From 24a0013a04e81e95198daab98edf4df02e191568 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 10 Jul 2013 15:05:40 +0100 Subject: [PATCH] spi: More sanity checks for transfers Check that transfers are non-empty and that there is a completion for them. Signed-off-by: Mark Brown --- drivers/spi/spi.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index a52f16685d6a..c2899161ccac 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -1351,6 +1351,11 @@ static int __spi_async(struct spi_device *spi, struct spi_message *message) struct spi_master *master = spi->master; struct spi_transfer *xfer; + if (list_empty(&message->transfers)) + return -EINVAL; + if (!message->complete) + return -EINVAL; + /* Half-duplex links include original MicroWire, and ones with * only one data pin like SPI_3WIRE (switches direction) or where * either MOSI or MISO is missing. They can also be caused by -- 2.20.1