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authorDavid S. Miller <davem@davemloft.net>2009-09-24 18:13:11 -0400
committerDavid S. Miller <davem@davemloft.net>2009-09-24 18:13:11 -0400
commit8b3f6af86378d0a10ca2f1ded1da124aef13b62c (patch)
treede6ca90295730343c495be8d98be8efa322140ef /arch/arm/mm/highmem.c
parent139d6065c83071d5f66cd013a274a43699f8e2c1 (diff)
parent94e0fb086fc5663c38bbc0fe86d698be8314f82f (diff)
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts: drivers/staging/Kconfig drivers/staging/Makefile drivers/staging/cpc-usb/TODO drivers/staging/cpc-usb/cpc-usb_drv.c drivers/staging/cpc-usb/cpc.h drivers/staging/cpc-usb/cpc_int.h drivers/staging/cpc-usb/cpcusb.h
Diffstat (limited to 'arch/arm/mm/highmem.c')
-rw-r--r--arch/arm/mm/highmem.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/mm/highmem.c b/arch/arm/mm/highmem.c
index a34954d9df7d..73cae57fa707 100644
--- a/arch/arm/mm/highmem.c
+++ b/arch/arm/mm/highmem.c
@@ -40,11 +40,16 @@ void *kmap_atomic(struct page *page, enum km_type type)
40{ 40{
41 unsigned int idx; 41 unsigned int idx;
42 unsigned long vaddr; 42 unsigned long vaddr;
43 void *kmap;
43 44
44 pagefault_disable(); 45 pagefault_disable();
45 if (!PageHighMem(page)) 46 if (!PageHighMem(page))
46 return page_address(page); 47 return page_address(page);
47 48
49 kmap = kmap_high_get(page);
50 if (kmap)
51 return kmap;
52
48 idx = type + KM_TYPE_NR * smp_processor_id(); 53 idx = type + KM_TYPE_NR * smp_processor_id();
49 vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); 54 vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
50#ifdef CONFIG_DEBUG_HIGHMEM 55#ifdef CONFIG_DEBUG_HIGHMEM
@@ -80,6 +85,9 @@ void kunmap_atomic(void *kvaddr, enum km_type type)
80#else 85#else
81 (void) idx; /* to kill a warning */ 86 (void) idx; /* to kill a warning */
82#endif 87#endif
88 } else if (vaddr >= PKMAP_ADDR(0) && vaddr < PKMAP_ADDR(LAST_PKMAP)) {
89 /* this address was obtained through kmap_high_get() */
90 kunmap_high(pte_page(pkmap_page_table[PKMAP_NR(vaddr)]));
83 } 91 }
84 pagefault_enable(); 92 pagefault_enable();
85} 93}