Commit Graph

1292 Commits

Author SHA1 Message Date
Linus Torvalds 15b0669072 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (44 commits)
  qlge: Fix sparse warnings for tx ring indexes.
  qlge: Fix sparse warning regarding rx buffer queues.
  qlge: Fix sparse endian warning in ql_hw_csum_setup().
  qlge: Fix sparse endian warning for inbound packet control block flags.
  qlge: Fix sparse warnings for byte swapping in qlge_ethool.c
  myri10ge: print MAC and serial number on probe failure
  pkt_sched: cls_u32: Fix locking in u32_change()
  iucv: fix cpu hotplug
  af_iucv: Free iucv path/socket in path_pending callback
  af_iucv: avoid left over IUCV connections from failing connects
  af_iucv: New error return codes for connect()
  net/ehea: bitops work on unsigned longs
  Revert "net: Fix for initial link state in 2.6.28"
  tcp: Kill extraneous SPLICE_F_NONBLOCK checks.
  tcp: don't mask EOF and socket errors on nonblocking splice receive
  dccp: Integrate the TFRC library with DCCP
  dccp: Clean up ccid.c after integration of CCID plugins
  dccp: Lockless integration of CCID congestion-control plugins
  qeth: get rid of extra argument after printk to dev_* conversion
  qeth: No large send using EDDP for HiperSockets.
  ...
2009-01-05 18:44:59 -08:00
Heiko Carstens 6ea2fde13a qeth: get rid of extra argument after printk to dev_* conversion
drivers/s390/net/qeth_l3_main.c: In function 'qeth_l3_setadapter_parms':
drivers/s390/net/qeth_l3_main.c:1049: warning: too many arguments for format

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-04 17:36:32 -08:00
Klaus-Dieter Wacker 015e691cfe qeth: No large send using EDDP for HiperSockets.
From: Klaus-Dieter Wacker <kdwacker@de.ibm.com>

The device driver qeth dos not support large send using EDDP for 
HiperSockets.

Signed-off-by: Klaus-Dieter Wacker <kdwacker@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-04 17:36:05 -08:00
Frank Blaschka 5b54e16f1a qeth: do not spin for SETIP ip assist command
The ip assist hw command for setting an IP address last unacceptable
long so we can not spin while we waiting for the irq. Since we can
ensure process context for all occurrences of this command we can use
wait.

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-04 17:35:44 -08:00
Ursula Braun fc9c24603c qeth: avoid crash in case of layer mismatch for VSWITCH
For z/VM GuestLAN or VSWITCH devices the transport layer is
configured in z/VM. The layer2 attribute of a participating Linux
device has to match the z/VM definition. In case of a mismatch
Linux currently crashes in qeth recovery due to a reference to the
not yet existing net_device.
Solution: add a check for existence of net_device and add a message
pointing to the mismatch of layer definitions in Linux and z/VM.

Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-04 17:35:18 -08:00
Ursula Braun fe94e2e0a6 qeth: exploit source MAC address for inbound layer3 packets
OSA-devices operating in layer3 mode offer adding of the source MAC
address to the QDIO header of inbound packets. The qeth driver can
exploit this functionality to replace FAKELL-entries in the ethernet
header of received packets.

Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-04 17:34:52 -08:00
Klaus-Dieter Wacker 906f1f0768 qeth: HiperSockets mcl string conversion (pre z9 mach)
The pre z9 machines provide an mcl string in EBCDIC format,
z9 or later provide string in ASCII format.

