diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-01-29 10:22:49 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-03-24 11:30:12 +0000 |
| commit | 21d1c7702e74337717a1133fe8665f6591768581 (patch) | |
| tree | 7f90b864e45f53909a21897c46985973e3174463 /arch/arm | |
| parent | 09a2ba2fa0eba3da747db860ac1c8c0956665316 (diff) | |
ARM: sa1111: only setup DMA for DMA capable devices
It's pointless registering the PS/2 interfaces with the dmabounce code
when there's no DMA support for these in hardware, so only setup the
DMA masks for two subdevices which support DMA - the OHCI and SAC.
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/common/sa1111.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c index 7b4351b28a5e..d78499f84bd1 100644 --- a/arch/arm/common/sa1111.c +++ b/arch/arm/common/sa1111.c @@ -121,6 +121,7 @@ static struct sa1111 *g_sa1111; struct sa1111_dev_info { unsigned long offset; unsigned long skpcr_mask; + bool dma; unsigned int devid; unsigned int irq[6]; }; @@ -129,6 +130,7 @@ static struct sa1111_dev_info sa1111_devices[] = { { .offset = SA1111_USB, .skpcr_mask = SKPCR_UCLKEN, + .dma = true, .devid = SA1111_DEVID_USB, .irq = { IRQ_USBPWR, @@ -142,6 +144,7 @@ static struct sa1111_dev_info sa1111_devices[] = { { .offset = 0x0600, .skpcr_mask = SKPCR_I2SCLKEN | SKPCR_L3CLKEN, + .dma = true, .devid = SA1111_DEVID_SAC, .irq = { AUDXMTDMADONEA, @@ -641,10 +644,10 @@ sa1111_init_one_child(struct sa1111 *sachip, struct resource *parent, dev->irq[i] = sachip->irq_base + info->irq[i]; /* - * If the parent device has a DMA mask associated with it, - * propagate it down to the children. + * If the parent device has a DMA mask associated with it, and + * this child supports DMA, propagate it down to the children. */ - if (sachip->dev->dma_mask) { + if (info->dma && sachip->dev->dma_mask) { dev->dma_mask = *sachip->dev->dma_mask; dev->dev.dma_mask = &dev->dma_mask; dev->dev.coherent_dma_mask = sachip->dev->coherent_dma_mask; |