9 files changed, 210 insertions, 81 deletions

diff --git a/drivers/clocksource/sh_cmt.c b/drivers/clocksource/sh_cmt.c
index f975d24890fa..036e5865eb40 100644
--- a/drivers/clocksource/sh_cmt.c
+++ b/drivers/clocksource/sh_cmt.c
@@ -24,6 +24,7 @@
 #include <linux/ioport.h>
 #include <linux/io.h>
 #include <linux/clk.h>
+#include <linux/pm_runtime.h>
 #include <linux/irq.h>
 #include <linux/err.h>
 #include <linux/clocksource.h>
@@ -152,10 +153,12 @@ static int sh_cmt_enable(struct sh_cmt_priv *p, unsigned long *rate)
 {
         int ret;
 
-        /* enable clock */
+        /* wake up device and enable clock */
+        pm_runtime_get_sync(&p->pdev->dev);
         ret = clk_enable(p->clk);
         if (ret) {
                 dev_err(&p->pdev->dev, "cannot enable clock\n");
+                pm_runtime_put_sync(&p->pdev->dev);
                 return ret;
         }
 
@@ -187,8 +190,9 @@ static void sh_cmt_disable(struct sh_cmt_priv *p)
         /* disable interrupts in CMT block */
         sh_cmt_write(p, CMCSR, 0);
 
-        /* stop clock */
+        /* stop clock and mark device as idle */
         clk_disable(p->clk);
+        pm_runtime_put_sync(&p->pdev->dev);
 }
 
 /* private flags */
@@ -416,11 +420,15 @@ static cycle_t sh_cmt_clocksource_read(struct clocksource *cs)
 
 static int sh_cmt_clocksource_enable(struct clocksource *cs)
 {
+        int ret;
         struct sh_cmt_priv *p = cs_to_sh_cmt(cs);
 
         p->total_cycles = 0;
 
-        return sh_cmt_start(p, FLAG_CLOCKSOURCE);
+        ret = sh_cmt_start(p, FLAG_CLOCKSOURCE);
+        if (!ret)
+                __clocksource_updatefreq_hz(cs, p->rate);
+        return ret;
 }
 
 static void sh_cmt_clocksource_disable(struct clocksource *cs)
@@ -448,19 +456,10 @@ static int sh_cmt_register_clocksource(struct sh_cmt_priv *p,
         cs->mask = CLOCKSOURCE_MASK(sizeof(unsigned long) * 8);
         cs->flags = CLOCK_SOURCE_IS_CONTINUOUS;
 
-        /* clk_get_rate() needs an enabled clock */
-        clk_enable(p->clk);
-        p->rate = clk_get_rate(p->clk) / ((p->width == 16) ? 512 : 8);
-        clk_disable(p->clk);
-
-        /* TODO: calculate good shift from rate and counter bit width */
-        cs->shift = 0;
-        cs->mult = clocksource_hz2mult(p->rate, cs->shift);
-
         dev_info(&p->pdev->dev, "used as clock source\n");
 
-        clocksource_register(cs);
-
+        /* Register with dummy 1 Hz value, gets updated in ->enable() */
+        clocksource_register_hz(cs, 1);
         return 0;
 }
 
@@ -665,6 +664,7 @@ static int __devinit sh_cmt_probe(struct platform_device *pdev)
 
         if (p) {
                 dev_info(&pdev->dev, "kept as earlytimer\n");
+                pm_runtime_enable(&pdev->dev);
                 return 0;
         }
 
