Merge android-4.4.168 (66a37fc) into msm-4.4

* refs/heads/tmp-66a37fc
  Linux 4.4.168
  selftests: Move networking/timestamping from Documentation
  rocker: fix rocker_tlv_put_* functions for KASAN
  staging: speakup: Replace strncpy with memcpy
  matroxfb: fix size of memcpy
  media: dvb-frontends: fix i2c access helpers for KASAN
  proc: do not access cmdline nor environ from file-backed areas
  proc: don't use FOLL_FORCE for reading cmdline and environment
  mm: replace access_remote_vm() write parameter with gup_flags
  mm: replace __access_remote_vm() write parameter with gup_flags
  mm: replace get_user_pages() write/force parameters with gup_flags
  mm: replace get_vaddr_frames() write/force parameters with gup_flags
  mm: replace get_user_pages_locked() write/force parameters with gup_flags
  mm: replace get_user_pages_unlocked() write/force parameters with gup_flags
  mm/nommu.c: Switch __get_user_pages_unlocked() to use __get_user_pages()
  mm: remove write/force parameters from __get_user_pages_unlocked()
  mm: remove write/force parameters from __get_user_pages_locked()
  sr: pass down correctly sized SCSI sense buffer
  swiotlb: clean up reporting
  hugetlbfs: fix bug in pgoff overflow checking
  hugetlbfs: check for pgoff value overflow
  hugetlbfs: fix offset overflow in hugetlbfs mmap
  mm/hugetlb.c: don't call region_abort if region_chg fails
  posix-timers: Sanitize overrun handling
  wil6210: missing length check in wmi_set_ie
  bpf: Prevent memory disambiguation attack
  bpf/verifier: Pass instruction index to check_mem_access() and check_xadd()
  bpf/verifier: Add spi variable to check_stack_write()
  bpf: support 8-byte metafield access
  KVM: SVM: Implement VIRT_SPEC_CTRL support for SSBD
  x86/speculation: Use synthetic bits for IBRS/IBPB/STIBP
  x86/bugs, KVM: Extend speculation control for VIRT_SPEC_CTRL
  KVM: SVM: Move spec control call after restore of GS
  x86/KVM/VMX: Expose SPEC_CTRL Bit(2) to the guest
  x86/bugs, KVM: Support the combination of guest and host IBRS
  x86/uaccess: Use __uaccess_begin_nospec() and uaccess_try_nospec
  x86/usercopy: Replace open coded stac/clac with __uaccess_{begin, end}
  x86: Introduce __uaccess_begin_nospec() and uaccess_try_nospec
  x86: fix SMAP in 32-bit environments
  x86: reorganize SMAP handling in user space accesses
  KVM/x86: Remove indirect MSR op calls from SPEC_CTRL
  KVM/SVM: Allow direct access to MSR_IA32_SPEC_CTRL
  KVM/VMX: Allow direct access to MSR_IA32_SPEC_CTRL
  KVM/VMX: Emulate MSR_IA32_ARCH_CAPABILITIES
  KVM/x86: Add IBPB support
  KVM: VMX: make MSR bitmaps per-VCPU
  KVM: VMX: introduce alloc_loaded_vmcs
  KVM: nVMX: Eliminate vmcs02 pool
  KVM: nVMX: mark vmcs12 pages dirty on L2 exit
  KVM: nVMX: fix msr bitmaps to prevent L2 from accessing L0 x2APIC
  ALSA: pcm: remove SNDRV_PCM_IOCTL1_INFO internal command
  pstore: Convert console write to use ->write_buf
  ocfs2: fix potential use after free
  debugobjects: avoid recursive calls with kmemleak
  hfsplus: do not free node before using
  hfs: do not free node before using
  ocfs2: fix deadlock caused by ocfs2_defrag_extent()
  fscache, cachefiles: remove redundant variable 'cache'
  fscache: fix race between enablement and dropping of object
  xen: xlate_mmu: add missing header to fix 'W=1' warning
  drm/ast: fixed reading monitor EDID not stable issue
  net: hisilicon: remove unexpected free_netdev
  ixgbe: recognize 1000BaseLX SFP modules as 1Gbps
  net: thunderx: fix NULL pointer dereference in nic_remove
  KVM: x86: fix empty-body warnings
  USB: omap_udc: fix USB gadget functionality on Palm Tungsten E
  USB: omap_udc: fix omap_udc_start() on 15xx machines
  USB: omap_udc: fix crashes on probe error and module removal
  USB: omap_udc: use devm_request_irq()
  bpf: fix check of allowed specifiers in bpf_trace_printk
  exportfs: do not read dentry after free
  ASoC: omap-dmic: Add pm_qos handling to avoid overruns with CPU_IDLE
  ASoC: omap-mcpdm: Add pm_qos handling to avoid under/overruns with CPU_IDLE
  Btrfs: send, fix infinite loop due to directory rename dependencies
  hwmon: (w83795) temp4_type has writable permission
  ASoC: dapm: Recalculate audio map forcely when card instantiated
  hwmon: (ina2xx) Fix current value calculation
  s390/cpum_cf: Reject request for sampling in event initialization
  sysv: return 'err' instead of 0 in __sysv_write_inode
  ARM: OMAP1: ams-delta: Fix possible use of uninitialized field
  ARM: OMAP2+: prm44xx: Fix section annotation on omap44xx_prm_enable_io_wakeup
  neighbour: Avoid writing before skb->head in neigh_hh_output()
  tun: forbid iface creation with rtnl ops
  tcp: fix NULL ref in tail loss probe
  rtnetlink: ndo_dflt_fdb_dump() only work for ARPHRD_ETHER devices
  net: Prevent invalid access to skb->prev in __qdisc_drop_all
  net: phy: don't allow __set_phy_supported to add unsupported modes
  net: 8139cp: fix a BUG triggered by changing mtu with network traffic
  ipv6: Check available headroom in ip6_xmit() even without options
  ANDROID: uid_sys_stats: Copy task_struct comm field to bigger buffer

