mmc: constify mmc_host_ops vectors

[powerpc.git] / drivers / mmc / sdhci.c

diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 4dab5ec..54990ed 100644 (file)
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -35,6 +35,8 @@ static unsigned int debug_quirks = 0;
 
 #define SDHCI_QUIRK_CLOCK_BEFORE_RESET                 (1<<0)
 #define SDHCI_QUIRK_FORCE_DMA                          (1<<1)
+/* Controller doesn't like some resets when there is no card inserted. */
+#define SDHCI_QUIRK_NO_CARD_NO_RESET                   (1<<2)
 
 static const struct pci_device_id pci_ids[] __devinitdata = {
        {
@@ -51,7 +53,8 @@ static const struct pci_device_id pci_ids[] __devinitdata = {
                .device         = PCI_DEVICE_ID_RICOH_R5C822,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
-               .driver_data    = SDHCI_QUIRK_FORCE_DMA,
+               .driver_data    = SDHCI_QUIRK_FORCE_DMA |
+                                 SDHCI_QUIRK_NO_CARD_NO_RESET,
        },
 
        {
@@ -125,6 +128,12 @@ static void sdhci_reset(struct sdhci_host *host, u8 mask)
 {
        unsigned long timeout;
 
+       if (host->chip->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) {
+               if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) &
+                       SDHCI_CARD_PRESENT))
+                       return;
+       }
+
        writeb(mask, host->ioaddr + SDHCI_SOFTWARE_RESET);
 
        if (mask & SDHCI_RESET_ALL)
@@ -717,6 +726,7 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
        } else
                sdhci_send_command(host, mrq->cmd);
 
+       mmiowb();
        spin_unlock_irqrestore(&host->lock, flags);
 }
 
@@ -753,6 +763,7 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
                ctrl &= ~SDHCI_CTRL_4BITBUS;
        writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL);
 
+       mmiowb();
        spin_unlock_irqrestore(&host->lock, flags);
 }
 
@@ -773,7 +784,7 @@ static int sdhci_get_ro(struct mmc_host *mmc)
        return !(present & SDHCI_WRITE_PROTECT);
 }
 
-static struct mmc_host_ops sdhci_ops = {
+static const struct mmc_host_ops sdhci_ops = {
        .request        = sdhci_request,
        .set_ios        = sdhci_set_ios,
        .get_ro         = sdhci_get_ro,
@@ -860,6 +871,7 @@ static void sdhci_tasklet_finish(unsigned long param)
 
        sdhci_deactivate_led(host);
 
+       mmiowb();
        spin_unlock_irqrestore(&host->lock, flags);
 
        mmc_request_done(host->mmc, mrq);
@@ -893,6 +905,7 @@ static void sdhci_timeout_timer(unsigned long data)
                }
        }
 
+       mmiowb();
        spin_unlock_irqrestore(&host->lock, flags);
 }
 
@@ -972,7 +985,7 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
        }
 }
 
-static irqreturn_t sdhci_irq(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t sdhci_irq(int irq, void *dev_id)
 {
        irqreturn_t result;
        struct sdhci_host* host = dev_id;
@@ -1030,6 +1043,7 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id, struct pt_regs *regs)
 
        result = IRQ_HANDLED;
 
+       mmiowb();
 out:
        spin_unlock(&host->lock);
 
@@ -1095,6 +1109,7 @@ static int sdhci_resume (struct pci_dev *pdev)
                if (chip->hosts[i]->flags & SDHCI_USE_DMA)
                        pci_set_master(pdev);
                sdhci_init(chip->hosts[i]);
+               mmiowb();
                ret = mmc_resume_host(chip->hosts[i]->mmc);
                if (ret)
                        return ret;
@@ -1168,6 +1183,9 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
        host = mmc_priv(mmc);
        host->mmc = mmc;
 
+       host->chip = chip;
+       chip->hosts[slot] = host;
+
        host->bar = first_bar + slot;
 
        host->addr = pci_resource_start(pdev, host->bar);
@@ -1311,7 +1329,7 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
        tasklet_init(&host->finish_tasklet,
                sdhci_tasklet_finish, (unsigned long)host);
 
-       setup_timer(&host->timer, sdhci_timeout_timer, (long)host);
+       setup_timer(&host->timer, sdhci_timeout_timer, (unsigned long)host);
 
        ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED,
                host->slot_descr, host);
@@ -1324,8 +1342,7 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
        sdhci_dumpregs(host);
 #endif
 
-       host->chip = chip;
-       chip->hosts[slot] = host;
+       mmiowb();
 
        mmc_add_host(mmc);