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From: Jarkko Nikula <jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
To: linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	Nicolas Ferre
	<nicolas.ferre-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>,
	Daniel Mack <daniel-cYrQPVfZoowdnm+yROfE0A@public.gmane.org>,
	Haojian Zhuang
	<haojian.zhuang-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Robert Jarzmik <robert.jarzmik-GANU6spQydw@public.gmane.org>,
	Kukjin Kim <kgene-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	Krzysztof Kozlowski
	<k.kozlowski-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>,
	Jarkko Nikula
	<jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Subject: [PATCH 15/16] spi: pxa2xx: Remove if statement that is always true in pump_transfers()
Date: Tue, 15 Sep 2015 16:26:27 +0300	[thread overview]
Message-ID: <1442323588-29642-15-git-send-email-jarkko.nikula@linux.intel.com> (raw)
In-Reply-To: <1442323588-29642-1-git-send-email-jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>

This is continuation to previous commit by separating unindentation from
variable removal done in previous commit. As said SPI core have validated
both the speed_hz and bits_per_word and the if statement here evaluates
always to true.

Remove the test and unindent the code block accordingly. While at it remove
also needless "cr0 = chip->cr0" as cr0 will be overwritten anyway and fix
block comment style.

Signed-off-by: Jarkko Nikula <jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
---
 drivers/spi/spi-pxa2xx.c | 76 +++++++++++++++++++++++-------------------------
 1 file changed, 37 insertions(+), 39 deletions(-)

diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index 40862f589277..3948e6deb0f1 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -922,47 +922,45 @@ static void pump_transfers(unsigned long data)
 	drv_data->read = drv_data->rx ? chip->read : null_reader;
 
 	/* Change speed and bit per word on a per transfer */
-	cr0 = chip->cr0;
-	if (transfer->speed_hz || transfer->bits_per_word) {
-
-		bits = transfer->bits_per_word;
-		speed = transfer->speed_hz;
-
-		clk_div = pxa2xx_ssp_get_clk_div(drv_data, chip, speed);
-
-		if (bits <= 8) {
-			drv_data->n_bytes = 1;
-			drv_data->read = drv_data->read != null_reader ?
-						u8_reader : null_reader;
-			drv_data->write = drv_data->write != null_writer ?
-						u8_writer : null_writer;
-		} else if (bits <= 16) {
-			drv_data->n_bytes = 2;
-			drv_data->read = drv_data->read != null_reader ?
-						u16_reader : null_reader;
-			drv_data->write = drv_data->write != null_writer ?
-						u16_writer : null_writer;
-		} else if (bits <= 32) {
-			drv_data->n_bytes = 4;
-			drv_data->read = drv_data->read != null_reader ?
-						u32_reader : null_reader;
-			drv_data->write = drv_data->write != null_writer ?
-						u32_writer : null_writer;
-		}
-		/* if bits/word is changed in dma mode, then must check the
-		 * thresholds and burst also */
-		if (chip->enable_dma) {
-			if (pxa2xx_spi_set_dma_burst_and_threshold(chip,
-							message->spi,
-							bits, &dma_burst,
-							&dma_thresh))
-				dev_warn_ratelimited(&message->spi->dev,
-						     "pump_transfers: DMA burst size reduced to match bits_per_word\n");
-		}
-
-		cr0 = pxa2xx_configure_sscr0(drv_data, clk_div, bits);
+	bits = transfer->bits_per_word;
+	speed = transfer->speed_hz;
+
+	clk_div = pxa2xx_ssp_get_clk_div(drv_data, chip, speed);
+
+	if (bits <= 8) {
+		drv_data->n_bytes = 1;
+		drv_data->read = drv_data->read != null_reader ?
+					u8_reader : null_reader;
+		drv_data->write = drv_data->write != null_writer ?
+					u8_writer : null_writer;
+	} else if (bits <= 16) {
+		drv_data->n_bytes = 2;
+		drv_data->read = drv_data->read != null_reader ?
+					u16_reader : null_reader;
+		drv_data->write = drv_data->write != null_writer ?
+					u16_writer : null_writer;
+	} else if (bits <= 32) {
+		drv_data->n_bytes = 4;
+		drv_data->read = drv_data->read != null_reader ?
+					u32_reader : null_reader;
+		drv_data->write = drv_data->write != null_writer ?
+					u32_writer : null_writer;
+	}
+	/*
+	 * if bits/word is changed in dma mode, then must check the
+	 * thresholds and burst also
+	 */
+	if (chip->enable_dma) {
+		if (pxa2xx_spi_set_dma_burst_and_threshold(chip,
+						message->spi,
+						bits, &dma_burst,
+						&dma_thresh))
+			dev_warn_ratelimited(&message->spi->dev,
+					     "pump_transfers: DMA burst size reduced to match bits_per_word\n");
 	}
 
