diff options
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/dma/acpi-dma.c | 11 | ||||
| -rw-r--r-- | drivers/dma/of-dma.c | 9 | ||||
| -rw-r--r-- | drivers/dma/sh/usb-dmac.c | 2 |
4 files changed, 18 insertions, 6 deletions
diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig index e6cd1a32025a..f450f3d8f63a 100644 --- a/drivers/dma/Kconfig +++ b/drivers/dma/Kconfig @@ -239,7 +239,7 @@ config INTEL_IDMA64 config INTEL_IOATDMA tristate "Intel I/OAT DMA support" - depends on PCI && X86_64 + depends on PCI && X86_64 && !UML select DMA_ENGINE select DMA_ENGINE_RAID select DCA diff --git a/drivers/dma/acpi-dma.c b/drivers/dma/acpi-dma.c index 16d0daa058a5..eef1b93828c2 100644 --- a/drivers/dma/acpi-dma.c +++ b/drivers/dma/acpi-dma.c @@ -15,6 +15,7 @@ #include <linux/device.h> #include <linux/err.h> #include <linux/module.h> +#include <linux/kernel.h> #include <linux/list.h> #include <linux/mutex.h> #include <linux/slab.h> @@ -71,8 +72,14 @@ static int acpi_dma_parse_resource_group(const struct acpi_csrt_group *grp, si = (const struct acpi_csrt_shared_info *)&grp[1]; - /* Match device by MMIO and IRQ */ - if (si->mmio_base_low != mem || si->gsi_interrupt != irq) + /* Match device by MMIO */ + if (si->mmio_base_low != lower_32_bits(mem) || + si->mmio_base_high != upper_32_bits(mem)) + return 0; + + /* Match device by Linux vIRQ */ + ret = acpi_register_gsi(NULL, si->gsi_interrupt, si->interrupt_mode, si->interrupt_polarity); + if (ret != irq) return 0; dev_dbg(&adev->dev, "matches with %.4s%04X (rev %u)\n", diff --git a/drivers/dma/of-dma.c b/drivers/dma/of-dma.c index 86c591481dfe..4a5dbf30605a 100644 --- a/drivers/dma/of-dma.c +++ b/drivers/dma/of-dma.c @@ -68,8 +68,12 @@ static struct dma_chan *of_dma_router_xlate(struct of_phandle_args *dma_spec, return NULL; ofdma_target = of_dma_find_controller(&dma_spec_target); - if (!ofdma_target) - return NULL; + if (!ofdma_target) { + ofdma->dma_router->route_free(ofdma->dma_router->dev, + route_data); + chan = ERR_PTR(-EPROBE_DEFER); + goto err; + } chan = ofdma_target->of_dma_xlate(&dma_spec_target, ofdma_target); if (IS_ERR_OR_NULL(chan)) { @@ -80,6 +84,7 @@ static struct dma_chan *of_dma_router_xlate(struct of_phandle_args *dma_spec, chan->route_data = route_data; } +err: /* * Need to put the node back since the ofdma->of_dma_route_allocate * has taken it for generating the new, translated dma_spec diff --git a/drivers/dma/sh/usb-dmac.c b/drivers/dma/sh/usb-dmac.c index cc8fc601ed47..416057d9f0b6 100644 --- a/drivers/dma/sh/usb-dmac.c +++ b/drivers/dma/sh/usb-dmac.c @@ -863,8 +863,8 @@ static int usb_dmac_probe(struct platform_device *pdev) error: of_dma_controller_free(pdev->dev.of_node); - pm_runtime_put(&pdev->dev); error_pm: + pm_runtime_put(&pdev->dev); pm_runtime_disable(&pdev->dev); return ret; } |