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authorKay Sievers <kay@vrfy.org>2013-01-17 00:00:02 +0100
committerKay Sievers <kay@vrfy.org>2013-01-17 00:00:02 +0100
commit59d86149b062c382aa560798426bc9f3f667403f (patch)
tree52b6cbe045c6aa11c3c9f9a43f60e8bd3b55fe1b
parent5d4caf565471ff3401bd9b53aa814c8545a18a93 (diff)
udev: path_id - clarify comment about the kernel ATA naming problem
-rw-r--r--src/udev/udev-builtin-path_id.c17
1 files changed, 10 insertions, 7 deletions
diff --git a/src/udev/udev-builtin-path_id.c b/src/udev/udev-builtin-path_id.c
index c2c9161c94..d6b3736aee 100644
--- a/src/udev/udev-builtin-path_id.c
+++ b/src/udev/udev-builtin-path_id.c
@@ -356,7 +356,7 @@ static struct udev_device *handle_scsi(struct udev_device *parent, char **path)
goto out;
}
- /* lousy scsi sysfs does not have a "subsystem" for the transport */
+ /* scsi sysfs does not have a "subsystem" for the transport */
name = udev_device_get_syspath(parent);
if (strstr(name, "/rport-") != NULL) {
@@ -375,12 +375,15 @@ static struct udev_device *handle_scsi(struct udev_device *parent, char **path)
}
/*
- * We do not support the ATA transport class, it creates duplicated link
- * names as the fake SCSI host adapters are all separated, they are all
- * re-based as host == 0. ATA should just stop faking two duplicated
- * hierarchies for a single topology and leave the SCSI stuff alone;
- * until that happens, there are no by-path/ links for ATA devices behind
- * an ATA transport class.
+ * We do not support the ATA transport class, it uses global counters
+ * to name the ata devices which numbers spread across multiple
+ * controllers.
+ *
+ * The real link numbers are not exported. Also, possible chains of ports
+ * behind port multipliers cannot be composed that way.
+ *
+ * Until all that is solved at the kernel level, there are no by-path/
+ * links for ATA devices.
*/
if (strstr(name, "/ata") != NULL) {
parent = NULL;