[PATCH 3/4] powerpc: call dma_debug_add_bus for PCI and VIO buses
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STALE5236d
From: Anton Blanchard <hidden>
Date: 2012-06-25 04:25:28
Subsystem:
the rest · Maintainer:
Linus Torvalds
The DMA API debug code has hooks to verify all DMA entries have been freed at time of hot unplug. We need to call dma_debug_add_bus for this to work. Signed-off-by: Anton Blanchard <redacted> --- Index: linux-build/arch/powerpc/kernel/vio.c ===================================================================
--- linux-build.orig/arch/powerpc/kernel/vio.c 2012-06-08 09:16:53.856359566 +1000
+++ linux-build/arch/powerpc/kernel/vio.c 2012-06-08 09:17:43.625089518 +1000@@ -37,8 +37,6 @@ #include <asm/page.h> #include <asm/hvcall.h> -static struct bus_type vio_bus_type; - static struct vio_dev vio_bus_device = { /* fake "parent" device */ .name = "vio", .type = "",
@@ -1580,7 +1578,7 @@ static int vio_hotplug(struct device *de return 0; } -static struct bus_type vio_bus_type = { +struct bus_type vio_bus_type = { .name = "vio", .dev_attrs = vio_dev_attrs, .uevent = vio_hotplug,
Index: linux-build/arch/powerpc/kernel/dma.c ===================================================================
--- linux-build.orig/arch/powerpc/kernel/dma.c 2012-06-08 09:12:47.356758198 +1000
+++ linux-build/arch/powerpc/kernel/dma.c 2012-06-08 09:17:43.625089518 +1000@@ -11,6 +11,8 @@ #include <linux/gfp.h> #include <linux/memblock.h> #include <linux/export.h> +#include <linux/pci.h> +#include <asm/vio.h> #include <asm/bug.h> #include <asm/abs_addr.h> #include <asm/machdep.h>
@@ -205,7 +207,13 @@ EXPORT_SYMBOL_GPL(dma_get_required_mask) static int __init dma_init(void) { - dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES); + dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES); +#ifdef CONFIG_PCI + dma_debug_add_bus(&pci_bus_type); +#endif +#ifdef CONFIG_IBMVIO + dma_debug_add_bus(&vio_bus_type); +#endif return 0; }
Index: linux-build/arch/powerpc/include/asm/vio.h ===================================================================
--- linux-build.orig/arch/powerpc/include/asm/vio.h 2012-06-08 09:12:47.344758025 +1000
+++ linux-build/arch/powerpc/include/asm/vio.h 2012-06-08 09:17:43.625089518 +1000@@ -44,6 +44,8 @@ */ #define VIO_CMO_MIN_ENT 1562624 +extern struct bus_type vio_bus_type; + struct iommu_table; /*