---

yaml
---
r: 180387
b: refs/heads/master
c: ac73fdd
h: refs/heads/master
i:
  180385: 821b26e
  180383: 748641e
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ef286f6fa673cd7fb367e1b145069d8dbfcc6081
+refs/heads/master: ac73fddfc523bf3c3525d16356b44527c44fae6d

trunk/Documentation/cpu-freq/governors.txt

@@ -145,8 +145,8 @@ show_sampling_rate_max: THIS INTERFACE IS DEPRECATED, DON'T USE IT.
 up_threshold: defines what the average CPU usage between the samplings
 of 'sampling_rate' needs to be for the kernel to make a decision on
 whether it should increase the frequency.  For example when it is set
-to its default value of '80' it means that between the checking
-intervals the CPU needs to be on average more than 80% in use to then
+to its default value of '95' it means that between the checking
+intervals the CPU needs to be on average more than 95% in use to then
 decide that the CPU frequency needs to be increased.  
 
 ignore_nice_load: this parameter takes a value of '0' or '1'. When

trunk/arch/microblaze/kernel/setup.c

@@ -54,6 +54,7 @@ void __init setup_arch(char **cmdline_p)
 
 	microblaze_cache_init();
 
+	invalidate_dcache();
 	enable_dcache();
 
 	invalidate_icache();

trunk/arch/powerpc/platforms/pseries/xics.c

@@ -784,9 +784,13 @@ static void xics_set_cpu_priority(unsigned char cppr)
 {
 	struct xics_cppr *os_cppr = &__get_cpu_var(xics_cppr);
 
-	BUG_ON(os_cppr->index != 0);
+	/*
+	 * we only really want to set the priority when there's
+	 * just one cppr value on the stack
+	 */
+	WARN_ON(os_cppr->index != 0);
 
-	os_cppr->stack[os_cppr->index] = cppr;
+	os_cppr->stack[0] = cppr;
 
 	if (firmware_has_feature(FW_FEATURE_LPAR))
 		lpar_cppr_info(cppr);
@@ -821,8 +825,14 @@ void xics_setup_cpu(void)
 
 void xics_teardown_cpu(void)
 {
+	struct xics_cppr *os_cppr = &__get_cpu_var(xics_cppr);
 	int cpu = smp_processor_id();
 
+	/*
+	 * we have to reset the cppr index to 0 because we're
+	 * not going to return from the IPI
+	 */
+	os_cppr->index = 0;
 	xics_set_cpu_priority(0);
 
 	/* Clear any pending IPI request */

trunk/arch/sh/kernel/cpu/sh3/entry.S

@@ -132,7 +132,6 @@ ENTRY(tlb_protection_violation_store)
 	 mov	#1, r5
 
 call_handle_tlbmiss:
-	setup_frame_reg
 	mov.l	1f, r0
 	mov	r5, r8
 	mov.l	@r0, r6
@@ -365,6 +364,8 @@ handle_exception:
 	 mov.l	@k2, k2		! read out vector and keep in k2
 
 handle_exception_special:
+	setup_frame_reg
+
 	! Setup return address and jump to exception handler
 	mov.l	7f, r9		! fetch return address
 	stc	r2_bank, r0	! k2 (vector)

trunk/arch/sh/kernel/dwarf.c

@@ -540,6 +540,8 @@ void dwarf_free_frame(struct dwarf_frame *frame)
 	mempool_free(frame, dwarf_frame_pool);
 }
 
+extern void ret_from_irq(void);
+
 /**
  *	dwarf_unwind_stack - unwind the stack
  *
@@ -678,6 +680,24 @@ struct dwarf_frame * dwarf_unwind_stack(unsigned long pc,
 	addr = frame->cfa + reg->addr;
 	frame->return_addr = __raw_readl(addr);
 
+	/*
+	 * Ah, the joys of unwinding through interrupts.
+	 *
+	 * Interrupts are tricky - the DWARF info needs to be _really_
+	 * accurate and unfortunately I'm seeing a lot of bogus DWARF
+	 * info. For example, I've seen interrupts occur in epilogues
+	 * just after the frame pointer (r14) had been restored. The
+	 * problem was that the DWARF info claimed that the CFA could be
+	 * reached by using the value of the frame pointer before it was
+	 * restored.
+	 *
+	 * So until the compiler can be trusted to produce reliable
+	 * DWARF info when it really matters, let's stop unwinding once
+	 * we've calculated the function that was interrupted.
+	 */
+	if (prev && prev->pc == (unsigned long)ret_from_irq)
+		frame->return_addr = 0;
+
 	return frame;
 
 bail:

trunk/arch/sh/kernel/entry-common.S

@@ -70,8 +70,14 @@ ret_from_exception:
 	CFI_STARTPROC simple
 	CFI_DEF_CFA r14, 0
 	CFI_REL_OFFSET 17, 64
-	CFI_REL_OFFSET 15, 0
+	CFI_REL_OFFSET 15, 60
 	CFI_REL_OFFSET 14, 56
+	CFI_REL_OFFSET 13, 52
+	CFI_REL_OFFSET 12, 48
+	CFI_REL_OFFSET 11, 44
+	CFI_REL_OFFSET 10, 40
+	CFI_REL_OFFSET 9, 36
+	CFI_REL_OFFSET 8, 32
 	preempt_stop()
 ENTRY(ret_from_irq)
 	!

