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| author | Tomasz Figa <tomasz.figa@gmail.com> | 2013-08-25 19:37:34 +0200 |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2013-09-16 23:48:27 +0200 |
| commit | c836c90e276ec1b1b4193bb6f0b5e6b11cc69f83 (patch) | |
| tree | 7aba4732b5b76ba35c3bd8e96044154135e5f891 /arch/arm/mach-s3c64xx/dma.c | |
| parent | irqchip: vic: Parse interrupt and resume masks from device tree (diff) | |
| download | linux-c836c90e276ec1b1b4193bb6f0b5e6b11cc69f83.tar.xz linux-c836c90e276ec1b1b4193bb6f0b5e6b11cc69f83.zip | |
ARM: S3C64XX: Bypass legacy initialization when booting with DT
This patch allows bypassing most of legacy initialization when booting
an S3C64xx-based board using device tree, by adding conditional checks
for DT presence to initcalls which are no longer necessary when booting
with DT..
Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm/mach-s3c64xx/dma.c')
| -rw-r--r-- | arch/arm/mach-s3c64xx/dma.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c64xx/dma.c b/arch/arm/mach-s3c64xx/dma.c index c511dfaae148..7e22c2113816 100644 --- a/arch/arm/mach-s3c64xx/dma.c +++ b/arch/arm/mach-s3c64xx/dma.c @@ -12,6 +12,10 @@ * published by the Free Software Foundation. */ +/* + * NOTE: Code in this file is not used when booting with Device Tree support. + */ + #include <linux/kernel.h> #include <linux/module.h> #include <linux/interrupt.h> @@ -24,6 +28,7 @@ #include <linux/err.h> #include <linux/io.h> #include <linux/amba/pl080.h> +#include <linux/of.h> #include <mach/dma.h> #include <mach/map.h> @@ -726,6 +731,10 @@ static int __init s3c64xx_dma_init(void) { int ret; + /* This driver is not supported when booting with device tree. */ + if (of_have_populated_dt()) + return -ENODEV; + printk(KERN_INFO "%s: Registering DMA channels\n", __func__); dma_pool = dma_pool_create("DMA-LLI", NULL, sizeof(struct pl080s_lli), 16, 0); |