[PATCH #upstream-fixes 1/2] libata: align ap->sector_buf

[Tejun Heo <tj@kernel.org>]

ap->sector_buf is used as DMA target and should at least be aligned on
cacheline.  This caused problems on some embedded machines.

Signed-off-by: Tejun Heo <tj@kernel.org>
---
 include/linux/libata.h |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/libata.h b/include/linux/libata.h
index c82695d..4234973 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -750,7 +750,8 @@ struct ata_port {
 	acpi_handle		acpi_handle;
 	struct ata_acpi_gtm	__acpi_init_gtm; /* use ata_acpi_init_gtm() */
 #endif
-	u8			sector_buf[ATA_SECT_SIZE]; /* owned by EH */
+	/* owned by EH */
+	u8			sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
 };
 
 /* The following initializer overrides a method to NULL whether one of