Akinobu Mita d074ae9505 spi: omap2-mcspi: poll OMAP2_MCSPI_CHSTAT_RXS for PIO transfer ... [ Upstream commit 812613591cb652344186c4cd912304ed02138566 ] When running the spi-loopback-test with slower clock rate like 10 KHz, the test for 251 bytes transfer was failed. This failure triggered an spi-omap2-mcspi's error message "DMA RX last word empty". This message means that PIO for reading the remaining bytes due to the DMA transfer length reduction is failed. This problem can be fixed by polling OMAP2_MCSPI_CHSTAT_RXS bit in channel status register to wait until the receive buffer register is filled. Cc: Mark Brown <broonie@kernel.org> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-03-22 09:23:22 +01:00
..
Kconfig	Revert "spi: SPI_FSL_DSPI should depend on HAS_DMA"	2017-12-16 10:33:50 +01:00
Makefile	spi: bcm2835aux: add bcm2835 auxiliary spi device driver	2015-10-07 11:42:57 +01:00
spi-adi-v3.c
spi-altera.c
spi-ath79.c	spi: ath79: simplify iomem resource mapping	2015-09-30 20:33:29 +01:00
spi-atmel.c	spi: atmel: fixed spin_lock usage inside atmel_spi_remove	2018-03-03 10:19:42 +01:00
spi-au1550.c
spi-bcm53xx.c
spi-bcm53xx.h
spi-bcm63xx-hsspi.c
spi-bcm63xx.c	spi: bcm63xx: use correct format string for printing a resource	2015-11-16 18:43:41 +00:00
spi-bcm2835.c	Merge remote-tracking branches 'spi/topic/ath97', 'spi/topic/atmel', 'spi/topic/au1550', 'spi/topic/bcm2835' and 'spi/topic/bcm2835aux' into spi-next	2015-11-04 11:02:04 +00:00
spi-bcm2835aux.c	spi: bcm2835aux: change initialization order and switch to platform_get_irq	2015-10-16 15:35:33 +01:00
spi-bfin-sport.c
spi-bfin5xx.c
spi-bitbang-txrx.h
spi-bitbang.c	spi: bitbang: switch to the generic implementation of transfer_one_message	2015-10-05 14:55:56 +01:00
spi-butterfly.c
spi-cadence.c
spi-clps711x.c
spi-coldfire-qspi.c	spi: spi-coldfire-qspi: enable RuntimePM before registering to the core	2015-10-12 17:02:08 +01:00
spi-davinci.c	spi: davinci: use dma_mapping_error()	2017-07-05 14:37:20 +02:00
spi-dln2.c
spi-dw-mid.c
spi-dw-mmio.c	spi: dw-mmio: convert to unified device property API	2015-10-19 20:32:01 +01:00
spi-dw-pci.c	spi: dw-pci: remove unused pdev member from struct dw_spi_pci	2015-10-19 20:32:01 +01:00
spi-dw.c	spi: dw: Make debugfs name unique between instances	2017-08-06 19:19:44 -07:00
spi-dw.h	spi: dw: introduce spi_shutdown_chip()	2015-10-19 20:32:01 +01:00
spi-efm32.c
spi-ep93xx.c
spi-falcon.c
spi-fsl-cpm.c
spi-fsl-cpm.h
spi-fsl-dspi.c	spi: spi-fsl-dspi: Drop extra spi_master_put in device remove function	2016-10-31 04:13:59 -06:00
spi-fsl-espi.c
spi-fsl-lib.c
spi-fsl-lib.h
spi-fsl-spi.c
spi-fsl-spi.h
spi-gpio.c
spi-img-spfi.c
spi-imx.c	spi: imx: do not access registers while clocks disabled	2018-02-03 17:04:31 +01:00
spi-lm70llp.c
spi-meson-spifc.c
spi-mpc52xx-psc.c
spi-mpc52xx.c
spi-mpc512x-psc.c
spi-mt65xx.c	spi: mediatek: single device does not require cs_gpios	2015-11-16 17:44:57 +00:00
spi-mxs.c
spi-nuc900.c
spi-oc-tiny.c
spi-octeon.c
spi-omap-100k.c
spi-omap-uwire.c
spi-omap2-mcspi.c	spi: omap2-mcspi: poll OMAP2_MCSPI_CHSTAT_RXS for PIO transfer	2018-03-22 09:23:22 +01:00
spi-orion.c	spi: mvebu: fix baudrate calculation for armada variant	2017-01-15 13:41:36 +01:00
spi-pl022.c	spi: pl022: handle EPROBE_DEFER for dma	2015-11-23 11:31:44 +00:00
spi-ppc4xx.c
spi-pxa2xx-dma.c	spi: pxa2xx: Remove empty function pxa2xx_spi_dma_resume()	2015-10-01 17:26:27 +01:00
spi-pxa2xx-pci.c
spi-pxa2xx.c	spi: pxa2xx: Clear all RFT bits in reset_sccr1() on Intel Quark	2016-08-20 18:09:19 +02:00
spi-pxa2xx.h	Merge remote-tracking branches 'spi/topic/omap-100k', 'spi/topic/omap-uwire', 'spi/topic/owner', 'spi/topic/pxa' and 'spi/topic/pxa2xx' into spi-next	2015-11-04 11:02:12 +00:00
spi-qup.c
spi-rb4xx.c
spi-rockchip.c	spi/rockchip: Make sure spi clk is on in rockchip_spi_set_cs	2016-05-04 14:48:50 -07:00
spi-rspi.c
spi-s3c24xx-fiq.h
spi-s3c24xx-fiq.S
spi-s3c24xx.c
spi-s3c64xx.c
spi-sc18is602.c
spi-sh-hspi.c
spi-sh-msiof.c	spi: sh-msiof: Fix DMA transfer size check	2017-12-09 18:42:39 +01:00
spi-sh-sci.c
spi-sh.c
spi-sirf.c
spi-st-ssc4.c
spi-sun4i.c	spi: sun4i: disable clocks in the remove function	2018-02-25 11:03:41 +01:00
spi-sun6i.c	spi: sunxi: fix transfer timeout	2016-08-10 11:49:28 +02:00
spi-tegra20-sflash.c
spi-tegra20-slink.c
spi-tegra114.c
spi-ti-qspi.c	spi: spi-ti-qspi: Handle truncated frames properly	2016-05-18 17:06:47 -07:00
spi-tle62x0.c	spi: Drop owner assignment from spi_drivers	2015-10-28 10:30:17 +09:00
spi-topcliff-pch.c
spi-txx9.c
spi-xcomm.c
spi-xilinx.c	spi: xilinx: Detect stall with Unknown commands	2018-01-02 20:33:21 +01:00
spi-xlp.c
spi-xtensa-xtfpga.c	spi: xtensa-xtfpga: fix register endianness	2015-09-22 09:30:10 -07:00
spi-zynqmp-gqspi.c
spi.c	Merge remote-tracking branch 'spi/fix/core' into spi-linus	2015-12-16 13:28:31 +00:00
spidev.c	spi: spidev: Hold spi_lock over all defererences of spi in release()	2015-12-16 12:09:35 +00:00