@@ -679,6 +679,9 @@ static int __devinit sh_cmt_probe(struct platform_device *pdev)
                 kfree(p);
                 platform_set_drvdata(pdev, NULL);
         }
+
+        if (!is_early_platform_device(pdev))
+                pm_runtime_enable(&pdev->dev);
         return ret;
 }
 
diff --git a/drivers/clocksource/sh_tmu.c b/drivers/clocksource/sh_tmu.c
index 36aba9923060..17296288a205 100644
--- a/drivers/clocksource/sh_tmu.c
+++ b/drivers/clocksource/sh_tmu.c
@@ -25,6 +25,7 @@
 #include <linux/delay.h>
 #include <linux/io.h>
 #include <linux/clk.h>
+#include <linux/pm_runtime.h>
 #include <linux/irq.h>
 #include <linux/err.h>
 #include <linux/clocksource.h>
@@ -109,10 +110,12 @@ static int sh_tmu_enable(struct sh_tmu_priv *p)
 {
         int ret;
 
-        /* enable clock */
+        /* wake up device and enable clock */
+        pm_runtime_get_sync(&p->pdev->dev);
         ret = clk_enable(p->clk);
         if (ret) {
                 dev_err(&p->pdev->dev, "cannot enable clock\n");
+                pm_runtime_put_sync(&p->pdev->dev);
                 return ret;
         }
 
@@ -141,8 +144,9 @@ static void sh_tmu_disable(struct sh_tmu_priv *p)
         /* disable interrupts in TMU block */
         sh_tmu_write(p, TCR, 0x0000);
 
-        /* stop clock */
+        /* stop clock and mark device as idle */
         clk_disable(p->clk);
+        pm_runtime_put_sync(&p->pdev->dev);
 }
 
 static void sh_tmu_set_next(struct sh_tmu_priv *p, unsigned long delta,
@@ -199,8 +203,12 @@ static cycle_t sh_tmu_clocksource_read(struct clocksource *cs)
 static int sh_tmu_clocksource_enable(struct clocksource *cs)
 {
         struct sh_tmu_priv *p = cs_to_sh_tmu(cs);
+        int ret;
 
-        return sh_tmu_enable(p);
+        ret = sh_tmu_enable(p);
+        if (!ret)
+                __clocksource_updatefreq_hz(cs, p->rate);
+        return ret;
 }
 
 static void sh_tmu_clocksource_disable(struct clocksource *cs)
@@ -221,17 +229,10 @@ static int sh_tmu_register_clocksource(struct sh_tmu_priv *p,
         cs->mask = CLOCKSOURCE_MASK(32);
         cs->flags = CLOCK_SOURCE_IS_CONTINUOUS;
 
-        /* clk_get_rate() needs an enabled clock */
-        clk_enable(p->clk);
-        /* channel will be configured at parent clock / 4 */
-        p->rate = clk_get_rate(p->clk) / 4;
-        clk_disable(p->clk);
-        /* TODO: calculate good shift from rate and counter bit width */
-        cs->shift = 10;
-        cs->mult = clocksource_hz2mult(p->rate, cs->shift);
-
         dev_info(&p->pdev->dev, "used as clock source\n");
-        clocksource_register(cs);
+
+        /* Register with dummy 1 Hz value, gets updated in ->enable() */
+        clocksource_register_hz(cs, 1);
         return 0;
 }
 
@@ -414,6 +415,7 @@ static int __devinit sh_tmu_probe(struct platform_device *pdev)
 
         if (p) {
                 dev_info(&pdev->dev, "kept as earlytimer\n");
+                pm_runtime_enable(&pdev->dev);
                 return 0;
         }
 
@@ -428,6 +430,9 @@ static int __devinit sh_tmu_probe(struct platform_device *pdev)
                 kfree(p);
                 platform_set_drvdata(pdev, NULL);
         }
+
+        if (!is_early_platform_device(pdev))
+                pm_runtime_enable(&pdev->dev);
         return ret;
 }
 
diff --git a/drivers/dma/shdma.c b/drivers/dma/shdma.c
index d50da41ac328..dcc1b2139fff 100644
--- a/drivers/dma/shdma.c
+++ b/drivers/dma/shdma.c
@@ -48,7 +48,7 @@ enum sh_dmae_desc_status {
 
