mmc: tmio/sdhi: break out interrupt request/free

Move request_irq()/free_irq() from the shared code
in tmio_mmc.c into the SDHI/tmio specific portion
in sh_mobile_sdhi.c and tmio_mmc_pio.c.

This is ground work to allow us to adjust the SDHI
code with IRQ flags and number of interupt sources.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>

4 files changed, 37 insertions, 21 deletions

diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c
index f60e954dec6..9ee51ace6f7 100644
--- a/drivers/mmc/host/sh_mobile_sdhi.c
+++ b/drivers/mmc/host/sh_mobile_sdhi.c
@@ -62,7 +62,7 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
         struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
         struct tmio_mmc_host *host;
         char clk_name[8];
-        int ret;
+        int irq, ret;
 
         priv = kzalloc(sizeof(struct sh_mobile_sdhi), GFP_KERNEL);
         if (priv == NULL) {
@@ -116,11 +116,24 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
         if (ret < 0)
                 goto eprobe;
 
+        irq = platform_get_irq(pdev, 0);
+        if (irq < 0) {
+                ret = irq;
+                goto eirq;
+        }
+
+        ret = request_irq(irq, tmio_mmc_irq, IRQF_DISABLED |
+                          IRQF_TRIGGER_FALLING, dev_name(&pdev->dev), host);
+        if (ret)
+                goto eirq;
+
         pr_info("%s at 0x%08lx irq %d\n", mmc_hostname(host->mmc),
-                (unsigned long)host->ctl, host->irq);
+                (unsigned long)host->ctl, irq);
 
         return ret;
 
+eirq:
+        tmio_mmc_host_remove(host);
 eprobe:
         clk_disable(priv->clk);
         clk_put(priv->clk);
@@ -135,6 +148,7 @@ static int sh_mobile_sdhi_remove(struct platform_device *pdev)
         struct tmio_mmc_host *host = mmc_priv(mmc);
         struct sh_mobile_sdhi *priv = container_of(host->pdata, struct sh_mobile_sdhi, mmc_data);
 
+        free_irq(platform_get_irq(pdev, 0), host);
         tmio_mmc_host_remove(host);
         clk_disable(priv->clk);
         clk_put(priv->clk);
diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c
index be739f7ef42..14479f9ef53 100644
--- a/drivers/mmc/host/tmio_mmc.c
+++ b/drivers/mmc/host/tmio_mmc.c
@@ -64,7 +64,7 @@ static int __devinit tmio_mmc_probe(struct platform_device *pdev)
         const struct mfd_cell *cell = mfd_get_cell(pdev);
         struct tmio_mmc_data *pdata;
         struct tmio_mmc_host *host;
-        int ret = -EINVAL;
+        int ret = -EINVAL, irq;
 
         if (pdev->num_resources != 2)
                 goto out;
@@ -73,6 +73,12 @@ static int __devinit tmio_mmc_probe(struct platform_device *pdev)
         if (!pdata || !pdata->hclk)
                 goto out;
 
+        irq = platform_get_irq(pdev, 0);
+        if (irq < 0) {
+                ret = irq;
+                goto out;
+        }
+
         /* Tell the MFD core we are ready to be enabled */
         if (cell->enable) {
                 ret = cell->enable(pdev);
@@ -84,11 +90,18 @@ static int __devinit tmio_mmc_probe(struct platform_device *pdev)
         if (ret)
                 goto cell_disable;
 
+        ret = request_irq(irq, tmio_mmc_irq, IRQF_DISABLED |
+                          IRQF_TRIGGER_FALLING, dev_name(&pdev->dev), host);
+        if (ret)
+                goto host_remove;
+
         pr_info("%s at 0x%08lx irq %d\n", mmc_hostname(host->mmc),
-                (unsigned long)host->ctl, host->irq);
+                (unsigned long)host->ctl, irq);
 
         return 0;
 
