mmc: sdhci: convert generic bus width setup to library function

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Markus Pargmann <mpa@pengutronix.de>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index 0b24997..86b8326 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -269,7 +269,7 @@
 		host->quirks &= ~SDHCI_QUIRK_NO_BUSY_IRQ;
 }
 
-static int esdhc_pltfm_bus_width(struct sdhci_host *host, int width)
+static void esdhc_pltfm_set_bus_width(struct sdhci_host *host, int width)
 {
 	u32 ctrl;
 
@@ -289,8 +289,6 @@
 
 	clrsetbits_be32(host->ioaddr + SDHCI_HOST_CONTROL,
 			ESDHC_CTRL_BUSWIDTH_MASK, ctrl);
-
-	return 0;
 }
 
 static const struct sdhci_ops sdhci_esdhc_ops = {
@@ -310,7 +308,7 @@
 	.platform_resume = esdhc_of_resume,
 #endif
 	.adma_workaround = esdhci_of_adma_workaround,
-	.platform_bus_width = esdhc_pltfm_bus_width,
+	.set_bus_width = esdhc_pltfm_set_bus_width,
 };
 
 static const struct sdhci_pltfm_data sdhci_esdhc_pdata = {