Re: [PATCH V2 4/4] ARM: at91/dma: DMA controller registering with DT support
From: Sergei Shtylyov <hidden>
Date: 2011-10-11 11:17:10
Also in:
linux-arm-kernel, lkml
Hello. On 10-10-2011 20:43, Nicolas Ferre wrote:
Device tree support on at91sam9g45 family SoC. Only call platform_device_register() if no compatible dma-controller node is found in device tree.
Signed-off-by: Nicolas Ferre<redacted> --- V2: use compatible string to match device.
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diff --git a/arch/arm/mach-at91/at91sam9g45_devices.c b/arch/arm/mach-at91/at91sam9g45_devices.c index 9390ae6..2120055 100644 --- a/arch/arm/mach-at91/at91sam9g45_devices.c +++ b/arch/arm/mach-at91/at91sam9g45_devices.c@@ -64,7 +64,13 @@ static struct platform_device at_hdmac_device = { void __init at91_add_device_hdmac(void) { - platform_device_register(&at_hdmac_device); + struct device_node *np = of_find_node_by_name(NULL, "dma-controller"); + + if (np&& of_device_is_compatible(np, "atmel,at91sam9g45-dma")) { + of_node_put(np); + } else { + platform_device_register(&at_hdmac_device); + }
{} not needed here, and checkpatch.pl should have protested.
WBR, Sergei