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openwrt-xburst/target/linux/ar71xx/patches-3.2/203-spi-ath79-remove-superfluous-chip-select-code.patch
juhosg e0b80e41eb ar71xx: add initial support for 3.2
Tested on the following boards:
  ALFA AP96
  TL-MR3220 v1
  TL-WR1043ND v1
  TL-WR2543ND v1
  TL-WR703N v1
  TL-WR741ND v1
  TL-WR741ND v4
  WNDR3700 v1
  WZR-HP-G300NH

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29868 3c298f89-4303-0410-b956-a3cf2f4a3e73
2012-01-22 22:38:19 +00:00

31 lines
918 B
Diff

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;