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authorIngo Molnar <mingo@elte.hu>2009-03-28 23:05:50 +0100
committerIngo Molnar <mingo@elte.hu>2009-03-28 23:05:50 +0100
commitb0d44c0dbbd52effb731b1c0af9afd56215c48de (patch)
tree3237c0087d91a5390aed05689b9f610ba16fa116 /drivers/block/cciss.c
parent9537a48ed4b9e4b738943d6da0a0fd4278adf905 (diff)
parent7c730ccdc1188b97f5c8cb690906242c7ed75c22 (diff)
Merge branch 'linus' into core/iommu
Conflicts: arch/x86/Kconfig
Diffstat (limited to 'drivers/block/cciss.c')
-rw-r--r--drivers/block/cciss.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 4f9b6d79201..5d0e135824f 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -3898,6 +3898,13 @@ static struct pci_driver cciss_pci_driver = {
*/
static int __init cciss_init(void)
{
+ /*
+ * The hardware requires that commands are aligned on a 64-bit
+ * boundary. Given that we use pci_alloc_consistent() to allocate an
+ * array of them, the size must be a multiple of 8 bytes.
+ */
+ BUILD_BUG_ON(sizeof(CommandList_struct) % 8);
+
printk(KERN_INFO DRIVER_NAME "\n");
/* Register for our PCI devices */