+	cr0 = pxa2xx_configure_sscr0(drv_data, clk_div, bits);
+
 	message->state = RUNNING_STATE;
 
 	drv_data->dma_mapped = 0;
-- 
2.5.1

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  parent reply	other threads:[~2015-09-15 13:26 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-15 13:26 [PATCH 01/16] spi: txx9: Use transfer speed unconditionally Jarkko Nikula
     [not found] ` <1442323588-29642-1-git-send-email-jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-09-15 13:26   ` [PATCH 02/16] spi: s3c64xx: " Jarkko Nikula
     [not found]     ` <1442323588-29642-2-git-send-email-jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-09-16 20:02       ` Applied "spi: s3c64xx: Use transfer speed unconditionally" to the spi tree Mark Brown
2015-09-15 13:26   ` [PATCH 03/16] spi: octeon: Use transfer speed unconditionally Jarkko Nikula
     [not found]     ` <1442323588-29642-3-git-send-email-jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-09-16 20:02       ` Applied "spi: octeon: Use transfer speed unconditionally" to the spi tree Mark Brown
2015-09-15 13:26   ` [PATCH 04/16] spi: bfin-sport: Calculate transfer speed unconditionally Jarkko Nikula
     [not found]     ` <1442323588-29642-4-git-send-email-jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-09-16 20:02       ` Applied "spi: bfin-sport: Calculate transfer speed unconditionally" to the spi tree Mark Brown
2015-09-15 13:26   ` [PATCH 05/16] spi: spi-bfin5xx: Calculate transfer speed unconditionally Jarkko Nikula
     [not found]     ` <1442323588-29642-5-git-send-email-jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-09-16 20:02       ` Applied "spi: spi-bfin5xx: Calculate transfer speed unconditionally" to the spi tree Mark Brown
2015-09-15 13:26   ` [PATCH 06/16] spi: au1550: Simplify au1550_spi_setupxfer() Jarkko Nikula
     [not found]     ` <1442323588-29642-6-git-send-email-jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-09-16 20:02       ` Applied "spi: au1550: Simplify au1550_spi_setupxfer()" to the spi tree Mark Brown
2015-09-15 13:26   ` [PATCH 07/16] spi: mpc512x: Call mpc512x_psc_spi_transfer_setup() unconditionally Jarkko Nikula
     [not found]     ` <1442323588-29642-7-git-send-email-jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-09-17 17:37       ` Applied "spi: mpc512x: Call mpc512x_psc_spi_transfer_setup() unconditionally" to the spi tree Mark Brown
2015-09-15 13:26   ` [PATCH 08/16] spi: omap-uwire: Remove needless bits_per_word and speed_hz tests Jarkko Nikula
     [not found]     ` <1442323588-29642-8-git-send-email-jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-09-17 17:37       ` Applied "spi: omap-uwire: Remove needless bits_per_word and speed_hz tests" to the spi tree Mark Brown
2015-09-15 13:26   ` [PATCH 09/16] spi: omap-100k: Rely on validations done by spi core Jarkko Nikula
     [not found]     ` <1442323588-29642-9-git-send-email-jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-09-17 17:37       ` Applied "spi: omap-100k: Rely on validations done by spi core" to the spi tree Mark Brown
2015-09-15 13:26   ` [PATCH 10/16] spi: atmel: Remove needless bits_per_word and speed_hz tests Jarkko Nikula
     [not found]     ` <1442323588-29642-10-git-send-email-jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-09-15 13:54       ` Nicolas Ferre
2015-09-25 18:09       ` Applied "spi: atmel: Remove needless bits_per_word and speed_hz tests" to the spi tree Mark Brown
2015-09-15 13:26   ` [PATCH 11/16] spi: dw: Remove needless if statements Jarkko Nikula
     [not found]     ` <1442323588-29642-11-git-send-email-jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-09-17 17:37       ` Applied "spi: dw: Remove needless if statements" to the spi tree Mark Brown
2015-09-15 13:26   ` [PATCH 12/16] spi: dw: Remove test for non-zero spi->max_speed_hz Jarkko Nikula
     [not found]     ` <1442323588-29642-12-git-send-email-jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-09-17 17:37       ` Applied "spi: dw: Remove test for non-zero spi->max_speed_hz" to the spi tree Mark Brown
2015-09-15 13:26   ` [PATCH 13/16] spi: spi-fsl-dspi: Remove duplicated register write Jarkko Nikula
     [not found]     ` <1442323588-29642-13-git-send-email-jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-09-17 17:37       ` Applied "spi: spi-fsl-dspi: Remove duplicated register write" to the spi tree Mark Brown
2015-09-15 13:26   ` [PATCH 14/16] spi: pxa2xx: Remove two variables from struct chip_data Jarkko Nikula
     [not found]     ` <1442323588-29642-14-git-send-email-jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-09-17 17:37       ` Applied "spi: pxa2xx: Remove two variables from struct chip_data" to the spi tree Mark Brown
2015-09-15 13:26   ` Jarkko Nikula [this message]
     [not found]     ` <1442323588-29642-15-git-send-email-jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-09-17 17:37       ` Applied "spi: pxa2xx: Remove if statement that is always true in pump_transfers()" " Mark Brown
2015-09-15 13:26   ` [PATCH 16/16] spi: pxa2xx: Remove cr0 variable from struct chip_data Jarkko Nikula
     [not found]     ` <1442323588-29642-16-git-send-email-jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-09-17 17:37       ` Applied "spi: pxa2xx: Remove cr0 variable from struct chip_data" to the spi tree Mark Brown
2015-09-16 19:52   ` [PATCH 01/16] spi: txx9: Use transfer speed unconditionally Mark Brown
2015-09-16 20:02   ` Applied "spi: txx9: Use transfer speed unconditionally" to the spi tree Mark Brown

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