openwrt/target/linux/ar71xx/patches-3.8/003-spi-ath79-remove-superfluous-chip-select-code.patch

From 622d87da7f99b29dde053881bf42c46de7572ce5 Mon Sep 17 00:00:00 2001
From: Gabor Juhos <juhosg@openwrt.org>
Date: Thu, 27 Dec 2012 10:42:26 +0100
Subject: [PATCH] spi/ath79: remove superfluous chip select code

commit f1e8fc9898fd8ca78b7438d3c2e60028d3ae2a34 upstream.

The spi_bitbang driver calls the chipselect function
of the driver from spi_bitbang_setup in order to
deselect the given SPI chip, so we don't have to
initialize the CS line here.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
---
 drivers/spi/spi-ath79.c |    6 ------
 1 file changed, 6 deletions(-)

--- a/drivers/spi/spi-ath79.c
+++ b/drivers/spi/spi-ath79.c
@@ -128,12 +128,6 @@ static int ath79_spi_setup_cs(struct spi
 			gpio_free(cdata->gpio);
 			return status;
 		}
-	} else {
-		if (spi->mode & SPI_CS_HIGH)
-			sp->ioc_base |= AR71XX_SPI_IOC_CS0;
-		else
-			sp->ioc_base &= ~AR71XX_SPI_IOC_CS0;
-		ath79_spi_wr(sp, AR71XX_SPI_REG_IOC, sp->ioc_base);
 	}
 
 	return 0;