From: Dan Carpenter <dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
To: Laxman Dewangan <ldewangan-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
Cc: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>,
Thierry Reding
<thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
kernel-janitors-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [patch] spi: tegra: checking for ERR_PTR instead of NULL
Date: Mon, 16 Dec 2013 17:02:10 +0300 [thread overview]
Message-ID: <20131216140210.GA32033@elgon.mountain> (raw)
dma_request_slave_channel() returns NULL on error and not ERR_PTRs.
I've fixed this by using dma_request_slave_channel_reason() which does
return ERR_PTRs.
Fixes: a915d150f68d ('spi: tegra: convert to standard DMA DT bindings')
Signed-off-by: Dan Carpenter <dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
diff --git a/drivers/spi/spi-tegra20-slink.c b/drivers/spi/spi-tegra20-slink.c
index 1e61e9854064..be3a069879c3 100644
--- a/drivers/spi/spi-tegra20-slink.c
+++ b/drivers/spi/spi-tegra20-slink.c
@@ -612,8 +612,8 @@ static int tegra_slink_init_dma_param(struct tegra_slink_data *tspi,
int ret;
struct dma_slave_config dma_sconfig;
- dma_chan = dma_request_slave_channel(tspi->dev,
- dma_to_memory ? "rx" : "tx");
+ dma_chan = dma_request_slave_channel_reason(tspi->dev,
+ dma_to_memory ? "rx" : "tx");
if (IS_ERR(dma_chan)) {
ret = PTR_ERR(dma_chan);
if (ret != -EPROBE_DEFER)
--
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next reply other threads:[~2013-12-16 14:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-16 14:02 Dan Carpenter [this message]
2013-12-16 16:55 ` [patch] spi: tegra: checking for ERR_PTR instead of NULL Stephen Warren
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