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authorAlexandre Bounine <alexandre.bounine@idt.com>2013-07-03 15:09:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-03 16:08:05 -0700
commit6ca40c2565fc617534d20d10a5848b626213608c (patch)
tree8d0ddc5543772647e232158d7f332a25b3291ae7 /drivers/rapidio
parented5edee2f8547d5c2b28de21cb1471aaea71ee0a (diff)
rapidio: change endpoint device name format
Change endpoint device name format to use a component tag value instead of device destination ID. RapidIO specification defines a component tag to be a unique identifier for devices in a network. RapidIO switches already use component tag as part of their device name and also use it for device identification when processing error management event notifications. Forming an endpoint's device name using its component tag instead of destination ID allows to keep sysfs device directories unchanged in case if a routing process dynamically changes endpoint's destination ID as a result of route optimization. This change should not affect any existing users because a valid device destination ID always should be obtained by reading "destid" attribute and not by parsing device name. This patch also removes switchid member from struct rio_switch because it simply duplicates the component tag and does not have other use than in device name generation. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Andre van Herk <andre.van.herk@Prodrive.nl> Cc: Micha Nelissen <micha.nelissen@Prodrive.nl> Cc: Stef van Os <stef.van.os@Prodrive.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/rapidio')
-rw-r--r--drivers/rapidio/rio-scan.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/rapidio/rio-scan.c b/drivers/rapidio/rio-scan.c
index ab837fdb238..d3a6539a77c 100644
--- a/drivers/rapidio/rio-scan.c
+++ b/drivers/rapidio/rio-scan.c
@@ -433,7 +433,6 @@ static struct rio_dev *rio_setup_device(struct rio_net *net,
/* If a PE has both switch and other functions, show it as a switch */
if (rio_is_switch(rdev)) {
rswitch = rdev->rswitch;
- rswitch->switchid = rdev->comp_tag & RIO_CTAG_UDEVID;
rswitch->port_ok = 0;
spin_lock_init(&rswitch->lock);
rswitch->route_table = kzalloc(sizeof(u8)*
@@ -446,7 +445,7 @@ static struct rio_dev *rio_setup_device(struct rio_net *net,
rdid++)
rswitch->route_table[rdid] = RIO_INVALID_ROUTE;
dev_set_name(&rdev->dev, "%02x:s:%04x", rdev->net->id,
- rswitch->switchid);
+ rdev->comp_tag & RIO_CTAG_UDEVID);
if (do_enum)
rio_route_clr_table(rdev, RIO_GLOBAL_TABLE, 0);
@@ -459,7 +458,7 @@ static struct rio_dev *rio_setup_device(struct rio_net *net,
rio_enable_rx_tx_port(port, 0, destid, hopcount, 0);
dev_set_name(&rdev->dev, "%02x:e:%04x", rdev->net->id,
- rdev->destid);
+ rdev->comp_tag & RIO_CTAG_UDEVID);
}
rio_attach_device(rdev);