From: Tejun Heo <tj@kernel.org>
Date: Mon, 2 Mar 2009 09:53:26 +0000 (+0900)
Subject: libata: align ap->sector_buf
X-Git-Tag: v2.6.29-rc8~63^2~5
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=84bda12af31f930e4200c5244aa111de2485d7b0;p=platform%2Fupstream%2Fkernel-adaptation-pc.git

libata: align ap->sector_buf

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>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---

diff --git a/include/linux/libata.h b/include/linux/libata.h
index fbf064e..dc18b87 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -751,7 +751,8 @@ 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