target/linux/ar71xx/patches-3.3/203-spi-ath79-remove-superfluous-chip-select-code.patch

   1 From ecf57a64feb737dec1da72aab21dccd30a88ba19 Mon Sep 17 00:00:00 2001
   2 From: Gabor Juhos <juhosg@openwrt.org>
   3 Date: Mon, 9 Jan 2012 15:03:28 +0100
   4 Subject: [PATCH 3/7] spi/ath79: remove superfluous chip select code
   5
   6 The spi_bitbang driver calls the chipselect function
   7 of the driver from spi_bitbang_setup in order to
   8 deselect the given SPI chip, so we don't have to
   9 initialize the CS line here.
  10
  11 Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
  12 ---
  13  drivers/spi/spi-ath79.c |    6 ------
  14  1 files changed, 0 insertions(+), 6 deletions(-)
  15
  16 --- a/drivers/spi/spi-ath79.c
  17 +++ b/drivers/spi/spi-ath79.c
  18 @@ -128,12 +128,6 @@ static int ath79_spi_setup_cs(struct spi
  19                         gpio_free(cdata->gpio);
  20                         return status;
  21                 }
  22 -       } else {
  23 -               if (spi->mode & SPI_CS_HIGH)
  24 -                       sp->ioc_base |= AR71XX_SPI_IOC_CS0;
  25 -               else
  26 -                       sp->ioc_base &= ~AR71XX_SPI_IOC_CS0;
  27 -               ath79_spi_wr(sp, AR71XX_SPI_REG_IOC, sp->ioc_base);
  28         }
  29
  30         return 0;