Merge tag 'v3.7' into stable/for-linus-3.8

Linux 3.7

* tag 'v3.7': (833 commits)
  Linux 3.7
  Input: matrix-keymap - provide proper module license
  Revert "revert "Revert "mm: remove __GFP_NO_KSWAPD""" and associated damage
  ipv4: ip_check_defrag must not modify skb before unsharing
  Revert "mm: avoid waking kswapd for THP allocations when compaction is deferred or contended"
  inet_diag: validate port comparison byte code to prevent unsafe reads
  inet_diag: avoid unsafe and nonsensical prefix matches in inet_diag_bc_run()
  inet_diag: validate byte code to prevent oops in inet_diag_bc_run()
  inet_diag: fix oops for IPv4 AF_INET6 TCP SYN-RECV state
  mm: vmscan: fix inappropriate zone congestion clearing
  vfs: fix O_DIRECT read past end of block device
  net: gro: fix possible panic in skb_gro_receive()
  tcp: bug fix Fast Open client retransmission
  tmpfs: fix shared mempolicy leak
  mm: vmscan: do not keep kswapd looping forever due to individual uncompactable zones
  mm: compaction: validate pfn range passed to isolate_freepages_block
  mmc: sh-mmcif: avoid oops on spurious interrupts (second try)
  Revert misapplied "mmc: sh-mmcif: avoid oops on spurious interrupts"
  mmc: sdhci-s3c: fix missing clock for gpio card-detect
  lib/Makefile: Fix oid_registry build dependency
  ...

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

Conflicts:
	arch/arm/xen/enlighten.c
	drivers/xen/Makefile

[We need to have the v3.7 base as the 'for-3.8' was based off v3.7-rc3
and there are some patches in v3.7-rc6 that we to have in our branch]

1 files changed, 37 insertions, 37 deletions

diff --git a/sound/soc/kirkwood/kirkwood-i2s.c b/sound/soc/kirkwood/kirkwood-i2s.c
index 542538d10ab..1d5db484d2d 100644
--- a/sound/soc/kirkwood/kirkwood-i2s.c
+++ b/sound/soc/kirkwood/kirkwood-i2s.c
@@ -95,7 +95,7 @@ static inline void kirkwood_set_dco(void __iomem *io, unsigned long rate)
 	do {
 		cpu_relax();
 		value = readl(io + KIRKWOOD_DCO_SPCR_STATUS);
-		value &= KIRKWOOD_DCO_SPCR_STATUS;
+		value &= KIRKWOOD_DCO_SPCR_STATUS_DCO_LOCK;
 	} while (value == 0);
 }
 
@@ -180,67 +180,72 @@ static int kirkwood_i2s_play_trigger(struct snd_pcm_substream *substream,
 				int cmd, struct snd_soc_dai *dai)
 {
 	struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
-	unsigned long value;
-
-	/*
-	 * specs says KIRKWOOD_PLAYCTL must be read 2 times before
-	 * changing it. So read 1 time here and 1 later.
-	 */
-	value = readl(priv->io + KIRKWOOD_PLAYCTL);
+	uint32_t ctl, value;
+
+	ctl = readl(priv->io + KIRKWOOD_PLAYCTL);
+	if (ctl & KIRKWOOD_PLAYCTL_PAUSE) {
+		unsigned timeout = 5000;
+		/*
+		 * The Armada510 spec says that if we enter pause mode, the
+		 * busy bit must be read back as clear _twice_.  Make sure
+		 * we respect that otherwise we get DMA underruns.
+		 */
+		do {
+			value = ctl;
+			ctl = readl(priv->io + KIRKWOOD_PLAYCTL);
+			if (!((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY))
+				break;
+			udelay(1);
+		} while (timeout--);
+
+		if ((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY)
+			dev_notice(dai->dev, "timed out waiting for busy to deassert: %08x\n",
+				   ctl);
+	}
 
 	switch (cmd) {
 	case SNDRV_PCM_TRIGGER_START:
-		/* stop audio, enable interrupts */
-		value = readl(priv->io + KIRKWOOD_PLAYCTL);
-		value |= KIRKWOOD_PLAYCTL_PAUSE;
-		writel(value, priv->io + KIRKWOOD_PLAYCTL);
-
 		value = readl(priv->io + KIRKWOOD_INT_MASK);
 		value |= KIRKWOOD_INT_CAUSE_PLAY_BYTES;
 		writel(value, priv->io + KIRKWOOD_INT_MASK);
 