 /*
  * Used for write-side mutual exclusion for the global device list,
- * read-side synchronization by way of RCU.
+ * read-side synchronization by way of RCU, and per-controller data.
  */
 static DEFINE_SPINLOCK(sh_dmae_lock);
 static LIST_HEAD(sh_dmae_devices);
@@ -85,22 +85,35 @@ static void dmaor_write(struct sh_dmae_device *shdev, u16 data)
  */
 static void sh_dmae_ctl_stop(struct sh_dmae_device *shdev)
 {
-        unsigned short dmaor = dmaor_read(shdev);
+        unsigned short dmaor;
+        unsigned long flags;
+
+        spin_lock_irqsave(&sh_dmae_lock, flags);
 
+        dmaor = dmaor_read(shdev);
         dmaor_write(shdev, dmaor & ~(DMAOR_NMIF | DMAOR_AE | DMAOR_DME));
+
+        spin_unlock_irqrestore(&sh_dmae_lock, flags);
 }
 
 static int sh_dmae_rst(struct sh_dmae_device *shdev)
 {
         unsigned short dmaor;
+        unsigned long flags;
 
-        sh_dmae_ctl_stop(shdev);
-        dmaor = dmaor_read(shdev) | shdev->pdata->dmaor_init;
+        spin_lock_irqsave(&sh_dmae_lock, flags);
 
-        dmaor_write(shdev, dmaor);
-        if (dmaor_read(shdev) & (DMAOR_AE | DMAOR_NMIF)) {
-                pr_warning("dma-sh: Can't initialize DMAOR.\n");
-                return -EINVAL;
+        dmaor = dmaor_read(shdev) & ~(DMAOR_NMIF | DMAOR_AE | DMAOR_DME);
+
+        dmaor_write(shdev, dmaor | shdev->pdata->dmaor_init);
+
+        dmaor = dmaor_read(shdev);
+
+        spin_unlock_irqrestore(&sh_dmae_lock, flags);
+
+        if (dmaor & (DMAOR_AE | DMAOR_NMIF)) {
+                dev_warn(shdev->common.dev, "Can't initialize DMAOR.\n");
+                return -EIO;
         }
         return 0;
 }
@@ -184,7 +197,7 @@ static void dmae_init(struct sh_dmae_chan *sh_chan)
 
 static int dmae_set_chcr(struct sh_dmae_chan *sh_chan, u32 val)
 {
-        /* When DMA was working, can not set data to CHCR */
+        /* If DMA is active, cannot set CHCR. TODO: remove this superfluous check */
         if (dmae_is_busy(sh_chan))
                 return -EBUSY;
 
@@ -374,7 +387,12 @@ static void sh_dmae_free_chan_resources(struct dma_chan *chan)
         LIST_HEAD(list);
         int descs = sh_chan->descs_allocated;
 
+        /* Protect against ISR */
+        spin_lock_irq(&sh_chan->desc_lock);
         dmae_halt(sh_chan);
+        spin_unlock_irq(&sh_chan->desc_lock);
+
+        /* Now no new interrupts will occur */
 
         /* Prepared and not submitted descriptors can still be on the queue */
         if (!list_empty(&sh_chan->ld_queue))
@@ -384,6 +402,7 @@ static void sh_dmae_free_chan_resources(struct dma_chan *chan)
                 /* The caller is holding dma_list_mutex */
                 struct sh_dmae_slave *param = chan->private;
                 clear_bit(param->slave_id, sh_dmae_slave_used);
+                chan->private = NULL;
         }
 
         spin_lock_bh(&sh_chan->desc_lock);
@@ -563,8 +582,6 @@ static struct dma_async_tx_descriptor *sh_dmae_prep_memcpy(
         if (!chan || !len)
                 return NULL;
 
-        chan->private = NULL;
-
         sh_chan = to_sh_chan(chan);
 
         sg_init_table(&sg, 1);
@@ -620,9 +637,9 @@ static int sh_dmae_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
         if (!chan)
                 return -EINVAL;
 
+        spin_lock_bh(&sh_chan->desc_lock);
         dmae_halt(sh_chan);
 
