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From: Ben Hutchings <ben@decadent.org.uk>
Date: Tue, 13 May 2014 18:39:19 +0100
Subject: libata: Avoid ABI change in 3.14.4
Commit 8a4aeec8d2d6 ("libata/ahci: accommodate tag ordered
controllers") added the ata_port::last_tag field. As this structure
is always allocated in libata (by ata_port_alloc()) and the field is
only used by libata, we can move it to the end and hide it from
genksyms.
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -822,7 +822,6 @@ struct ata_port {
unsigned long qc_allocated;
unsigned int qc_active;
int nr_active_links; /* #links with active qcs */
- unsigned int last_tag; /* track next tag hw expects */
struct ata_link link; /* host default link */
struct ata_link *slave_link; /* see ata_slave_link_init() */
@@ -863,6 +862,10 @@ struct ata_port {
#endif
/* owned by EH */
u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
+
+#ifndef __GENKSYMS__
+ unsigned int last_tag; /* track next tag hw expects */
+#endif
};
/* The following initializer overrides a method to NULL whether one of
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