trunk/arch/x86/kernel/cpu/cpufreq/powernow-k8.c

@@ -1356,6 +1356,7 @@ static int __devexit powernowk8_cpu_exit(struct cpufreq_policy *pol)
 
 	kfree(data->powernow_table);
 	kfree(data);
+	per_cpu(powernow_data, pol->cpu) = NULL;
 
 	return 0;
 }
@@ -1375,7 +1376,7 @@ static unsigned int powernowk8_get(unsigned int cpu)
 	int err;
 
 	if (!data)
-		return -EINVAL;
+		return 0;
 
 	smp_call_function_single(cpu, query_values_on_cpu, &err, true);
 	if (err)

trunk/drivers/cpufreq/cpufreq_ondemand.c

@@ -554,6 +554,9 @@ static void dbs_check_cpu(struct cpu_dbs_info_s *this_dbs_info)
 				(dbs_tuners_ins.up_threshold -
 				 dbs_tuners_ins.down_differential);
 
+		if (freq_next < policy->min)
+			freq_next = policy->min;
+
 		if (!dbs_tuners_ins.powersave_bias) {
 			__cpufreq_driver_target(policy, freq_next,
 					CPUFREQ_RELATION_L);

trunk/drivers/media/dvb/dvb-core/dmxdev.c

@@ -761,7 +761,6 @@ static int dvb_demux_open(struct inode *inode, struct file *file)
 	dvb_ringbuffer_init(&dmxdevfilter->buffer, NULL, 8192);
 	dmxdevfilter->type = DMXDEV_TYPE_NONE;
 	dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED);
-	INIT_LIST_HEAD(&dmxdevfilter->feed.ts);
 	init_timer(&dmxdevfilter->timer);
 
 	dvbdev->users++;
@@ -887,6 +886,7 @@ static int dvb_dmxdev_pes_filter_set(struct dmxdev *dmxdev,
 	dmxdevfilter->type = DMXDEV_TYPE_PES;
 	memcpy(&dmxdevfilter->params, params,
 	       sizeof(struct dmx_pes_filter_params));
+	INIT_LIST_HEAD(&dmxdevfilter->feed.ts);
 
 	dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
 

trunk/drivers/media/dvb/dvb-core/dvb_demux.c

@@ -426,16 +426,7 @@ static void dvb_dmx_swfilter_packet(struct dvb_demux *demux, const u8 *buf)
 		};
 	};
 
-	if (dvb_demux_tscheck) {
-		if (!demux->cnt_storage)
-			demux->cnt_storage = vmalloc(MAX_PID + 1);
-
-		if (!demux->cnt_storage) {
-			printk(KERN_WARNING "Couldn't allocate memory for TS/TEI check. Disabling it\n");
-			dvb_demux_tscheck = 0;
-			goto no_dvb_demux_tscheck;
-		}
-
+	if (demux->cnt_storage) {
 		/* check pkt counter */
 		if (pid < MAX_PID) {
 			if (buf[1] & 0x80)
@@ -454,7 +445,6 @@ static void dvb_dmx_swfilter_packet(struct dvb_demux *demux, const u8 *buf)
 		};
 		/* end check */
 	};
-no_dvb_demux_tscheck:
 
 	list_for_each_entry(feed, &demux->feed_list, list_head) {
 		if ((feed->pid != pid) && (feed->pid != 0x2000))
@@ -1246,6 +1236,7 @@ int dvb_dmx_init(struct dvb_demux *dvbdemux)
 	dvbdemux->feed = vmalloc(dvbdemux->feednum * sizeof(struct dvb_demux_feed));
 	if (!dvbdemux->feed) {
 		vfree(dvbdemux->filter);
+		dvbdemux->filter = NULL;
 		return -ENOMEM;
 	}
 	for (i = 0; i < dvbdemux->filternum; i++) {
@@ -1257,6 +1248,13 @@ int dvb_dmx_init(struct dvb_demux *dvbdemux)
 		dvbdemux->feed[i].index = i;
 	}
 
+	if (dvb_demux_tscheck) {
+		dvbdemux->cnt_storage = vmalloc(MAX_PID + 1);
+
+		if (!dvbdemux->cnt_storage)
+			printk(KERN_WARNING "Couldn't allocate memory for TS/TEI check. Disabling it\n");
+	}
+
 	INIT_LIST_HEAD(&dvbdemux->frontend_list);
 
 	for (i = 0; i < DMX_TS_PES_OTHER; i++) {

trunk/drivers/usb/host/r8a66597-hcd.c

@@ -35,7 +35,9 @@
 #include <linux/usb.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
+#include <linux/mm.h>
 #include <linux/irq.h>
+#include <asm/cacheflush.h>
 