+host_remove:
+        tmio_mmc_host_remove(host);
 cell_disable:
         if (cell->disable)
                 cell->disable(pdev);
@@ -104,7 +117,9 @@ static int __devexit tmio_mmc_remove(struct platform_device *pdev)
         platform_set_drvdata(pdev, NULL);
 
         if (mmc) {
-                tmio_mmc_host_remove(mmc_priv(mmc));
+                struct tmio_mmc_host *host = mmc_priv(mmc);
+                free_irq(platform_get_irq(pdev, 0), host);
+                tmio_mmc_host_remove(host);
                 if (cell->disable)
                         cell->disable(pdev);
         }
diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h
index 58138a20387..c6bf726c8f4 100644
--- a/drivers/mmc/host/tmio_mmc.h
+++ b/drivers/mmc/host/tmio_mmc.h
@@ -45,7 +45,6 @@ struct tmio_mmc_host {
         struct mmc_request      *mrq;
         struct mmc_data         *data;
         struct mmc_host         *mmc;
-        int                     irq;
         unsigned int            sdio_irq_enabled;
 
         /* Callbacks for clock / power control */
@@ -86,6 +85,7 @@ void tmio_mmc_do_data_irq(struct tmio_mmc_host *host);
 
 void tmio_mmc_enable_mmc_irqs(struct tmio_mmc_host *host, u32 i);
 void tmio_mmc_disable_mmc_irqs(struct tmio_mmc_host *host, u32 i);
+irqreturn_t tmio_mmc_irq(int irq, void *devid);
 
 static inline char *tmio_mmc_kmap_atomic(struct scatterlist *sg,
                                          unsigned long *flags)
diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c
index ea6ade31bcc..af5d4f6d223 100644
--- a/drivers/mmc/host/tmio_mmc_pio.c
+++ b/drivers/mmc/host/tmio_mmc_pio.c
@@ -564,7 +564,7 @@ out:
         spin_unlock(&host->lock);
 }
 
-static irqreturn_t tmio_mmc_irq(int irq, void *devid)
+irqreturn_t tmio_mmc_irq(int irq, void *devid)
 {
         struct tmio_mmc_host *host = devid;
         struct tmio_mmc_data *pdata = host->pdata;
@@ -659,6 +659,7 @@ static irqreturn_t tmio_mmc_irq(int irq, void *devid)
 out:
         return IRQ_HANDLED;
 }
+EXPORT_SYMBOL(tmio_mmc_irq);
 
 static int tmio_mmc_start_data(struct tmio_mmc_host *host,
         struct mmc_data *data)
@@ -893,21 +894,10 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host,
         tmio_mmc_clk_stop(_host);
         tmio_mmc_reset(_host);
 
-        ret = platform_get_irq(pdev, 0);
-        if (ret < 0)
-                goto pm_suspend;
-
-        _host->irq = ret;
-
         tmio_mmc_disable_mmc_irqs(_host, TMIO_MASK_ALL);
         if (pdata->flags & TMIO_MMC_SDIO_IRQ)
                 tmio_mmc_enable_sdio_irq(mmc, 0);
 
-        ret = request_irq(_host->irq, tmio_mmc_irq, IRQF_DISABLED |
-                IRQF_TRIGGER_FALLING, dev_name(&pdev->dev), _host);
-        if (ret)
-                goto pm_suspend;
-
         spin_lock_init(&_host->lock);
 
         /* Init delayed work for request timeouts */
@@ -933,8 +923,6 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host,
 
         return 0;
 
-pm_suspend:
-        pm_runtime_suspend(&pdev->dev);
 pm_disable:
         pm_runtime_disable(&pdev->dev);
         iounmap(_host->ctl);
@@ -952,7 +940,6 @@ void tmio_mmc_host_remove(struct tmio_mmc_host *host)
         mmc_remove_host(host->mmc);
         cancel_delayed_work_sync(&host->delayed_reset_work);
         tmio_mmc_release_dma(host);
-        free_irq(host->irq, host);
         iounmap(host->ctl);
         mmc_free_host(host->mmc);