Unverified Commit 2b947137 authored Jun 26, 2019 by Keiji Hayashibara Committed by Mark Brown Jun 26, 2019

spi: uniphier: fix zero-length transfer



The zero-length transfer results in timeout error because
the transfer doesn't start.
This commit modified to return success in this case.

Signed-off-by: Keiji Hayashibara <hayashibara.keiji@socionext.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

parent e4671df0

drivers/spi/spi-uniphier.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -331,6 +331,10 @@ static int uniphier_spi_transfer_one(struct spi_master *master,
		struct device *dev = master->dev.parent;
		unsigned long time_left;

		/* Terminate and return success for 0 byte length transfer */
		if (!t->len)
		return 0;

		uniphier_spi_setup_transfer(spi, t);

		reinit_completion(&priv->xfer_done);