i2c: i801: Move i801_wait_intr and i801_wait_byte_done in the code

JIRA: https://issues.redhat.com/browse/RHEL-113184

commit e5befb5
Author: Heiner Kallweit <hkallweit1@gmail.com>
Date:   Fri Feb 21 21:29:23 2025 +0100

    i2c: i801: Move i801_wait_intr and i801_wait_byte_done in the code

    Move both functions to avoid forward declarations in a subsequent patch.

    Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
    Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
    Link: https://lore.kernel.org/r/a60ee54b-c5e8-4bdb-9f1f-8889f4dcd114@gmail.com

Signed-off-by: Steve Best <sbest@redhat.com>

Author: sfbest

drivers/i2c/busses/i2c-i801.c

@@ -337,6 +337,40 @@ MODULE_PARM_DESC(disable_features, "Disable selected driver features:\n"
 	"\t\t  0x10  don't use interrupts\n"
 	"\t\t  0x20  disable SMBus Host Notify ");
 
+/* Wait for BUSY being cleared and either INTR or an error flag being set */
+static int i801_wait_intr(struct i801_priv *priv)
+{
+	unsigned long timeout = jiffies + priv->adapter.timeout;
+	int status, busy;
+
+	do {
+		usleep_range(250, 500);
+		status = inb_p(SMBHSTSTS(priv));
+		busy = status & SMBHSTSTS_HOST_BUSY;
+		status &= STATUS_ERROR_FLAGS | SMBHSTSTS_INTR;
+		if (!busy && status)
+			return status & STATUS_ERROR_FLAGS;
+	} while (time_is_after_eq_jiffies(timeout));
+
+	return -ETIMEDOUT;
+}
+
+/* Wait for either BYTE_DONE or an error flag being set */
+static int i801_wait_byte_done(struct i801_priv *priv)
+{
+	unsigned long timeout = jiffies + priv->adapter.timeout;
+	int status;
+
+	do {
+		usleep_range(250, 500);
+		status = inb_p(SMBHSTSTS(priv));
+		if (status & (STATUS_ERROR_FLAGS | SMBHSTSTS_BYTE_DONE))
+			return status & STATUS_ERROR_FLAGS;
+	} while (time_is_after_eq_jiffies(timeout));
+
+	return -ETIMEDOUT;
+}
+
 static int i801_get_block_len(struct i801_priv *priv)
 {
 	u8 len = inb_p(SMBHSTDAT0(priv));
@@ -453,40 +487,6 @@ static int i801_check_post(struct i801_priv *priv, int status)
 	return result;
 }
 
-/* Wait for BUSY being cleared and either INTR or an error flag being set */
-static int i801_wait_intr(struct i801_priv *priv)
-{
-	unsigned long timeout = jiffies + priv->adapter.timeout;
-	int status, busy;
-
-	do {
-		usleep_range(250, 500);
-		status = inb_p(SMBHSTSTS(priv));
-		busy = status & SMBHSTSTS_HOST_BUSY;
-		status &= STATUS_ERROR_FLAGS | SMBHSTSTS_INTR;
-		if (!busy && status)
-			return status & STATUS_ERROR_FLAGS;
-	} while (time_is_after_eq_jiffies(timeout));
-
-	return -ETIMEDOUT;
-}
-
-/* Wait for either BYTE_DONE or an error flag being set */
-static int i801_wait_byte_done(struct i801_priv *priv)
-{
-	unsigned long timeout = jiffies + priv->adapter.timeout;
-	int status;
-
-	do {
-		usleep_range(250, 500);
-		status = inb_p(SMBHSTSTS(priv));
-		if (status & (STATUS_ERROR_FLAGS | SMBHSTSTS_BYTE_DONE))
-			return status & STATUS_ERROR_FLAGS;
-	} while (time_is_after_eq_jiffies(timeout));
-
-	return -ETIMEDOUT;
-}
-
 static int i801_transaction(struct i801_priv *priv, int xact)
 {
 	unsigned long result;