-        spin_lock_bh(&sh_chan->desc_lock);
         if (!list_empty(&sh_chan->ld_queue)) {
                 /* Record partial transfer */
                 struct sh_desc *desc = list_entry(sh_chan->ld_queue.next,
@@ -716,6 +733,14 @@ static dma_async_tx_callback __ld_cleanup(struct sh_dmae_chan *sh_chan, bool all
                         list_move(&desc->node, &sh_chan->ld_free);
                 }
         }
+
+        if (all && !callback)
+                /*
+                 * Terminating and the loop completed normally: forgive
+                 * uncompleted cookies
+                 */
+                sh_chan->completed_cookie = sh_chan->common.cookie;
+
         spin_unlock_bh(&sh_chan->desc_lock);
 
         if (callback)
@@ -733,10 +758,6 @@ static void sh_dmae_chan_ld_cleanup(struct sh_dmae_chan *sh_chan, bool all)
 {
         while (__ld_cleanup(sh_chan, all))
                 ;
-
-        if (all)
-                /* Terminating - forgive uncompleted cookies */
-                sh_chan->completed_cookie = sh_chan->common.cookie;
 }
 
 static void sh_chan_xfer_ld_queue(struct sh_dmae_chan *sh_chan)
@@ -782,8 +803,10 @@ static enum dma_status sh_dmae_tx_status(struct dma_chan *chan,
 
         sh_dmae_chan_ld_cleanup(sh_chan, false);
 
-        last_used = chan->cookie;
+        /* First read completed cookie to avoid a skew */
         last_complete = sh_chan->completed_cookie;
+        rmb();
+        last_used = chan->cookie;
         BUG_ON(last_complete < 0);
         dma_set_tx_state(txstate, last_complete, last_used, 0);
 
@@ -813,8 +836,12 @@ static enum dma_status sh_dmae_tx_status(struct dma_chan *chan,
 static irqreturn_t sh_dmae_interrupt(int irq, void *data)
 {
         irqreturn_t ret = IRQ_NONE;
-        struct sh_dmae_chan *sh_chan = (struct sh_dmae_chan *)data;
-        u32 chcr = sh_dmae_readl(sh_chan, CHCR);
+        struct sh_dmae_chan *sh_chan = data;
+        u32 chcr;
+
+        spin_lock(&sh_chan->desc_lock);
+
+        chcr = sh_dmae_readl(sh_chan, CHCR);
 
         if (chcr & CHCR_TE) {
                 /* DMA stop */
@@ -824,10 +851,13 @@ static irqreturn_t sh_dmae_interrupt(int irq, void *data)
                 tasklet_schedule(&sh_chan->tasklet);
         }
 
+        spin_unlock(&sh_chan->desc_lock);
+
         return ret;
 }
 
-static unsigned int sh_dmae_reset(struct sh_dmae_device *shdev)
+/* Called from error IRQ or NMI */
+static bool sh_dmae_reset(struct sh_dmae_device *shdev)
 {
         unsigned int handled = 0;
         int i;
@@ -839,22 +869,32 @@ static unsigned int sh_dmae_reset(struct sh_dmae_device *shdev)
         for (i = 0; i < SH_DMAC_MAX_CHANNELS; i++) {
                 struct sh_dmae_chan *sh_chan = shdev->chan[i];
                 struct sh_desc *desc;
+                LIST_HEAD(dl);
 
                 if (!sh_chan)
                         continue;
 
+                spin_lock(&sh_chan->desc_lock);
+
                 /* Stop the channel */
                 dmae_halt(sh_chan);
 
+                list_splice_init(&sh_chan->ld_queue, &dl);
+
+                spin_unlock(&sh_chan->desc_lock);
+
                 /* Complete all  */
-                list_for_each_entry(desc, &sh_chan->ld_queue, node) {
+                list_for_each_entry(desc, &dl, node) {
                         struct dma_async_tx_descriptor *tx = &desc->async_tx;
                         desc->mark = DESC_IDLE;
                         if (tx->callback)
                                 tx->callback(tx->callback_param);
                 }
 
