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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next prev 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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