Add a config option 'ATA_SYSFS_COMPAT' to create a compability
'ata' symlink in the PCI device sysfs directory.
Signed-off-by: Hannes Reinecke <hare@xxxxxxx>
---
drivers/ata/Kconfig | 10 ++++++++++
drivers/ata/libata-transport.c | 20 ++++++++++++++++++++
2 files changed, 30 insertions(+)
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index e5641e6c52ee..f27b12ba2ce7 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -51,6 +51,16 @@ config ATA_VERBOSE_ERROR
If unsure, say Y.
+config ATA_SYSFS_COMPAT
+ bool "Keep original sysfs layout"
+ default y
+ help
+ This option retains the original sysfs layout by adding an
+ additional ata_port object with the name of 'ataX' in
+ to the ATA objects like 'ata_port', 'ata_link', and 'ata_device'.
+
+ If unsure, say Y.
+
config ATA_FORCE
bool "\"libata.force=\" kernel parameter support" if EXPERT
default y
diff --git a/drivers/ata/libata-transport.c b/drivers/ata/libata-transport.c
index 555fe6e2293d..a66c3480bdcf 100644
--- a/drivers/ata/libata-transport.c
+++ b/drivers/ata/libata-transport.c
@@ -260,7 +260,13 @@ static int ata_tport_match(struct attribute_container *cont,
void ata_tport_delete(struct ata_port *ap)
{
struct device *dev = &ap->tdev;
+#ifdef CONFIG_ATA_SYSFS_COMPAT
+ struct device *parent = dev->parent;
+ char compat_name[64];
+ sprintf(compat_name, "ata%d", ap->print_id);
+ sysfs_remove_link(&parent->kobj, compat_name);
+#endif
ata_tlink_delete(&ap->link);
transport_remove_device(dev);
@@ -284,6 +290,9 @@ int ata_tport_add(struct device *parent,
{
int error;
struct device *dev = &ap->tdev;
+#ifdef CONFIG_ATA_SYSFS_COMPAT
+ char compat_name[64];
+#endif
device_initialize(dev);
dev->type = &ata_port_type;
@@ -313,8 +322,19 @@ int ata_tport_add(struct device *parent,
if (error) {
goto tport_link_err;
}
+
+#ifdef CONFIG_ATA_SYSFS_COMPAT
+ sprintf(compat_name, "ata%d", ap->print_id);
+ error = sysfs_create_link(&parent->kobj, &dev->kobj, compat_name);
+ if (error)
+ goto compat_link_err;
+#endif
return 0;
+#ifdef CONFIG_ATA_SYSFS_COMPAT
+ compat_link_err:
+ ata_tlink_delete(&ap->link);
+#endif
tport_link_err:
transport_remove_device(dev);
device_del(dev);
--
2.29.2