-                list_splice_init(&sh_chan->ld_queue, &sh_chan->ld_free);
+                spin_lock(&sh_chan->desc_lock);
+                list_splice(&dl, &sh_chan->ld_free);
+                spin_unlock(&sh_chan->desc_lock);
+
                 handled++;
         }
 
@@ -867,10 +907,11 @@ static irqreturn_t sh_dmae_err(int irq, void *data)
 {
         struct sh_dmae_device *shdev = data;
 
-        if (dmaor_read(shdev) & DMAOR_AE)
-                return IRQ_RETVAL(sh_dmae_reset(data));
-        else
+        if (!(dmaor_read(shdev) & DMAOR_AE))
                 return IRQ_NONE;
+
+        sh_dmae_reset(data);
+        return IRQ_HANDLED;
 }
 
 static void dmae_do_tasklet(unsigned long data)
@@ -902,17 +943,11 @@ static void dmae_do_tasklet(unsigned long data)
 
 static bool sh_dmae_nmi_notify(struct sh_dmae_device *shdev)
 {
-        unsigned int handled;
-
         /* Fast path out if NMIF is not asserted for this controller */
         if ((dmaor_read(shdev) & DMAOR_NMIF) == 0)
                 return false;
 
-        handled = sh_dmae_reset(shdev);
-        if (handled)
-                return true;
-
-        return false;
+        return sh_dmae_reset(shdev);
 }
 
 static int sh_dmae_nmi_handler(struct notifier_block *self,
@@ -982,9 +1017,6 @@ static int __devinit sh_dmae_chan_probe(struct sh_dmae_device *shdev, int id,
         tasklet_init(&new_sh_chan->tasklet, dmae_do_tasklet,
                         (unsigned long)new_sh_chan);
 
-        /* Init the channel */
-        dmae_init(new_sh_chan);
-
         spin_lock_init(&new_sh_chan->desc_lock);
 
         /* Init descripter manage list */
@@ -1045,7 +1077,6 @@ static int __init sh_dmae_probe(struct platform_device *pdev)
         struct sh_dmae_pdata *pdata = pdev->dev.platform_data;
         unsigned long irqflags = IRQF_DISABLED,
                 chan_flag[SH_DMAC_MAX_CHANNELS] = {};
-        unsigned long flags;
         int errirq, chan_irq[SH_DMAC_MAX_CHANNELS];
         int err, i, irq_cnt = 0, irqres = 0;
         struct sh_dmae_device *shdev;
@@ -1111,11 +1142,11 @@ static int __init sh_dmae_probe(struct platform_device *pdev)
         pm_runtime_enable(&pdev->dev);
         pm_runtime_get_sync(&pdev->dev);
 
-        spin_lock_irqsave(&sh_dmae_lock, flags);
+        spin_lock_irq(&sh_dmae_lock);
         list_add_tail_rcu(&shdev->node, &sh_dmae_devices);
-        spin_unlock_irqrestore(&sh_dmae_lock, flags);
+        spin_unlock_irq(&sh_dmae_lock);
 
-        /* reset dma controller */
+        /* reset dma controller - only needed as a test */
         err = sh_dmae_rst(shdev);
         if (err)
                 goto rst_err;
@@ -1218,15 +1249,18 @@ eirqres:
 eirq_err:
 #endif
 rst_err:
-        spin_lock_irqsave(&sh_dmae_lock, flags);
+        spin_lock_irq(&sh_dmae_lock);
         list_del_rcu(&shdev->node);
-        spin_unlock_irqrestore(&sh_dmae_lock, flags);
+        spin_unlock_irq(&sh_dmae_lock);
 
         pm_runtime_put(&pdev->dev);
+        pm_runtime_disable(&pdev->dev);
+
         if (dmars)
                 iounmap(shdev->dmars);
 emapdmars:
         iounmap(shdev->chan_reg);
+        synchronize_rcu();
 emapchan:
         kfree(shdev);
 ealloc:
@@ -1242,7 +1276,6 @@ static int __exit sh_dmae_remove(struct platform_device *pdev)
 {
         struct sh_dmae_device *shdev = platform_get_drvdata(pdev);
         struct resource *res;
-        unsigned long flags;
         int errirq = platform_get_irq(pdev, 0);
 
         dma_async_device_unregister(&shdev->common);
@@ -1250,9 +1283,9 @@ static int __exit sh_dmae_remove(struct platform_device *pdev)
         if (errirq > 0)
                 free_irq(errirq, shdev);
 