Signed-off-by: Klaus-Dieter Wacker <kdwacker@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-04 17:34:10 -08:00
Martin Schwidefsky 9cfb9b3c3a [PATCH] improve idle cputime accounting
Distinguish the cputime of the idle process where idle is actually using
cpu cycles from the cputime where idle is sleeping on an enabled wait psw.
The former is accounted as system time, the later as idle time.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-31 15:11:48 +01:00
Linus Torvalds 590cf28580 Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (104 commits)
  [SCSI] fcoe: fix configuration problems
  [SCSI] cxgb3i: fix select/depend problem
  [SCSI] fcoe: fix incorrect use of struct module
  [SCSI] cxgb3i: remove use of skb->sp
  [SCSI] cxgb3i: Add cxgb3i iSCSI driver.
  [SCSI] zfcp: Remove unnecessary warning message
  [SCSI] zfcp: Add support for unchained FSF requests
  [SCSI] zfcp: Remove busid macro
  [SCSI] zfcp: remove DID_DID flag
  [SCSI] zfcp: Simplify mask lookups for incoming RSCNs
  [SCSI] zfcp: Remove initial device data from zfcp_data
  [SCSI] zfcp: fix compile warning
  [SCSI] zfcp: Remove adapter list
  [SCSI] zfcp: Simplify SBAL allocation to fix sparse warnings
  [SCSI] zfcp: register with SCSI layer on ccw registration
  [SCSI] zfcp: Fix message line break
  [SCSI] qla2xxx: changes in multiq code
  [SCSI] eata: fix the data buffer accessors conversion regression
  [SCSI] ibmvfc: Improve async event handling
  [SCSI] lpfc : correct printk types on PPC compiles
  ...
2008-12-30 17:43:10 -08:00
Christian Borntraeger be3c5832d5 kvm-s390: implement config_changed for virtio on s390
This patch implements config_changed for the s390 virtio transport.

We use the least significant bit of the interrupt parameter field
to decide, if this interrupt should call the virtio virtqueue callback
or the config_changed callback.

This method is compatible with old host and guest code. Old 64 bit guests
will not check the bit and trigger a harmless additional vring_interrupt
call. Old host code will never set this bit, this is also safe.

This patch also takes care of a potential future 31 bit virtio transport
for s390. On 31 bit _LC_PFAULT_INTPARM and __LC_EXT_PARAMS are identical.
We exploit the alignment of the token and fold the change bit into the
lsb of the token itself.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-12-30 09:26:11 +10:30
Rusty Russell 87c7d57c17 virtio: hand virtio ring alignment as argument to vring_new_virtqueue
This allows each virtio user to hand in the alignment appropriate to
their virtio_ring structures.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
2008-12-30 09:26:03 +10:30
Rusty Russell db40598863 virtio: use KVM_S390_VIRTIO_RING_ALIGN instead of relying on pagesize
This doesn't really matter, since s390 pagesize is 4k anyway.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
2008-12-30 09:26:03 +10:30
Christof Schmitt b632ade282 [SCSI] zfcp: Remove unnecessary warning message
Remove a message that was emitted for a port that could not initially
be opened. This is a rare case when the port discovery hits an
initiator port and only confuses the user with an initator port logged
in the message. Remove the whole special case: The failed "open port"
request triggers required follow-up actions anyway.

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Acked-by: Felix Beck <felix@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-29 11:38:29 -06:00
Christof Schmitt 39eb7e9aca [SCSI] zfcp: Add support for unchained FSF requests
Add the support to send CT and ELS requests as unchained FSF requests. This is
required for older hardware and was somehow omitted during the cleanup of the
FSF layer. The req_count and resp_count attributes are unused, so remove them
instead of adding a special case for setting them. Also add debug data and a
warning, when the ct request hits a limit.

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Acked-by: Martin Petermann <martin@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-29 11:38:28 -06:00
Christof Schmitt b225cf9b80 [SCSI] zfcp: Remove busid macro
With the change to the dev_ message macros, the macro to get the busid
is only used in a few places. Remove it and directly get the dev_name
from the device.

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-29 11:38:28 -06:00
Christof Schmitt b98478d71b [SCSI] zfcp: remove DID_DID flag
The port flag DID_DID indicates whether we know the current id of the
port. This is always set in parallel. Since the id 0 is invalid
(because the port id 0 is invalid) we can remove the DID_DID flag:
d_id of 0 indicates an invalid d_id != 0 is a valid one.

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Acked-by: Felix Beck <felix@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-29 11:38:28 -06:00
Christof Schmitt e0d7fcb5ec [SCSI] zfcp: Simplify mask lookups for incoming RSCNs
Use an array for looking up the mask corresponding to the 2-bit
information instead of the switch/case.

