---

yaml --- r: 31657 b: refs/heads/master c: 4a96550 h: refs/heads/master i: 31655: 401e148 v: v3
git-mirror · Jul 2, 2006 · c50b3df · c50b3df
1 parent b35977f
commit c50b3df
Show file tree

Hide file tree

Showing 3 changed files with 16 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: fd2208d7c72ef5995b730f1e23b082261499e334
+refs/heads/master: 4a9655051fb1efa568e53baf5dfb21e33bad6bf6
diff --git a/trunk/drivers/mmc/sdhci.c b/trunk/drivers/mmc/sdhci.c
@@ -1073,6 +1073,7 @@ static int sdhci_resume (struct pci_dev *pdev)
 static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
 {
 	int ret;
+	unsigned int version;
 	struct sdhci_chip *chip;
 	struct mmc_host *mmc;
 	struct sdhci_host *host;
@@ -1131,6 +1132,16 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
 		goto release;
 	}
 
+	version = readw(host->ioaddr + SDHCI_HOST_VERSION);
+	version = (version & SDHCI_SPEC_VER_MASK) >> SDHCI_SPEC_VER_SHIFT;
+	if (version != 0) {
+		printk(KERN_ERR "%s: Unknown controller version (%d). "
+			"Cowardly refusing to continue.\n", host->slot_descr,
+			version);
+		ret = -ENODEV;
+		goto unmap;
+	}
+
 	caps = readl(host->ioaddr + SDHCI_CAPABILITIES);
 
 	if ((caps & SDHCI_CAN_DO_DMA) && ((pdev->class & 0x0000FF) == 0x01))

diff --git a/trunk/drivers/mmc/sdhci.h b/trunk/drivers/mmc/sdhci.h
@@ -149,6 +149,10 @@
 #define SDHCI_SLOT_INT_STATUS	0xFC
 
 #define SDHCI_HOST_VERSION	0xFE
+#define  SDHCI_VENDOR_VER_MASK	0xFF00
+#define  SDHCI_VENDOR_VER_SHIFT	8
+#define  SDHCI_SPEC_VER_MASK	0x00FF
+#define  SDHCI_SPEC_VER_SHIFT	0
 
 struct sdhci_chip;