-        spin_lock_irqsave(&sh_dmae_lock, flags);
+        spin_lock_irq(&sh_dmae_lock);
         list_del_rcu(&shdev->node);
-        spin_unlock_irqrestore(&sh_dmae_lock, flags);
+        spin_unlock_irq(&sh_dmae_lock);
 
         /* channel data remove */
         sh_dmae_chan_remove(shdev);
@@ -1263,6 +1296,7 @@ static int __exit sh_dmae_remove(struct platform_device *pdev)
                 iounmap(shdev->dmars);
         iounmap(shdev->chan_reg);
 
+        synchronize_rcu();
         kfree(shdev);
 
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -1281,12 +1315,78 @@ static void sh_dmae_shutdown(struct platform_device *pdev)
         sh_dmae_ctl_stop(shdev);
 }
 
+static int sh_dmae_runtime_suspend(struct device *dev)
+{
+        return 0;
+}
+
+static int sh_dmae_runtime_resume(struct device *dev)
+{
+        struct sh_dmae_device *shdev = dev_get_drvdata(dev);
+
+        return sh_dmae_rst(shdev);
+}
+
+#ifdef CONFIG_PM
+static int sh_dmae_suspend(struct device *dev)
+{
+        struct sh_dmae_device *shdev = dev_get_drvdata(dev);
+        int i;
+
+        for (i = 0; i < shdev->pdata->channel_num; i++) {
+                struct sh_dmae_chan *sh_chan = shdev->chan[i];
+                if (sh_chan->descs_allocated)
+                        sh_chan->pm_error = pm_runtime_put_sync(dev);
+        }
+
+        return 0;
+}
+
+static int sh_dmae_resume(struct device *dev)
+{
+        struct sh_dmae_device *shdev = dev_get_drvdata(dev);
+        int i;
+
+        for (i = 0; i < shdev->pdata->channel_num; i++) {
+                struct sh_dmae_chan *sh_chan = shdev->chan[i];
+                struct sh_dmae_slave *param = sh_chan->common.private;
+
+                if (!sh_chan->descs_allocated)
+                        continue;
+
+                if (!sh_chan->pm_error)
+                        pm_runtime_get_sync(dev);
+
+                if (param) {
+                        const struct sh_dmae_slave_config *cfg = param->config;
+                        dmae_set_dmars(sh_chan, cfg->mid_rid);
+                        dmae_set_chcr(sh_chan, cfg->chcr);
+                } else {
+                        dmae_init(sh_chan);
+                }
+        }
+
+        return 0;
+}
+#else
+#define sh_dmae_suspend NULL
+#define sh_dmae_resume NULL
+#endif
+
+const struct dev_pm_ops sh_dmae_pm = {
+        .suspend                = sh_dmae_suspend,
+        .resume                 = sh_dmae_resume,
+        .runtime_suspend        = sh_dmae_runtime_suspend,
+        .runtime_resume         = sh_dmae_runtime_resume,
+};
+
 static struct platform_driver sh_dmae_driver = {
         .remove         = __exit_p(sh_dmae_remove),
         .shutdown       = sh_dmae_shutdown,
         .driver = {
                 .owner  = THIS_MODULE,
                 .name   = "sh-dma-engine",
+                .pm     = &sh_dmae_pm,
         },
 };
 
