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authorHannes Reinecke <hare@suse.de>2021-12-21 10:20:26 +0300
committerDamien Le Moal <damien.lemoal@opensource.wdc.com>2022-01-04 14:00:45 +0300
commit6c952a0dc9c3ced98c4c8aa7cd11c25c59157f1f (patch)
tree3f63a8e56e69d074efea95aefaa9e7a224f8c86c /drivers/ata/libata-transport.c
parentbb6a42d7104644bb8d59fac9a93b69d7790ff15e (diff)
downloadlinux-6c952a0dc9c3ced98c4c8aa7cd11c25c59157f1f.tar.xz
ata: libata: Add ata_port_classify() helper
Add an ata_port_classify() helper to print out the results from the device classification and remove the debugging statements from ata_dev_classify(). Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Diffstat (limited to 'drivers/ata/libata-transport.c')
-rw-r--r--drivers/ata/libata-transport.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/ata/libata-transport.c b/drivers/ata/libata-transport.c
index 4162d625fc92..ca129854a88c 100644
--- a/drivers/ata/libata-transport.c
+++ b/drivers/ata/libata-transport.c
@@ -321,6 +321,36 @@ int ata_tport_add(struct device *parent,
return error;
}
+/**
+ * ata_port_classify - determine device type based on ATA-spec signature
+ * @ap: ATA port device on which the classification should be run
+ * @tf: ATA taskfile register set for device to be identified
+ *
+ * A wrapper around ata_dev_classify() to provide additional logging
+ *
+ * RETURNS:
+ * Device type, %ATA_DEV_ATA, %ATA_DEV_ATAPI, %ATA_DEV_PMP,
+ * %ATA_DEV_ZAC, or %ATA_DEV_UNKNOWN the event of failure.
+ */
+unsigned int ata_port_classify(struct ata_port *ap,
+ const struct ata_taskfile *tf)
+{
+ int i;
+ unsigned int class = ata_dev_classify(tf);
+
+ /* Start with index '1' to skip the 'unknown' entry */
+ for (i = 1; i < ARRAY_SIZE(ata_class_names); i++) {
+ if (ata_class_names[i].value == class) {
+ ata_port_dbg(ap, "found %s device by sig\n",
+ ata_class_names[i].name);
+ return class;
+ }
+ }
+
+ ata_port_info(ap, "found unknown device (class %u)\n", class);
+ return class;
+}
+EXPORT_SYMBOL_GPL(ata_port_classify);
/*
* ATA link attributes