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89434c3c35
linux/drivers/spi
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Geert Uytterhoeven 89434c3c35
spi: sh-msiof: Fix timeout failures for TX-only DMA transfers 
When using RX (with or without TX), the DMA interrupt triggers
completion when the RX FIFO has been emptied, i.e. after the full
transfer has finished.

However, when using TX without RX, the DMA interrupt triggers completion
as soon as the DMA engine has filled the TX FIFO, i.e. before the full
transfer has finished.  Then sh_msiof_modify_ctr_wait() will spin until
the transfer has really finished and the TFSE bit is cleared, for at
most 1 ms.  For slow speeds and/or large transfers, this may cause
timeouts and transfer failures:

    spi_sh_msiof e6e10000.spi: failed to shut down hardware
    74x164 spi2.0: SPI transfer failed: -110
    spi_master spi2: failed to transfer one message from queue
    74x164 spi2.0: Failed writing: -110

Fix this by waiting explicitly until the TX FIFO has been emptied.

Based on a patch in the BSP by Hiromitsu Yamasaki.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-03 17:42:42 +00:00
..
Kconfig Merge remote-tracking branches 'spi/topic/sh-msiof', 'spi/topic/slave', 'spi/topic/spreadtrum' and 'spi/topic/tegra114' into spi-next 2017-11-10 21:33:51 +00:00
Makefile Merge remote-tracking branches 'spi/topic/sh-msiof', 'spi/topic/slave', 'spi/topic/spreadtrum' and 'spi/topic/tegra114' into spi-next 2017-11-10 21:33:51 +00:00
spi-adi-v3.c
spi-altera.c spi: altera: Consolidate TX/RX data register access 2017-08-16 11:53:31 +01:00
spi-armada-3700.c spi: a3700: Change SPI mode before asserting chip-select 2017-10-10 10:17:06 +01:00
spi-ath79.c spi/ath79: Fix checkpatch warnings 2017-07-17 12:09:38 +01:00
spi-atmel.c Merge remote-tracking branches 'spi/topic/atmel', 'spi/topic/bcm63xx', 'spi/topic/davinci' and 'spi/topic/imx' into spi-next 2017-07-03 16:21:06 +01:00
spi-au1550.c
spi-axi-spi-engine.c spi: spi-axi: fix potential use-after-free after deregistration 2017-10-31 11:15:10 +00:00
spi-bcm53xx.c
spi-bcm53xx.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
spi-bcm63xx-hsspi.c Merge remote-tracking branches 'spi/topic/altera', 'spi/topic/at79', 'spi/topic/bcm-qspi', 'spi/topic/bcm63xx' and 'spi/topic/bcm63xx-hspi' into spi-next 2017-09-04 15:51:14 +01:00
spi-bcm63xx.c spi/bcm63xx: fix error return code in bcm63xx_spi_probe() 2017-08-08 11:36:35 +01:00
spi-bcm2835.c
spi-bcm2835aux.c
spi-bcm-qspi.c spi: bcm-qspi: Fix use after free in bcm_qspi_probe() in error path 2017-10-12 09:26:23 +01:00
spi-bcm-qspi.h
spi-bfin5xx.c
spi-bfin-sport.c
spi-bitbang-txrx.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
spi-bitbang.c
spi-brcmstb-qspi.c
spi-butterfly.c
spi-cadence.c spi: cadence: Add support for context loss 2017-08-08 10:43:41 +01:00
spi-cavium-octeon.c
spi-cavium-thunderx.c
spi-cavium.c
spi-cavium.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
spi-clps711x.c
spi-coldfire-qspi.c
spi-davinci.c spi: davinci: Handle return value of clk_prepare_enable 2017-06-06 19:36:45 +01:00
spi-dln2.c
spi-dw-mid.c
spi-dw-mmio.c
spi-dw-pci.c
spi-dw.c
spi-dw.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
spi-efm32.c
spi-ep93xx.c spi: spi-ep93xx: use the default master transfer queueing mechanism 2017-08-09 17:53:14 +01:00
spi-falcon.c spi: spi-falcon: drop check of boot select 2017-09-01 11:33:22 +01:00
spi-fsl-cpm.c
spi-fsl-cpm.h
spi-fsl-dspi.c spi: spi-fsl-dspi: enabling Coldfire mcf5441x dspi 2017-11-03 12:53:16 +01:00
spi-fsl-espi.c
spi-fsl-lib.c
spi-fsl-lib.h
spi-fsl-lpspi.c
spi-fsl-spi.c Merge remote-tracking branches 'spi/topic/devprop', 'spi/topic/fsl', 'spi/topic/fsl-dspi', 'spi/topic/imx' and 'spi/topic/lantiq' into spi-next 2017-04-26 15:58:04 +01:00