diff --git a/drivers/dma/shdma.h b/drivers/dma/shdma.h
index 52e4fb173805..3f9d3cd06584 100644
--- a/drivers/dma/shdma.h
+++ b/drivers/dma/shdma.h
@@ -37,6 +37,7 @@ struct sh_dmae_chan {
         int id;                         /* Raw id of this channel */
         u32 __iomem *base;
         char dev_id[16];                /* unique name per DMAC of channel */
+        int pm_error;
 };
 
 struct sh_dmae_device {
diff --git a/drivers/i2c/busses/i2c-sh_mobile.c b/drivers/i2c/busses/i2c-sh_mobile.c
index 2707f5e17158..81ccd7875627 100644
--- a/drivers/i2c/busses/i2c-sh_mobile.c
+++ b/drivers/i2c/busses/i2c-sh_mobile.c
@@ -729,3 +729,4 @@ module_exit(sh_mobile_i2c_adap_exit);
 MODULE_DESCRIPTION("SuperH Mobile I2C Bus Controller driver");
 MODULE_AUTHOR("Magnus Damm");
 MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:i2c-sh_mobile");
diff --git a/drivers/sh/clk/cpg.c b/drivers/sh/clk/cpg.c
index 6172335ae323..82dd6fb17838 100644
--- a/drivers/sh/clk/cpg.c
+++ b/drivers/sh/clk/cpg.c
@@ -105,7 +105,7 @@ static int sh_clk_div6_set_parent(struct clk *clk, struct clk *parent)
 
         /* Rebuild the frequency table */
         clk_rate_table_build(clk, clk->freq_table, table->nr_divisors,
-                             table, &clk->arch_flags);
+                             table, NULL);
 
         return 0;
 }
diff --git a/drivers/sh/intc/virq.c b/drivers/sh/intc/virq.c
index ce5f81d7cc6b..1e6e2d0353ea 100644
--- a/drivers/sh/intc/virq.c
+++ b/drivers/sh/intc/virq.c
@@ -235,6 +235,11 @@ restart:
 
                 irq_set_handler_data(irq, (void *)entry->handle);
 
+                /*
+                 * Set the virtual IRQ as non-threadable.
+                 */
+                irq_set_nothread(irq);
+
                 irq_set_chained_handler(entry->pirq, intc_virq_handler);
                 add_virq_to_pirq(entry->pirq, irq);
 
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index f35b8fb94b83..ebd8629c108d 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -41,6 +41,7 @@
 #include <linux/platform_device.h>
 #include <linux/serial_sci.h>
 #include <linux/notifier.h>
+#include <linux/pm_runtime.h>
 #include <linux/cpufreq.h>
 #include <linux/clk.h>
 #include <linux/ctype.h>
@@ -560,6 +561,9 @@ static void sci_break_timer(unsigned long data)
 {
         struct sci_port *port = (struct sci_port *)data;
 
+        if (port->enable)
+                port->enable(&port->port);
+
         if (sci_rxd_in(&port->port) == 0) {
                 port->break_flag = 1;
                 sci_schedule_break_timer(port);
@@ -569,6 +573,9 @@ static void sci_break_timer(unsigned long data)
                 sci_schedule_break_timer(port);
         } else
                 port->break_flag = 0;
+
+        if (port->disable)
+                port->disable(&port->port);
 }
 
 static int sci_handle_errors(struct uart_port *port)
@@ -837,6 +844,8 @@ static void sci_clk_enable(struct uart_port *port)
 {
         struct sci_port *sci_port = to_sci_port(port);
 
