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Diffstat (limited to 'drivers/ata/libata-scsi.c')
-rw-r--r--drivers/ata/libata-scsi.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 061eebf85e6d..75bd7792df02 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -36,6 +36,7 @@
#include <linux/suspend.h>
#include <asm/unaligned.h>
#include <linux/ioprio.h>
+#include <linux/of.h>
#include "libata.h"
#include "libata-transport.h"
@@ -4579,6 +4580,34 @@ int ata_scsi_add_hosts(struct ata_host *host, struct scsi_host_template *sht)
return rc;
}
+#ifdef CONFIG_OF
+static void ata_scsi_assign_ofnode(struct ata_device *dev, struct ata_port *ap)
+{
+ struct scsi_device *sdev = dev->sdev;
+ struct device *d = ap->host->dev;
+ struct device_node *np = d->of_node;
+ struct device_node *child;
+
+ for_each_available_child_of_node(np, child) {
+ int ret;
+ u32 val;
+
+ ret = of_property_read_u32(child, "reg", &val);
+ if (ret)
+ continue;
+ if (val == dev->devno) {
+ dev_dbg(d, "found matching device node\n");
+ sdev->sdev_gendev.of_node = child;
+ return;
+ }
+ }
+}
+#else
+static void ata_scsi_assign_ofnode(struct ata_device *dev, struct ata_port *ap)
+{
+}
+#endif
+
void ata_scsi_scan_host(struct ata_port *ap, int sync)
{
int tries = 5;
@@ -4604,6 +4633,7 @@ void ata_scsi_scan_host(struct ata_port *ap, int sync)
NULL);
if (!IS_ERR(sdev)) {
dev->sdev = sdev;
+ ata_scsi_assign_ofnode(dev, ap);
scsi_device_put(sdev);
} else {
dev->sdev = NULL;