From: Chris Packham Date: Thu, 7 Nov 2019 04:42:35 +0000 (+1300) Subject: spi: spi-mem: fallback to using transfers when CS gpios are used X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=05766050d5bd9af24dcaec6b29255a6f2b324543;p=openwrt%2Fstaging%2Fblogic.git spi: spi-mem: fallback to using transfers when CS gpios are used Devices with chip selects driven via GPIO are not compatible with the spi-mem operations. Fallback to using standard spi transfers when the device is connected with a gpio CS. Signed-off-by: Chris Packham Link: https://lore.kernel.org/r/20191107044235.4864-3-chris.packham@alliedtelesis.co.nz Signed-off-by: Mark Brown --- diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c index 9f0fa9f3116d..e5a46f0eb93b 100644 --- a/drivers/spi/spi-mem.c +++ b/drivers/spi/spi-mem.c @@ -286,7 +286,7 @@ int spi_mem_exec_op(struct spi_mem *mem, const struct spi_mem_op *op) if (!spi_mem_internal_supports_op(mem, op)) return -ENOTSUPP; - if (ctlr->mem_ops) { + if (ctlr->mem_ops && !mem->spi->cs_gpiod) { ret = spi_mem_access_start(mem); if (ret) return ret;