ide: Move bus init into a function

Move this code into a separate function which returns whether the bus was
found, or not.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/block/ide.c b/drivers/block/ide.c
index 4520133..aac4462 100644 (file)
--- a/drivers/block/ide.c
+++ b/drivers/block/ide.c
@@ -679,9 +679,55 @@ static void ide_ident(struct blk_desc *dev_desc)
 #endif
 }
 
+/**
+ * ide_init_one() - Init one IDE device
+ *
+ * @bus: Bus to use
+ * Return: 0 iuf OK, -EIO if not available, -ETIMEDOUT if timed out
+ */
+static int ide_init_one(int bus)
+{
+       int dev = bus * CONFIG_SYS_IDE_MAXDEVICE / CONFIG_SYS_IDE_MAXBUS;
+       int i;
+       u8 c;
+
+       printf("Bus %d: ", bus);
+
+       /* Select device */
+       mdelay(100);
+       ide_outb(dev, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(dev));
+       mdelay(100);
+       i = 0;
+       do {
+               mdelay(10);
+
+               c = ide_inb(dev, ATA_STATUS);
+               i++;
+               if (i > (ATA_RESET_TIME * 100)) {
+                       puts("** Timeout **\n");
+                       return -ETIMEDOUT;
+               }
+               if (i >= 100 && !(i % 100))
+                       putc('.');
+       } while (c & ATA_STAT_BUSY);
+
+       if (c & (ATA_STAT_BUSY | ATA_STAT_FAULT)) {
+               puts("not available  ");
+               debug("Status = 0x%02X ", c);
+               return -EIO;
+       } else if (IS_ENABLED(CONFIG_ATAPI) && !(c & ATA_STAT_READY)) {
+               /* ATAPI Devices do not set DRDY */
+               puts("not available  ");
+               debug("Status = 0x%02X ", c);
+               return -EIO;
+       }
+       puts("OK ");
+
+       return 0;
+}
+
 static void ide_init(void)
 {
-       unsigned char c;
        int i, bus;
 
        schedule();
@@ -694,44 +740,7 @@ static void ide_init(void)
         * According to spec, this can take up to 31 seconds!
         */
        for (bus = 0; bus < CONFIG_SYS_IDE_MAXBUS; ++bus) {
-               int dev =
-                       bus * (CONFIG_SYS_IDE_MAXDEVICE /
-                              CONFIG_SYS_IDE_MAXBUS);
-
-               printf("Bus %d: ", bus);
-
-               ide_bus_ok[bus] = 0;
-
-               /* Select device */
-               mdelay(100);
-               ide_outb(dev, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(dev));
-               mdelay(100);
-               i = 0;
-               do {
-                       mdelay(10);
-
-                       c = ide_inb(dev, ATA_STATUS);
-                       i++;
-                       if (i > (ATA_RESET_TIME * 100)) {
-                               puts("** Timeout **\n");
-                               return;
-                       }
-                       if ((i >= 100) && ((i % 100) == 0))
-                               putc('.');
-
-               } while (c & ATA_STAT_BUSY);
-
-               if (c & (ATA_STAT_BUSY | ATA_STAT_FAULT)) {
-                       puts("not available  ");
-                       debug("Status = 0x%02X ", c);
-               } else if (IS_ENABLED(CONFIG_ATAPI) && !(c & ATA_STAT_READY)) {
-                       /* ATAPI Devices do not set DRDY */
-                       puts("not available  ");
-                       debug("Status = 0x%02X ", c);
-               } else {
-                       puts("OK ");
-                       ide_bus_ok[bus] = 1;
-               }
+               ide_bus_ok[bus] = !ide_init_one(bus);
                schedule();
        }