spi-fsl-spi.h
spi-gpio.c
spi-img-spfi.c
spi-imx.c spi: imx: Don't require platform data chipselect array 2017-11-10 21:28:11 +00:00
spi-iproc-qspi.c
spi-jcore.c
spi-lantiq-ssc.c Merge remote-tracking branches 'spi/topic/devprop', 'spi/topic/fsl', 'spi/topic/fsl-dspi', 'spi/topic/imx' and 'spi/topic/lantiq' into spi-next 2017-04-26 15:58:04 +01:00
spi-lm70llp.c
spi-loopback-test.c spi: loopback-test: implement testing with no CS 2017-07-26 13:08:56 +01:00
spi-lp8841-rtc.c
spi-meson-spicc.c spi: Add Meson SPICC driver 2017-05-24 18:19:25 +01:00
spi-meson-spifc.c
spi-mpc52xx-psc.c
spi-mpc52xx.c
spi-mpc512x-psc.c
spi-mt65xx.c spi: mediatek: add spi support for mt2712 IC 2017-06-20 13:39:14 +01:00
spi-mxs.c spi: mxs: implement runtime pm 2017-09-27 10:02:57 -07:00
spi-nuc900.c
spi-oc-tiny.c
spi-omap2-mcspi.c spi: omap: Allocate bus number from spi framework 2017-08-18 12:15:41 +01:00
spi-omap-100k.c
spi-omap-uwire.c
spi-orion.c spi: orion: remove redundant assignment of status to zero 2017-11-02 13:03:53 +00:00
spi-pic32-sqi.c
spi-pic32.c spi: pic32: fix spelling mistakes on macro names 2017-07-26 13:04:21 +01:00
spi-pl022.c spi: pl022: constify amba_id 2017-08-23 17:12:05 +01:00
spi-ppc4xx.c
spi-pxa2xx-dma.c
spi-pxa2xx-pci.c
spi-pxa2xx.c spi: pxa2xx: Convert to GPIO descriptor API where possible 2017-08-04 12:41:55 +01:00
spi-pxa2xx.h spi: pxa2xx: Convert to GPIO descriptor API where possible 2017-08-04 12:41:55 +01:00
spi-qup.c spi: qup: fix 64-bit build warning 2017-08-10 15:50:23 +01:00
spi-rb4xx.c
spi-rockchip.c spi: rockchip: configure CTRLR1 according to size and data frame 2017-08-16 11:58:23 +01:00
spi-rspi.c spi: rspi: Use of_device_get_match_data() helper 2017-10-04 15:47:38 +01:00
spi-s3c24xx-fiq.h
spi-s3c24xx-fiq.S
spi-s3c24xx.c
spi-s3c64xx.c spi: s3c64xx: remove redundant pointer sci 2017-11-03 17:21:10 +00:00
spi-sc18is602.c
spi-sh-hspi.c
spi-sh-msiof.c spi: sh-msiof: Fix timeout failures for TX-only DMA transfers 2018-01-03 17:42:42 +00:00
spi-sh-sci.c
spi-sh.c spi: spi-sh: fix error return code in spi_sh_probe() 2017-08-09 17:18:06 +01:00
spi-sirf.c spi: sirf: fix spelling mistake: "registerred" -> "registered" 2017-06-28 20:02:52 +01:00
spi-slave-system-control.c spi: slave: Add SPI slave handler controlling system state 2017-05-26 13:12:19 +01:00
spi-slave-time.c spi: slave: Add SPI slave handler reporting uptime at previous message 2017-05-26 13:12:04 +01:00
spi-sprd-adi.c spi: sprd: Fix the possible negative value of BIT() 2017-10-25 14:00:03 +02:00
spi-st-ssc4.c spi: st-ssc4: whitespace cleanup 2017-05-26 12:41:07 +01:00
spi-stm32.c spi: stm32: Fix logical error in stm32_spi_prepare_mbr() 2017-09-13 09:42:27 -07:00
spi-sun4i.c
spi-sun6i.c spi: sun6i: explicitly request exclusive reset control 2017-07-19 17:06:03 +01:00
spi-tegra20-sflash.c spi: tegra20-sflash: explicitly request exclusive reset control 2017-07-19 17:06:31 +01:00
spi-tegra20-slink.c spi: tegra20-slink: explicitly request exclusive reset control 2017-07-19 17:06:26 +01:00
spi-tegra114.c spi: tegra114: correct register name in definition 2017-10-09 10:16:38 +01:00
spi-test.h
spi-ti-qspi.c Merge remote-tracking branches 'spi/topic/ti-qspi' and 'spi/topic/xlp' into spi-next 2017-04-26 15:58:22 +01:00
spi-tle62x0.c
spi-topcliff-pch.c
spi-txx9.c
spi-xcomm.c
spi-xilinx.c
spi-xlp.c spi: xlp: fix error return code in xlp_spi_probe() 2017-08-08 11:36:07 +01:00
spi-xtensa-xtfpga.c
spi-zynqmp-gqspi.c
spi.c Merge remote-tracking branch 'spi/topic/core' into spi-next 2017-11-10 21:33:43 +00:00
spidev.c Merge branch 'for-spi' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2017-07-08 10:41:53 -07:00