Unverified Commit 05766050 authored Nov 07, 2019 by Chris Packham Committed by Mark Brown Nov 07, 2019

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 <chris.packham@alliedtelesis.co.nz>
Link: https://lore.kernel.org/r/20191107044235.4864-3-chris.packham@alliedtelesis.co.nz

Signed-off-by: Mark Brown <broonie@kernel.org>

parent 27fb2313

drivers/spi/spi-mem.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;