+        pm_runtime_get_sync(port->dev);
+
         clk_enable(sci_port->iclk);
         sci_port->port.uartclk = clk_get_rate(sci_port->iclk);
         clk_enable(sci_port->fclk);
@@ -848,6 +857,8 @@ static void sci_clk_disable(struct uart_port *port)
 
         clk_disable(sci_port->fclk);
         clk_disable(sci_port->iclk);
+
+        pm_runtime_put_sync(port->dev);
 }
 
 static int sci_request_irq(struct sci_port *port)
@@ -1756,6 +1767,8 @@ static int __devinit sci_init_single(struct platform_device *dev,
                 sci_port->enable = sci_clk_enable;
                 sci_port->disable = sci_clk_disable;
                 port->dev = &dev->dev;
+
+                pm_runtime_enable(&dev->dev);
         }
 
         sci_port->break_timer.data = (unsigned long)sci_port;
@@ -1775,7 +1788,7 @@ static int __devinit sci_init_single(struct platform_device *dev,
          *
          * For the muxed case there's nothing more to do.
          */
-        port->irq               = p->irqs[SCIx_TXI_IRQ];
+        port->irq               = p->irqs[SCIx_RXI_IRQ];
 
         if (p->dma_dev)
                 dev_dbg(port->dev, "DMA device %p, tx %d, rx %d\n",
@@ -1936,6 +1949,7 @@ static int sci_remove(struct platform_device *dev)
         clk_put(port->iclk);
         clk_put(port->fclk);
 
+        pm_runtime_disable(&dev->dev);
         return 0;
 }
 
diff --git a/drivers/tty/serial/sh-sci.h b/drivers/tty/serial/sh-sci.h
index 5fefed53fa42..b04d937c9110 100644
--- a/drivers/tty/serial/sh-sci.h
+++ b/drivers/tty/serial/sh-sci.h
@@ -270,12 +270,12 @@
 #elif defined(CONFIG_CPU_SUBTYPE_SH7705) || \
       defined(CONFIG_CPU_SUBTYPE_SH7720) || \
       defined(CONFIG_CPU_SUBTYPE_SH7721) || \
-      defined(CONFIG_ARCH_SH73A0) || \
-      defined(CONFIG_ARCH_SH7367) || \
-      defined(CONFIG_ARCH_SH7377)
+      defined(CONFIG_ARCH_SH7367)
 #define SCIF_FNS(name, scif_offset, scif_size) \
   CPU_SCIF_FNS(name, scif_offset, scif_size)
-#elif defined(CONFIG_ARCH_SH7372)
+#elif defined(CONFIG_ARCH_SH7377) || \
+      defined(CONFIG_ARCH_SH7372) || \
+      defined(CONFIG_ARCH_SH73A0)
 #define SCIx_FNS(name, sh4_scifa_offset, sh4_scifa_size, sh4_scifb_offset, sh4_scifb_size) \
   CPU_SCIx_FNS(name, sh4_scifa_offset, sh4_scifa_size, sh4_scifb_offset, sh4_scifb_size)
 #define SCIF_FNS(name, scif_offset, scif_size) \
@@ -313,9 +313,7 @@
 #if defined(CONFIG_CPU_SUBTYPE_SH7705) || \
     defined(CONFIG_CPU_SUBTYPE_SH7720) || \
     defined(CONFIG_CPU_SUBTYPE_SH7721) || \
-    defined(CONFIG_ARCH_SH73A0) || \
-    defined(CONFIG_ARCH_SH7367) || \
-    defined(CONFIG_ARCH_SH7377)
+    defined(CONFIG_ARCH_SH7367)
 
 SCIF_FNS(SCSMR,  0x00, 16)
 SCIF_FNS(SCBRR,  0x04,  8)
@@ -326,7 +324,9 @@ SCIF_FNS(SCFDR,  0x1c, 16)
 SCIF_FNS(SCxTDR, 0x20,  8)
 SCIF_FNS(SCxRDR, 0x24,  8)
 SCIF_FNS(SCLSR,  0x00,  0)
-#elif defined(CONFIG_ARCH_SH7372)
+#elif defined(CONFIG_ARCH_SH7377) || \
+      defined(CONFIG_ARCH_SH7372) || \
+      defined(CONFIG_ARCH_SH73A0)
 SCIF_FNS(SCSMR,  0x00, 16)
 SCIF_FNS(SCBRR,  0x04,  8)
 SCIF_FNS(SCSCR,  0x08, 16)