t pte;
 
-	WARN_ON(irqs_disabled());		/* ZZZ debug */
-
-	local_irq_disable();
 	pgdp = pgd_offset(vma->vm_mm, vaddr);
 	if (unlikely(pgd_none(*pgdp)))
 		goto err;
@@ -250,8 +249,6 @@ static int atomic_pte_lookup(struct vm_area_struct *vma, unsigned long vaddr,
 #endif
 		pte = *pte_offset_kernel(pmdp, vaddr);
 
-	local_irq_enable();
-
 	if (unlikely(!pte_present(pte) ||
 		     (write && (!pte_write(pte) || !pte_dirty(pte)))))
 		return 1;
@@ -324,6 +321,7 @@ static int gru_try_dropin(struct gru_thread_state *gts,
 	 * Atomic lookup is faster & usually works even if called in non-atomic
 	 * context.
 	 */
+	rmb();	/* Must/check ms_range_active before loading PTEs */
 	ret = atomic_pte_lookup(vma, vaddr, write, &paddr, &pageshift);
 	if (ret) {
 		if (!cb)
@@ -543,6 +541,7 @@ int gru_get_exception_detail(unsigned long arg)
 		ucbnum = get_cb_number((void *)excdet.cb);
 		cbrnum = thread_cbr_number(gts, ucbnum);
 		cbe = get_cbe_by_index(gts->ts_gru, cbrnum);
+		prefetchw(cbe);		/* Harmless on hardware, required for emulator */
 		excdet.opc = cbe->opccpy;
 		excdet.exopc = cbe->exopccpy;
 		excdet.ecause = cbe->ecause;
diff --git a/drivers/misc/sgi-gru/grufile.c b/drivers/misc/sgi-gru/grufile.c
index 23c91f5f6b6..5c027b6b4e5 100644
--- a/drivers/misc/sgi-gru/grufile.c
+++ b/drivers/misc/sgi-gru/grufile.c
@@ -113,7 +113,7 @@ static int gru_file_mmap(struct file *file, struct vm_area_struct *vma)
 		return -EPERM;
 
 	if (vma->vm_start & (GRU_GSEG_PAGESIZE - 1) ||
-			vma->vm_end & (GRU_GSEG_PAGESIZE - 1))
+	    			vma->vm_end & (GRU_GSEG_PAGESIZE - 1))
 		return -EINVAL;
 
 	vma->vm_flags |=
@@ -398,6 +398,12 @@ static int __init gru_init(void)
 	irq = get_base_irq();
 	for (chip = 0; chip < GRU_CHIPLETS_PER_BLADE; chip++) {
 		ret = request_irq(irq + chip, gru_intr, 0, id, NULL);
+		/* TODO: fix irq handling on x86. For now ignore failures because
+		 * interrupts are not required & not yet fully supported */
+		if (ret) {
+			printk("!!!WARNING: GRU ignoring request failure!!!\n");
+			ret = 0;
+		}
 		if (ret) {
 			printk(KERN_ERR "%s: request_irq failed\n",
 			       GRU_DRIVER_ID_STR);
@@ -445,6 +451,9 @@ static void __exit gru_exit(void)
 	int order = get_order(sizeof(struct gru_state) *
 			      GRU_CHIPLETS_PER_BLADE);
 
+	if (!IS_UV())
+		return;
+
 	for (i = 0; i < GRU_CHIPLETS_PER_BLADE; i++)
 		free_irq(IRQ_GRU + i, NULL);
 
diff --git a/drivers/misc/sgi-gru/gruhandles.h b/drivers/misc/sgi-gru/gruhandles.h
index d16031d6267..b63018d60fe 100644
--- a/drivers/misc/sgi-gru/gruhandles.h
+++ b/drivers/misc/sgi-gru/gruhandles.h
@@ -91,12 +91,7 @@
 #define GSEGPOFF(h) 		((h) & (GRU_SIZE - 1))
 
 /* Convert an arbitrary handle address to the beginning of the GRU segment */
-#ifndef __PLUGIN__
 #define GRUBASE(h)		((void *)((unsigned long)(h) & ~(GRU_SIZE - 1)))
-#else
-extern void *gmu_grubase(void *h);
-#define GRUBASE(h)		gmu_grubase(h)
-#endif
 
