openwrt-xburst/target/linux/xburst/patches-2.6.31/400-spi-gpio-3wire.patch

From 1f49cf395395acc36efd3b408b6d22b7d9aef831 Mon Sep 17 00:00:00 2001
From: xiangfu <xiangfu@openmobilefree.net>
Date: Fri, 4 Sep 2009 11:43:18 -0400
Subject: [PATCH] 400-spi-gpio-3wire.patch

---
 drivers/spi/spi_gpio.c |   14 +++++++++-----
 1 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/drivers/spi/spi_gpio.c b/drivers/spi/spi_gpio.c
index 26bd03e..5f89c21 100644
--- a/drivers/spi/spi_gpio.c
+++ b/drivers/spi/spi_gpio.c
@@ -243,9 +243,11 @@ spi_gpio_request(struct spi_gpio_platform_data *pdata, const char *label)
 	if (value)
 		goto done;
 
-	value = spi_gpio_alloc(SPI_MISO_GPIO, label, true);
-	if (value)
-		goto free_mosi;
+	if (SPI_MISO_GPIO != SPI_MOSI_GPIO) {
+		value = spi_gpio_alloc(SPI_MISO_GPIO, label, true);
+		if (value)
+			goto free_mosi;
+	}
 
 	value = spi_gpio_alloc(SPI_SCK_GPIO, label, false);
 	if (value)
@@ -308,7 +310,8 @@ static int __init spi_gpio_probe(struct platform_device *pdev)
 	if (status < 0) {
 		spi_master_put(spi_gpio->bitbang.master);
 gpio_free:
-		gpio_free(SPI_MISO_GPIO);
+		if (SPI_MISO_GPIO != SPI_MOSI_GPIO)
+			gpio_free(SPI_MISO_GPIO);
 		gpio_free(SPI_MOSI_GPIO);
 		gpio_free(SPI_SCK_GPIO);
 		spi_master_put(master);
@@ -332,7 +335,8 @@ static int __exit spi_gpio_remove(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, NULL);
 
-	gpio_free(SPI_MISO_GPIO);
+	if (SPI_MISO_GPIO != SPI_MOSI_GPIO)
+		gpio_free(SPI_MISO_GPIO);
 	gpio_free(SPI_MOSI_GPIO);
 	gpio_free(SPI_SCK_GPIO);
 
-- 
1.5.6.3