From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Shevchenko Subject: [PATCH v1 4/5] spi: dw: always reprogram CTRL0 Date: Tue, 24 Feb 2015 13:32:13 +0200 Message-ID: <1424777534-14246-5-git-send-email-andriy.shevchenko@linux.intel.com> References: <1424777534-14246-1-git-send-email-andriy.shevchenko@linux.intel.com> Cc: Andy Shevchenko To: Mark Brown , linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Return-path: In-Reply-To: <1424777534-14246-1-git-send-email-andriy.shevchenko-VuQAYsv1563Yd54FQh9/CA@public.gmane.org> Sender: linux-spi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: Instead of an additional reading from the register let's update it even if the value is kept the same. Signed-off-by: Andy Shevchenko --- drivers/spi/spi-dw.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index 0e0c48b..281121f 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -476,8 +476,7 @@ static void pump_transfers(unsigned long data) if (dw_readw(dws, DW_SPI_CTRL0) != cr0 || cs_change || clk_div || imask) { spi_enable_chip(dws, 0); - if (dw_readw(dws, DW_SPI_CTRL0) != cr0) - dw_writew(dws, DW_SPI_CTRL0, cr0); + dw_writew(dws, DW_SPI_CTRL0, cr0); spi_set_clk(dws, chip->clk_div); spi_chip_sel(dws, spi, 1); -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html