aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/ar71xx/patches-3.3/203-spi-ath79-remove-superfluous-chip-select-code.patch
blob: a2391be646af7556753f89a3eee750760eecdfbb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
From 7385ff2cb72d6a0107890760466b9564aa5204c1 Mon Sep 17 00:00:00 2001
From: Gabor Juhos <juhosg@openwrt.org>
Date: Mon, 9 Jan 2012 15:03:28 +0100
Subject: [PATCH 3/7] spi/ath79: remove superfluous chip select code

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>
---
 drivers/spi/spi-ath79.c |    6 ------
 1 files changed, 0 insertions(+), 6 deletions(-)

--- a/drivers/spi/spi-ath79.c
+++ b/drivers/spi/spi-ath79.c
@@ -121,12 +121,6 @@ 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;