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| author | Joerg Roedel <joerg.roedel@amd.com> | 2009-06-09 10:50:57 +0200 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-06-09 10:50:57 +0200 |
| commit | d2dd01de9924ae24afeba5aa5bc2e08287701df6 (patch) | |
| tree | 3021bf496579a48984666355b59df5e44b42dd32 /arch/arm/lib/bitops.h | |
| parent | 367d04c4ec02dad34d80452e32e3370db7fb6fee (diff) | |
| parent | 62a6f465f6572e1f28765c583c12753bb3e23715 (diff) | |
Merge commit 'tip/core/iommu' into amd-iommu/fixes
Diffstat (limited to 'arch/arm/lib/bitops.h')
| -rw-r--r-- | arch/arm/lib/bitops.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/lib/bitops.h b/arch/arm/lib/bitops.h index 2e787d40d59..c7f2627385e 100644 --- a/arch/arm/lib/bitops.h +++ b/arch/arm/lib/bitops.h @@ -18,12 +18,14 @@ mov r2, #1 add r1, r1, r0, lsr #3 @ Get byte offset mov r3, r2, lsl r3 @ create mask + smp_dmb 1: ldrexb r2, [r1] ands r0, r2, r3 @ save old value of bit \instr r2, r2, r3 @ toggle bit strexb ip, r2, [r1] cmp ip, #0 bne 1b + smp_dmb cmp r0, #0 movne r0, #1 2: mov pc, lr |