Conflicts:
	arch/x86/include/asm/uaccess_32.h
	sound/core/pcm_native.c

Change-Id: I1d20594091279ae84c58669dd8ad5fa5e31989ab
[fixed compilation issue in kgsl.c]
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>

3 files changed, 52 insertions, 1 deletions

diff --git a/sound/soc/omap/omap-dmic.c b/sound/soc/omap/omap-dmic.c
index 09db2aec12a3..776e809a8aab 100644
--- a/sound/soc/omap/omap-dmic.c
+++ b/sound/soc/omap/omap-dmic.c
@@ -48,6 +48,8 @@ struct omap_dmic {
 	struct device *dev;
 	void __iomem *io_base;
 	struct clk *fclk;
+	struct pm_qos_request pm_qos_req;
+	int latency;
 	int fclk_freq;
 	int out_freq;
 	int clk_div;
@@ -124,6 +126,8 @@ static void omap_dmic_dai_shutdown(struct snd_pcm_substream *substream,
 
 	mutex_lock(&dmic->mutex);
 
+	pm_qos_remove_request(&dmic->pm_qos_req);
+
 	if (!dai->active)
 		dmic->active = 0;
 
@@ -226,6 +230,8 @@ static int omap_dmic_dai_hw_params(struct snd_pcm_substream *substream,
 	/* packet size is threshold * channels */
 	dma_data = snd_soc_dai_get_dma_data(dai, substream);
 	dma_data->maxburst = dmic->threshold * channels;
+	dmic->latency = (OMAP_DMIC_THRES_MAX - dmic->threshold) * USEC_PER_SEC /
+			params_rate(params);
 
 	return 0;
 }
@@ -236,6 +242,9 @@ static int omap_dmic_dai_prepare(struct snd_pcm_substream *substream,
 	struct omap_dmic *dmic = snd_soc_dai_get_drvdata(dai);
 	u32 ctrl;
 
+	if (pm_qos_request_active(&dmic->pm_qos_req))
+		pm_qos_update_request(&dmic->pm_qos_req, dmic->latency);
+
 	/* Configure uplink threshold */
 	omap_dmic_write(dmic, OMAP_DMIC_FIFO_CTRL_REG, dmic->threshold);
 
diff --git a/sound/soc/omap/omap-mcpdm.c b/sound/soc/omap/omap-mcpdm.c
index 8d0d45d330e7..8eb2d12b6a34 100644
--- a/sound/soc/omap/omap-mcpdm.c
+++ b/sound/soc/omap/omap-mcpdm.c
@@ -54,6 +54,8 @@ struct omap_mcpdm {
 	unsigned long phys_base;
 	void __iomem *io_base;
 	int irq;
+	struct pm_qos_request pm_qos_req;
+	int latency[2];
 
 	struct mutex mutex;
 
