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Date: Mon, 21 Sep 2015 16:02:58 +0200 From: Tomeu Vizoso <tomeu.vizoso@...labora.com> To: linux-kernel@...r.kernel.org Cc: Rob Herring <robh+dt@...nel.org>, Stephen Warren <swarren@...dotorg.org>, Javier Martinez Canillas <javier@....samsung.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Mark Brown <broonie@...nel.org>, Thierry Reding <thierry.reding@...il.com>, Alan Stern <stern@...land.harvard.edu>, "Rafael J. Wysocki" <rjw@...ysocki.net>, linux-arm-kernel@...ts.infradead.org, Dmitry Torokhov <dmitry.torokhov@...il.com>, devicetree@...r.kernel.org, Linus Walleij <linus.walleij@...aro.org>, linux-acpi@...r.kernel.org, Arnd Bergmann <arnd@...db.de>, Tomeu Vizoso <tomeu.vizoso@...labora.com> Subject: [PATCH v6 18/22] dma: of: Probe DMA controllers on demand When looking up a DMA controller through its OF node, probe it if it hasn't already. The goal is to reduce deferred probes to a minimum, as it makes it very cumbersome to find out why a device failed to probe, and can introduce very big delays in when a critical device is probed. Signed-off-by: Tomeu Vizoso <tomeu.vizoso@...labora.com> --- drivers/dma/of-dma.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/dma/of-dma.c b/drivers/dma/of-dma.c index 1e1f2986eba8..e899832f7df3 100644 --- a/drivers/dma/of-dma.c +++ b/drivers/dma/of-dma.c @@ -16,6 +16,7 @@ #include <linux/mutex.h> #include <linux/slab.h> #include <linux/of.h> +#include <linux/of_device.h> #include <linux/of_dma.h> static LIST_HEAD(of_dma_list); @@ -263,6 +264,8 @@ struct dma_chan *of_dma_request_slave_channel(struct device_node *np, if (of_dma_match_channel(np, name, i, &dma_spec)) continue; + of_device_probe(dma_spec.np); + mutex_lock(&of_dma_lock); ofdma = of_dma_find_controller(&dma_spec); -- 2.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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