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>
mariux64 · Mar 5, 2009 · 84bda12 · 84bda12
1 parent 5825627
commit 84bda12
Showing 1 changed file with 2 additions and 1 deletion.
diff --git 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