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authorSuren A. Chilingaryan <csa@suren.me>2017-06-14 03:50:39 +0200
committerSuren A. Chilingaryan <csa@suren.me>2017-06-14 03:50:39 +0200
commitde3112ba6a92fc56c8861f7deabb7db1c487e775 (patch)
treeef19dbc9a57cd1ce2ad82f13f77f8e2801b148fd /driver
parenta92e1d1a8d9a4dcaff3c6dc3d6b47d4b2e341155 (diff)
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Only set pgprot_noncached for consistent buffers
Diffstat (limited to 'driver')
-rw-r--r--driver/kmem.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/driver/kmem.c b/driver/kmem.c
index 522f3bc..c1282be 100644
--- a/driver/kmem.c
+++ b/driver/kmem.c
@@ -616,8 +616,10 @@ int pcidriver_mmap_kmem(pcidriver_privdata_t *privdata, struct vm_area_struct *v
vma->vm_flags |= (VM_RESERVED);
+ if ((kmem_entry->type&&PCILIB_KMEM_TYPE_MASK) == PCILIB_KMEM_TYPE_CONSISTENT) {
// This is coherent memory, so it must not be cached.
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ }
mod_info_dbg("Mapping address %08lx / PFN %08lx\n",
virt_to_phys((void*)kmem_entry->cpua),