 		/* configure audio & enable i2s playback */
-		value = readl(priv->io + KIRKWOOD_PLAYCTL);
-		value &= ~KIRKWOOD_PLAYCTL_BURST_MASK;
-		value &= ~(KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE
+		ctl &= ~KIRKWOOD_PLAYCTL_BURST_MASK;
+		ctl &= ~(KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE
 				| KIRKWOOD_PLAYCTL_SPDIF_EN);
 
 		if (priv->burst == 32)
-			value |= KIRKWOOD_PLAYCTL_BURST_32;
+			ctl |= KIRKWOOD_PLAYCTL_BURST_32;
 		else
-			value |= KIRKWOOD_PLAYCTL_BURST_128;
-		value |= KIRKWOOD_PLAYCTL_I2S_EN;
-		writel(value, priv->io + KIRKWOOD_PLAYCTL);
+			ctl |= KIRKWOOD_PLAYCTL_BURST_128;
+		ctl |= KIRKWOOD_PLAYCTL_I2S_EN;
+		writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
 		break;
 
 	case SNDRV_PCM_TRIGGER_STOP:
 		/* stop audio, disable interrupts */
-		value = readl(priv->io + KIRKWOOD_PLAYCTL);
-		value |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE;
-		writel(value, priv->io + KIRKWOOD_PLAYCTL);
+		ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE;
+		writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
 
 		value = readl(priv->io + KIRKWOOD_INT_MASK);
 		value &= ~KIRKWOOD_INT_CAUSE_PLAY_BYTES;
 		writel(value, priv->io + KIRKWOOD_INT_MASK);
 
 		/* disable all playbacks */
-		value = readl(priv->io + KIRKWOOD_PLAYCTL);
-		value &= ~(KIRKWOOD_PLAYCTL_I2S_EN | KIRKWOOD_PLAYCTL_SPDIF_EN);
-		writel(value, priv->io + KIRKWOOD_PLAYCTL);
+		ctl &= ~(KIRKWOOD_PLAYCTL_I2S_EN | KIRKWOOD_PLAYCTL_SPDIF_EN);
+		writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
 		break;
 
 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 	case SNDRV_PCM_TRIGGER_SUSPEND:
-		value = readl(priv->io + KIRKWOOD_PLAYCTL);
-		value |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE;
-		writel(value, priv->io + KIRKWOOD_PLAYCTL);
+		ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE;
+		writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
 		break;
 
 	case SNDRV_PCM_TRIGGER_RESUME:
 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
-		value = readl(priv->io + KIRKWOOD_PLAYCTL);
-		value &= ~(KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE);
-		writel(value, priv->io + KIRKWOOD_PLAYCTL);
+		ctl &= ~(KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE);
+		writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
 		break;
 
 	default:
@@ -260,11 +265,6 @@ static int kirkwood_i2s_rec_trigger(struct snd_pcm_substream *substream,
 
 	switch (cmd) {
 	case SNDRV_PCM_TRIGGER_START:
-		/* stop audio, enable interrupts */
-		value = readl(priv->io + KIRKWOOD_RECCTL);
-		value |= KIRKWOOD_RECCTL_PAUSE;
-		writel(value, priv->io + KIRKWOOD_RECCTL);
-
 		value = readl(priv->io + KIRKWOOD_INT_MASK);
 		value |= KIRKWOOD_INT_CAUSE_REC_BYTES;
 		writel(value, priv->io + KIRKWOOD_INT_MASK);