mmc: sdhci: introduce get_ro private write-protect hook

[net-next-2.6.git] / drivers / mmc / host / sdhci.c

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 9cb60bac19501df146a16a062b862b48b6554c1b..782c0ee3c9251c6f804087308b097b44faca4f04 100644 (file)
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1223,22 +1223,25 @@ static int sdhci_get_ro(struct mmc_host *mmc)
 {
        struct sdhci_host *host;
        unsigned long flags;
-       int present;
+       int is_readonly;
 
        host = mmc_priv(mmc);
 
        spin_lock_irqsave(&host->lock, flags);
 
        if (host->flags & SDHCI_DEVICE_DEAD)
-               present = 0;
+               is_readonly = 0;
+       else if (host->ops->get_ro)
+               is_readonly = host->ops->get_ro(host);
        else
-               present = sdhci_readl(host, SDHCI_PRESENT_STATE);
+               is_readonly = !(sdhci_readl(host, SDHCI_PRESENT_STATE)
+                               & SDHCI_WRITE_PROTECT);
 
        spin_unlock_irqrestore(&host->lock, flags);
 
-       if (host->quirks & SDHCI_QUIRK_INVERTED_WRITE_PROTECT)
-               return !!(present & SDHCI_WRITE_PROTECT);
-       return !(present & SDHCI_WRITE_PROTECT);
+       /* This quirk needs to be replaced by a callback-function later */
+       return host->quirks & SDHCI_QUIRK_INVERTED_WRITE_PROTECT ?
+               !is_readonly : is_readonly;
 }
 
 static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)