diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig.debug | 10 | ||||
| -rw-r--r-- | lib/swiotlb.c | 2 |
2 files changed, 11 insertions, 1 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index c567f219191d..1faa5087dc86 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -389,6 +389,16 @@ config DEBUG_LIST If unsure, say N. +config DEBUG_SG + bool "Debug SG table operations" + depends on DEBUG_KERNEL + help + Enable this to turn on checks on scatter-gather tables. This can + help find problems with drivers that do not properly initialize + their sg tables. + + If unsure, say N. + config FRAME_POINTER bool "Compile the kernel with frame pointers" depends on DEBUG_KERNEL && (X86 || CRIS || M68K || M68KNOMMU || FRV || UML || S390 || AVR32 || SUPERH || BFIN) diff --git a/lib/swiotlb.c b/lib/swiotlb.c index 752fd95323f3..1a8050ade861 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -35,7 +35,7 @@ #define OFFSET(val,align) ((unsigned long) \ ( (val) & ( (align) - 1))) -#define SG_ENT_VIRT_ADDRESS(sg) (page_address((sg)->page) + (sg)->offset) +#define SG_ENT_VIRT_ADDRESS(sg) (sg_virt((sg))) #define SG_ENT_PHYS_ADDRESS(sg) virt_to_bus(SG_ENT_VIRT_ADDRESS(sg)) /* |