From e4f907e968a754fd1180c364c90ba2a4a0398d7e Mon Sep 17 00:00:00 2001 From: Álvaro Fernández Rojas Date: Fri, 22 Mar 2019 18:22:31 +0100 Subject: dma: bcm6348: check if driver is enabled before send/recv MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch prevents errors when running tftpput. Signed-off-by: Álvaro Fernández Rojas --- drivers/dma/bcm6348-iudma.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers/dma') diff --git a/drivers/dma/bcm6348-iudma.c b/drivers/dma/bcm6348-iudma.c index 1d3c192cfe..e7bd1b2350 100644 --- a/drivers/dma/bcm6348-iudma.c +++ b/drivers/dma/bcm6348-iudma.c @@ -324,6 +324,9 @@ static int bcm6348_iudma_receive(struct dma *dma, void **dst, void *metadata) struct bcm6348_dma_desc *dma_desc = dma_desc = ch_priv->dma_ring; int ret; + if (!ch_priv->running) + return -EINVAL; + /* get dma ring descriptor address */ dma_desc += ch_priv->desc_id; @@ -369,6 +372,9 @@ static int bcm6348_iudma_send(struct dma *dma, void *src, size_t len, struct bcm6348_dma_desc *dma_desc; uint16_t status; + if (!ch_priv->running) + return -EINVAL; + /* flush cache */ bcm6348_iudma_fdc(src, len); -- cgit v1.2.3