 #include "../core/hcd.h"
 #include "r8a66597.h"
@@ -820,6 +822,26 @@ static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
 	enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
 }
 
+static void r8a66597_urb_done(struct r8a66597 *r8a66597, struct urb *urb,
+			      int status)
+__releases(r8a66597->lock)
+__acquires(r8a66597->lock)
+{
+	if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) != PIPE_CONTROL) {
+		void *ptr;
+
+		for (ptr = urb->transfer_buffer;
+		     ptr < urb->transfer_buffer + urb->transfer_buffer_length;
+		     ptr += PAGE_SIZE)
+			flush_dcache_page(virt_to_page(ptr));
+	}
+
+	usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
+	spin_unlock(&r8a66597->lock);
+	usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb, status);
+	spin_lock(&r8a66597->lock);
+}
+
 /* this function must be called with interrupt disabled */
 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
 {
@@ -838,15 +860,9 @@ static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
 		list_del(&td->queue);
 		kfree(td);
 
-		if (urb) {
-			usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597),
-					urb);
+		if (urb)
+			r8a66597_urb_done(r8a66597, urb, -ENODEV);
 
-			spin_unlock(&r8a66597->lock);
-			usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb,
-					-ENODEV);
-			spin_lock(&r8a66597->lock);
-		}
 		break;
 	}
 }
@@ -1006,6 +1022,8 @@ static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port,
 /* this function must be called with interrupt disabled */
 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
 					u16 syssts)
+__releases(r8a66597->lock)
+__acquires(r8a66597->lock)
 {
 	if (syssts == SE0) {
 		r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
@@ -1023,7 +1041,9 @@ static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
 			usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
 	}
 
+	spin_unlock(&r8a66597->lock);
 	usb_hcd_poll_rh_status(r8a66597_to_hcd(r8a66597));
+	spin_lock(&r8a66597->lock);
 }
 
 /* this function must be called with interrupt disabled */
@@ -1283,10 +1303,7 @@ __releases(r8a66597->lock) __acquires(r8a66597->lock)
 		if (usb_pipeisoc(urb->pipe))
 			urb->start_frame = r8a66597_get_frame(hcd);
 
-		usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
-		spin_unlock(&r8a66597->lock);
-		usb_hcd_giveback_urb(hcd, urb, status);
-		spin_lock(&r8a66597->lock);
+		r8a66597_urb_done(r8a66597, urb, status);
 	}
 
 	if (restart) {

trunk/fs/9p/v9fs.c

@@ -84,7 +84,7 @@ static const match_table_t tokens = {
 
 static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
 {
-	char *options;
+	char *options, *tmp_options;
 	substring_t args[MAX_OPT_ARGS];
 	char *p;
 	int option = 0;
@@ -102,9 +102,12 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
 	if (!opts)
 		return 0;
 
-	options = kstrdup(opts, GFP_KERNEL);
-	if (!options)
+	tmp_options = kstrdup(opts, GFP_KERNEL);
+	if (!tmp_options) {
+		ret = -ENOMEM;
 		goto fail_option_alloc;
+	}
+	options = tmp_options;
 
 	while ((p = strsep(&options, ",")) != NULL) {
 		int token;
@@ -159,8 +162,12 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
 			break;
 		case Opt_cache:
 			s = match_strdup(&args[0]);
-			if (!s)
-				goto fail_option_alloc;
+			if (!s) {
+				ret = -ENOMEM;
+				P9_DPRINTK(P9_DEBUG_ERROR,
+				  "problem allocating copy of cache arg\n");
+				goto free_and_return;
+			}
 
 			if (strcmp(s, "loose") == 0)
 				v9ses->cache = CACHE_LOOSE;
@@ -173,8 +180,12 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
 
 		case Opt_access:
 			s = match_strdup(&args[0]);
-			if (!s)
-				goto fail_option_alloc;
+			if (!s) {
+				ret = -ENOMEM;
+				P9_DPRINTK(P9_DEBUG_ERROR,
+				  "problem allocating copy of access arg\n");
+				goto free_and_return;
+			}
 
 			v9ses->flags &= ~V9FS_ACCESS_MASK;
 			if (strcmp(s, "user") == 0)
@@ -194,13 +205,11 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
 			continue;
 		}
 	}
-	kfree(options);
-	return ret;
 
+free_and_return:
+	kfree(tmp_options);
 fail_option_alloc:
-	P9_DPRINTK(P9_DEBUG_ERROR,
-		   "failed to allocate copy of option argument\n");
-	return -ENOMEM;
+	return ret;
 }
 
 /**

trunk/fs/9p/v9fs_vfs.h

@@ -60,3 +60,4 @@ void v9fs_dentry_release(struct dentry *);
 int v9fs_uflags2omode(int uflags, int extended);
 
 ssize_t v9fs_file_readn(struct file *, char *, char __user *, u32, u64);
+void v9fs_blank_wstat(struct p9_wstat *wstat);