 /* General addressing macros. */
 static inline void *get_gseg_base_address(void *base, int ctxnum)
diff --git a/drivers/misc/sgi-gru/grukservices.c b/drivers/misc/sgi-gru/grukservices.c
index dfd49af0fe1..880c55dfb66 100644
--- a/drivers/misc/sgi-gru/grukservices.c
+++ b/drivers/misc/sgi-gru/grukservices.c
@@ -122,6 +122,7 @@ int gru_get_cb_exception_detail(void *cb,
 	struct gru_control_block_extended *cbe;
 
 	cbe = get_cbe(GRUBASE(cb), get_cb_number(cb));
+	prefetchw(cbe);         /* Harmless on hardware, required for emulator */
 	excdet->opc = cbe->opccpy;
 	excdet->exopc = cbe->exopccpy;
 	excdet->ecause = cbe->ecause;
@@ -466,7 +467,7 @@ int gru_send_message_gpa(unsigned long mq, void *mesg, unsigned int bytes)
 	STAT(mesq_send);
 	BUG_ON(bytes < sizeof(int) || bytes > 2 * GRU_CACHE_LINE_BYTES);
 
-	clines = (bytes + GRU_CACHE_LINE_BYTES - 1) / GRU_CACHE_LINE_BYTES;
+	clines = DIV_ROUND_UP(bytes, GRU_CACHE_LINE_BYTES);
 	if (gru_get_cpu_resources(bytes, &cb, &dsr))
 		return MQE_BUG_NO_RESOURCES;
 	memcpy(dsr, mesg, bytes);
diff --git a/drivers/misc/sgi-gru/grumain.c b/drivers/misc/sgi-gru/grumain.c
index 0eeb8dddd2f..e11e1ac5090 100644
--- a/drivers/misc/sgi-gru/grumain.c
+++ b/drivers/misc/sgi-gru/grumain.c
@@ -432,29 +432,35 @@ static inline long gru_copy_handle(void *d, void *s)
 	return GRU_HANDLE_BYTES;
 }
 
-/* rewrite in assembly & use lots of prefetch */
-static void gru_load_context_data(void *save, void *grubase, int ctxnum,
-				  unsigned long cbrmap, unsigned long dsrmap)
+static void gru_prefetch_context(void *gseg, void *cb, void *cbe, unsigned long cbrmap,
+				unsigned long length)
 {
-	void *gseg, *cb, *cbe;
-	unsigned long length;
 	int i, scr;
 
-	gseg = grubase + ctxnum * GRU_GSEG_STRIDE;
-	length = hweight64(dsrmap) * GRU_DSR_AU_BYTES;
 	prefetch_data(gseg + GRU_DS_BASE, length / GRU_CACHE_LINE_BYTES,
 		      GRU_CACHE_LINE_BYTES);
 
-	cb = gseg + GRU_CB_BASE;
-	cbe = grubase + GRU_CBE_BASE;
 	for_each_cbr_in_allocation_map(i, &cbrmap, scr) {
 		prefetch_data(cb, 1, GRU_CACHE_LINE_BYTES);
 		prefetch_data(cbe + i * GRU_HANDLE_STRIDE, 1,
 			      GRU_CACHE_LINE_BYTES);
 		cb += GRU_HANDLE_STRIDE;
 	}
+}
+
+static void gru_load_context_data(void *save, void *grubase, int ctxnum,
+				  unsigned long cbrmap, unsigned long dsrmap)
+{
+	void *gseg, *cb, *cbe;
+	unsigned long length;
+	int i, scr;
 
+	gseg = grubase + ctxnum * GRU_GSEG_STRIDE;
 	cb = gseg + GRU_CB_BASE;
+	cbe = grubase + GRU_CBE_BASE;
+	length = hweight64(dsrmap) * GRU_DSR_AU_BYTES;
+	gru_prefetch_context(gseg, cb, cbe, cbrmap, length);
+
 	for_each_cbr_in_allocation_map(i, &cbrmap, scr) {
 		save += gru_copy_handle(cb, save);
 		save += gru_copy_handle(cbe + i * GRU_HANDLE_STRIDE, save);
@@ -472,15 +478,16 @@ static void gru_unload_context_data(void *save, void *grubase, int ctxnum,
 	int i, scr;
 
 	gseg = grubase + ctxnum * GRU_GSEG_STRIDE;
-
 	cb = gseg + GRU_CB_BASE;
 	cbe = grubase + GRU_CBE_BASE;
+	length = hweight64(dsrmap) * GRU_DSR_AU_BYTES;
+	gru_prefetch_context(gseg, cb, cbe, cbrmap, length);
+
 	for_each_cbr_in_allocation_map(i, &cbrmap, scr) {
 		save += gru_copy_handle(save, cb);
 		save += gru_copy_handle(save, cbe + i * GRU_HANDLE_STRIDE);
 		cb += GRU_HANDLE_STRIDE;
 	}
-	length = hweight64(dsrmap) * GRU_DSR_AU_BYTES;
 	memcpy(save, gseg + GRU_DS_BASE, length);
 }