kernel_optimize_test/drivers/firewire
Stefan Richter be6f48b017 firewire: fw-sbp2: don't retry login or reconnect after unplug
If a device is being unplugged while fw-sbp2 had a login or reconnect on
schedule, it would take about half a minute to shut the fw_unit down:

    Jan 27 18:34:54 stein firewire_sbp2: logged in to fw2.0 LUN 0000 (0 retries)
    <unplug>
    Jan 27 18:34:59 stein firewire_sbp2: sbp2_scsi_abort
    Jan 27 18:34:59 stein scsi 25:0:0:0: Device offlined - not ready after error recovery
    Jan 27 18:35:01 stein firewire_sbp2: orb reply timed out, rcode=0x11
    Jan 27 18:35:06 stein firewire_sbp2: orb reply timed out, rcode=0x11
    Jan 27 18:35:12 stein firewire_sbp2: orb reply timed out, rcode=0x11
    Jan 27 18:35:17 stein firewire_sbp2: orb reply timed out, rcode=0x11
    Jan 27 18:35:22 stein firewire_sbp2: orb reply timed out, rcode=0x11
    Jan 27 18:35:27 stein firewire_sbp2: orb reply timed out, rcode=0x11
    Jan 27 18:35:32 stein firewire_sbp2: orb reply timed out, rcode=0x11
    Jan 27 18:35:32 stein firewire_sbp2: failed to login to fw2.0 LUN 0000
    Jan 27 18:35:32 stein firewire_sbp2: released fw2.0

After this patch, typically only a few seconds spent in __scsi_add_device
remain:

    Jan 27 19:05:50 stein firewire_sbp2: logged in to fw2.0 LUN 0000 (0 retries)
    <unplug>
    Jan 27 19:05:56 stein firewire_sbp2: sbp2_scsi_abort
    Jan 27 19:05:56 stein scsi 33:0:0:0: Device offlined - not ready after error recovery
    Jan 27 19:05:56 stein firewire_sbp2: released fw2.0

The benefit of this is less noise in the syslog.  It furthermore avoids
a few wasted CPU cycles and needlessly prolonged lifetime of a few
driver objects.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Jarod Wilson <jwilson@redhat.com>
2008-02-16 15:40:33 +01:00
..
fw-card.c firewire: fix unloading of fw-ohci while devices are attached 2007-08-25 18:00:27 +02:00
fw-cdev.c firewire: fix "kobject_add failed for fw* with -EEXIST" 2008-02-16 15:40:33 +01:00
fw-device.c firewire: fix "kobject_add failed for fw* with -EEXIST" 2008-02-16 15:40:33 +01:00
fw-device.h firewire: fix "kobject_add failed for fw* with -EEXIST" 2008-02-16 15:40:33 +01:00
fw-iso.c firewire: Clean up comment style. 2007-05-10 18:24:13 +02:00
fw-ohci.c firewire: fw-ohci: Dynamically allocate buffers for DMA descriptors 2008-01-30 22:22:24 +01:00
fw-ohci.h firewire: fw-ohci: check for misconfigured bus (phyID == 63) 2007-10-17 00:00:08 +02:00
fw-sbp2.c firewire: fw-sbp2: don't retry login or reconnect after unplug 2008-02-16 15:40:33 +01:00
fw-topology.c firewire: enforce access order between generation and node ID, fix "giving up on config rom" 2008-01-30 22:22:27 +01:00
fw-topology.h firewire: a header cleanup 2007-10-17 00:00:09 +02:00
fw-transaction.c firewire: replace subtraction with bitwise and 2008-01-30 22:22:28 +01:00
fw-transaction.h firewire: fw-sbp2: set correct maximum payload (fixes CardBus adapters) 2007-08-02 20:34:16 +02:00
Kconfig firewire: point to migration document 2007-10-07 13:48:41 +02:00
Makefile firewire: prefix modules with firewire- instead of fw- 2007-05-27 23:21:01 +02:00