@@ -273,6 +275,9 @@ static void omap_mcpdm_dai_shutdown(struct snd_pcm_substream *substream,
 				  struct snd_soc_dai *dai)
 {
 	struct omap_mcpdm *mcpdm = snd_soc_dai_get_drvdata(dai);
+	int tx = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
+	int stream1 = tx ? SNDRV_PCM_STREAM_PLAYBACK : SNDRV_PCM_STREAM_CAPTURE;
+	int stream2 = tx ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
 
 	mutex_lock(&mcpdm->mutex);
 
@@ -285,6 +290,14 @@ static void omap_mcpdm_dai_shutdown(struct snd_pcm_substream *substream,
 		}
 	}
 
+	if (mcpdm->latency[stream2])
+		pm_qos_update_request(&mcpdm->pm_qos_req,
+				      mcpdm->latency[stream2]);
+	else if (mcpdm->latency[stream1])
+		pm_qos_remove_request(&mcpdm->pm_qos_req);
+
+	mcpdm->latency[stream1] = 0;
+
 	mutex_unlock(&mcpdm->mutex);
 }
 
@@ -296,7 +309,7 @@ static int omap_mcpdm_dai_hw_params(struct snd_pcm_substream *substream,
 	int stream = substream->stream;
 	struct snd_dmaengine_dai_dma_data *dma_data;
 	u32 threshold;
-	int channels;
+	int channels, latency;
 	int link_mask = 0;
 
 	channels = params_channels(params);
@@ -336,14 +349,25 @@ static int omap_mcpdm_dai_hw_params(struct snd_pcm_substream *substream,
 
 		dma_data->maxburst =
 				(MCPDM_DN_THRES_MAX - threshold) * channels;
+		latency = threshold;
 	} else {
 		/* If playback is not running assume a stereo stream to come */
 		if (!mcpdm->config[!stream].link_mask)
 			mcpdm->config[!stream].link_mask = (0x3 << 3);
 
 		dma_data->maxburst = threshold * channels;
+		latency = (MCPDM_DN_THRES_MAX - threshold);
 	}
 
+	/*
+	 * The DMA must act to a DMA request within latency time (usec) to avoid
+	 * under/overflow
+	 */
+	mcpdm->latency[stream] = latency * USEC_PER_SEC / params_rate(params);
+
+	if (!mcpdm->latency[stream])
+		mcpdm->latency[stream] = 10;
+
 	/* Check if we need to restart McPDM with this stream */
 	if (mcpdm->config[stream].link_mask &&
 	    mcpdm->config[stream].link_mask != link_mask)
@@ -358,6 +382,20 @@ static int omap_mcpdm_prepare(struct snd_pcm_substream *substream,
 				  struct snd_soc_dai *dai)
 {
 	struct omap_mcpdm *mcpdm = snd_soc_dai_get_drvdata(dai);
+	struct pm_qos_request *pm_qos_req = &mcpdm->pm_qos_req;
+	int tx = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
+	int stream1 = tx ? SNDRV_PCM_STREAM_PLAYBACK : SNDRV_PCM_STREAM_CAPTURE;
+	int stream2 = tx ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
+	int latency = mcpdm->latency[stream2];
+
+	/* Prevent omap hardware from hitting off between FIFO fills */
+	if (!latency || mcpdm->latency[stream1] < latency)
+		latency = mcpdm->latency[stream1];
+
+	if (pm_qos_request_active(pm_qos_req))
+		pm_qos_update_request(pm_qos_req, latency);
+	else if (latency)
+		pm_qos_add_request(pm_qos_req, PM_QOS_CPU_DMA_LATENCY, latency);
 
 	if (!omap_mcpdm_active(mcpdm)) {
 		omap_mcpdm_start(mcpdm);
@@ -419,6 +457,9 @@ static int omap_mcpdm_remove(struct snd_soc_dai *dai)
 	free_irq(mcpdm->irq, (void *)mcpdm);
 	pm_runtime_disable(mcpdm->dev);
 
+	if (pm_qos_request_active(&mcpdm->pm_qos_req))
+		pm_qos_remove_request(&mcpdm->pm_qos_req);
+
 	return 0;
 }
 
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index fae57d18bbd7..275df1d7a138 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1728,6 +1728,7 @@ static int snd_soc_instantiate_card(struct snd_soc_card *card)
 	}
 
 	card->instantiated = 1;
+	dapm_mark_endpoints_dirty(card);
 	snd_soc_dapm_sync(&card->dapm);
 	mutex_unlock(&card->mutex);
 	mutex_unlock(&client_mutex);