mmc: tmio: Extract bus_width modifications to a separate function

Move code for bus_width modification, out of the ->set_ios() callback
and into a separate function, to simplify code.
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Acked-by: NGeert Uytterhoeven <geert+renesas@glider.be>

drivers/mmc/host/tmio_mmc_pio.c

@@ -831,6 +831,19 @@ static void tmio_mmc_power_off(struct tmio_mmc_host *host)
 		host->set_pwr(host->pdev, 0);
 }
 
+static void tmio_mmc_set_bus_width(struct tmio_mmc_host *host,
+				unsigned char bus_width)
+{
+	switch (bus_width) {
+	case MMC_BUS_WIDTH_1:
+		sd_ctrl_write16(host, CTL_SD_MEM_CARD_OPT, 0x80e0);
+		break;
+	case MMC_BUS_WIDTH_4:
+		sd_ctrl_write16(host, CTL_SD_MEM_CARD_OPT, 0x00e0);
+		break;
+	}
+}
+
 /* Set MMC clock / power.
  * Note: This controller uses a simple divider scheme therefore it cannot
  * run a MMC card at full speed (20MHz). The max clock is 24MHz on SD, but as
@@ -914,16 +927,8 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 		}
 	}
 
-	if (host->power != TMIO_MMC_OFF_STOP) {
-		switch (ios->bus_width) {
-		case MMC_BUS_WIDTH_1:
-			sd_ctrl_write16(host, CTL_SD_MEM_CARD_OPT, 0x80e0);
-		break;
-		case MMC_BUS_WIDTH_4:
-			sd_ctrl_write16(host, CTL_SD_MEM_CARD_OPT, 0x00e0);
-		break;
-		}
-	}
+	if (host->power != TMIO_MMC_OFF_STOP)
+		tmio_mmc_set_bus_width(host, ios->bus_width);
 
 	/* Let things settle. delay taken from winCE driver */
 	udelay(140);