UML: Fix some apparent bitrot

- migration of net_device methods into net_device_ops
- dma_sync_single() changes
- cpumask_clear() -> cpumask_clear_cpu()

Signed-off-by: Paul Menage <men...@google.com>

--

Fixes the following compile errors:

include/linux/dma-mapping.h:113: error: redefinition of 'dma_sync_single'
arch/um/include/asm/dma-mapping.h:84: error: previous definition of 
'dma_sync_single' was here
include/linux/dma-mapping.h: In function 'dma_sync_single':
include/linux/dma-mapping.h:117: error: implicit declaration of function 
'dma_sync_single_for_cpu'
include/linux/dma-mapping.h: At top level:
include/linux/dma-mapping.h:120: error: redefinition of 'dma_sync_sg'
arch/um/include/asm/dma-mapping.h:91: error: previous definition of 
'dma_sync_sg' was here
include/linux/dma-mapping.h: In function 'dma_sync_sg':
include/linux/dma-mapping.h:124: error: implicit declaration of function 
'dma_sync_sg_for_cpu'


arch/um/drivers/slirp_kern.c: In function 'slirp_init':
arch/um/drivers/slirp_kern.c:35: error: 'struct net_device' has no member named 
'init'


arch/um/include/asm/mmu_context.h: In function 'switch_mm':
arch/um/include/asm/mmu_context.h:38: warning: passing argument 1 of 
'cpumask_clear' makes pointer from integer without
a cast
arch/um/include/asm/mmu_context.h:38: error: too many arguments to function 
'cpumask_clear'

---

 arch/um/drivers/slip_kern.c       |    1 -
 arch/um/drivers/slirp_kern.c      |    1 -
 arch/um/include/asm/dma-mapping.h |    4 ++--
 arch/um/include/asm/mmu_context.h |    2 +-
 4 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/arch/um/drivers/slip_kern.c b/arch/um/drivers/slip_kern.c
index 5ec1756..dd2aadc 100644
--- a/arch/um/drivers/slip_kern.c
+++ b/arch/um/drivers/slip_kern.c
@@ -30,7 +30,6 @@ static void slip_init(struct net_device *dev, void *data)
 
        slip_proto_init(&spri->slip);
 
-       dev->init = NULL;
        dev->hard_header_len = 0;
        dev->header_ops = NULL;
        dev->addr_len = 0;
diff --git a/arch/um/drivers/slirp_kern.c b/arch/um/drivers/slirp_kern.c
index f15a6e7..e376284 100644
--- a/arch/um/drivers/slirp_kern.c
+++ b/arch/um/drivers/slirp_kern.c
@@ -32,7 +32,6 @@ void slirp_init(struct net_device *dev, void *data)
 
        slip_proto_init(&spri->slip);
 
-       dev->init = NULL;
        dev->hard_header_len = 0;
        dev->header_ops = NULL;
        dev->addr_len = 0;
diff --git a/arch/um/include/asm/dma-mapping.h 
b/arch/um/include/asm/dma-mapping.h
index 90fc708..378de4b 100644
--- a/arch/um/include/asm/dma-mapping.h
+++ b/arch/um/include/asm/dma-mapping.h
@@ -79,14 +79,14 @@ dma_unmap_sg(struct device *dev, struct scatterlist *sg, 
int nhwentries,
 }
 
 static inline void
-dma_sync_single(struct device *dev, dma_addr_t dma_handle, size_t size,
+dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
                enum dma_data_direction direction)
 {
        BUG();
 }
 
 static inline void
-dma_sync_sg(struct device *dev, struct scatterlist *sg, int nelems,
+dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
            enum dma_data_direction direction)
 {
        BUG();
diff --git a/arch/um/include/asm/mmu_context.h 
b/arch/um/include/asm/mmu_context.h
index edd719e..34d8130 100644
--- a/arch/um/include/asm/mmu_context.h
+++ b/arch/um/include/asm/mmu_context.h
@@ -35,7 +35,7 @@ static inline void switch_mm(struct mm_struct *prev, struct 
mm_struct *next,
        unsigned cpu = smp_processor_id();
 
        if(prev != next){
-               cpumask_clear(cpu, mm_cpumask(prev));
+               cpumask_clear_cpu(cpu, mm_cpumask(prev));
                cpumask_set_cpu(cpu, mm_cpumask(next));
                if(next != &init_mm)
                        __switch_mm(&next->context.id);


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