[MMC] Add mmc_hostname() macro

mmc_hostname() returns a pointer to the hostname for the mmc_host.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

drivers/mmc/mmc.c

@@ -361,7 +361,7 @@ static void mmc_decode_cid(struct mmc_card *card)
 
 	default:
 		printk("%s: card has unknown MMCA version %d\n",
-			card->host->host_name, card->csd.mmca_vsn);
+			mmc_hostname(card->host), card->csd.mmca_vsn);
 		mmc_card_set_bad(card);
 		break;
 	}
@@ -383,7 +383,7 @@ static void mmc_decode_csd(struct mmc_card *card)
 	csd_struct = UNSTUFF_BITS(resp, 126, 2);
 	if (csd_struct != 1 && csd_struct != 2) {
 		printk("%s: unrecognised CSD structure version %d\n",
-			card->host->host_name, csd_struct);
+			mmc_hostname(card->host), csd_struct);
 		mmc_card_set_bad(card);
 		return;
 	}
@@ -551,7 +551,7 @@ static void mmc_discover_cards(struct mmc_host *host)
 		}
 		if (err != MMC_ERR_NONE) {
 			printk(KERN_ERR "%s: error requesting CID: %d\n",
-				host->host_name, err);
+				mmc_hostname(host), err);
 			break;
 		}
 

drivers/mmc/mmc_sysfs.c

@@ -206,7 +206,7 @@ void mmc_init_card(struct mmc_card *card, struct mmc_host *host)
 int mmc_register_card(struct mmc_card *card)
 {
 	snprintf(card->dev.bus_id, sizeof(card->dev.bus_id),
-		 "%s:%04x", card->host->host_name, card->rca);
+		 "%s:%04x", mmc_hostname(card->host), card->rca);
 
 	return device_add(&card->dev);
 }

drivers/mmc/mmci.c

@@ -34,7 +34,7 @@
 
 #ifdef CONFIG_MMC_DEBUG
 #define DBG(host,fmt,args...)	\
-	pr_debug("%s: %s: " fmt, host->mmc->host_name, __func__ , args)
+	pr_debug("%s: %s: " fmt, mmc_hostname(host->mmc), __func__ , args)
 #else
 #define DBG(host,fmt,args...)	do { } while (0)
 #endif
@@ -541,7 +541,7 @@ static int mmci_probe(struct amba_device *dev, void *id)
 	mmc_add_host(mmc);
 
 	printk(KERN_INFO "%s: MMCI rev %x cfg %02x at 0x%08lx irq %d,%d\n",
-		mmc->host_name, amba_rev(dev), amba_config(dev),
+		mmc_hostname(mmc), amba_rev(dev), amba_config(dev),
 		dev->res.start, dev->irq[0], dev->irq[1]);
 
 	init_timer(&host->timer);

drivers/mmc/wbsd.c

@@ -1796,7 +1796,7 @@ static int __devinit wbsd_init(struct device* dev, int base, int irq, int dma,
 	
 	mmc_add_host(mmc);
 
-	printk(KERN_INFO "%s: W83L51xD", mmc->host_name);
+	printk(KERN_INFO "%s: W83L51xD", mmc_hostname(mmc));
 	if (host->chip_id != 0)
 		printk(" id %x", (int)host->chip_id);
 	printk(" at 0x%x irq %d", (int)host->base, (int)host->irq);

include/linux/mmc/host.h

@@ -97,6 +97,7 @@ extern void mmc_free_host(struct mmc_host *);
 
 #define mmc_priv(x)	((void *)((x) + 1))
 #define mmc_dev(x)	((x)->dev)
+#define mmc_hostname(x)	((x)->host_name)
 
 extern int mmc_suspend_host(struct mmc_host *, pm_message_t);
 extern int mmc_resume_host(struct mmc_host *);