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Acked-by: Felix Beck <felix@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-29 11:38:27 -06:00
Christof Schmitt 3623ecba19 [SCSI] zfcp: Remove initial device data from zfcp_data
The information from the kernel parameter is only needed during init.
Keep the three pieces (busid, wwpn and lun) local to simplify the
global zfcp_data structures. While at it, also remove the unused
loglevel variable and give the module parameter variable a better
name.

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Acked-by: Felix Beck <felix@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-29 11:38:27 -06:00
Heiko Carstens 06499fac65 [SCSI] zfcp: fix compile warning
Get rid of this one:

drivers/s390/scsi/zfcp_erp.c: In function 'zfcp_erp_thread':
drivers/s390/scsi/zfcp_erp.c:1400: warning: ignoring return value of
'down_interruptible', declared with attribute warn_unused_result

zfcp_erp_thread is a kernel thread which can't receive any signals.
So introduce a dummy variable and get rid of the warning.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-29 11:24:36 -06:00
Christof Schmitt b228af0269 [SCSI] zfcp: Remove adapter list
After the latest changes, the list of FCP devices is only used to
lookup the adapter for requests from the actcli tool. Change this to
use the lookup function in the cio layer. Now we can remove the
adapter list and have one place less to use the global config_lock.

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Acked-by: Felix Beck <felix@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-29 11:24:36 -06:00
Christof Schmitt dedbc2b3cb [SCSI] zfcp: Simplify SBAL allocation to fix sparse warnings
When waiting for a request claim the SBAL before waiting. This way,
locking before each check of the free counter is not required and
sparse does not emit warnings for the complicated locking scheme.

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Acked-by: Felix Beck <felix@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-29 11:24:36 -06:00
Swen Schillig 1d3aab084a [SCSI] zfcp: register with SCSI layer on ccw registration
Synchronize the registration and de-registration with the SCSI layer
at CCW registration, de-registration. Before we registered with the
SCSI layer on adapter activation. This way the reg and de-reg process
is in balance.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-29 11:24:35 -06:00
Christof Schmitt 27c3f0a6e4 [SCSI] zfcp: Fix message line break
Move the closing parenthesis before the line break.

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Acked-by: Felix Beck <felix@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-29 11:24:35 -06:00
Linus Torvalds 0191b625ca Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1429 commits)
  net: Allow dependancies of FDDI & Tokenring to be modular.
  igb: Fix build warning when DCA is disabled.
  net: Fix warning fallout from recent NAPI interface changes.
  gro: Fix potential use after free
  sfc: If AN is enabled, always read speed/duplex from the AN advertising bits
  sfc: When disabling the NIC, close the device rather than unregistering it
  sfc: SFT9001: Add cable diagnostics
  sfc: Add support for multiple PHY self-tests
  sfc: Merge top-level functions for self-tests
  sfc: Clean up PHY mode management in loopback self-test
  sfc: Fix unreliable link detection in some loopback modes
  sfc: Generate unique names for per-NIC workqueues
  802.3ad: use standard ethhdr instead of ad_header
  802.3ad: generalize out mac address initializer
  802.3ad: initialize ports LACPDU from const initializer
  802.3ad: remove typedef around ad_system
  802.3ad: turn ports is_individual into a bool
  802.3ad: turn ports is_enabled into a bool
  802.3ad: make ntt bool
  ixgbe: Fix set_ringparam in ixgbe to use the same memory pools.
  ...

Fixed trivial IPv4/6 address printing conflicts in fs/cifs/connect.c due
to the conversion to %pI (in this networking merge) and the addition of
doing IPv6 addresses (from the earlier merge of CIFS).
2008-12-28 12:49:40 -08:00
Peter Tiedemann 2a7c6f2c39 [S390] convert ctcm printks to dev_xxx and pr_xxx macros.
Signed-off-by: Peter Tiedemann <ptiedem@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:27 +01:00
Christof Schmitt ecf39d4212 [S390] convert zfcp printks to pr_xxx macros.
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:27 +01:00
Martin Schwidefsky 5466c2e43e [S390] convert vmlogrdr printks to pr_xxx macros.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:26 +01:00
Michael Holzheu 17159dc6fb [S390] convert zfcp dumper printks to pr_xxx macros.
Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:26 +01:00
Frank Blaschka 74eacdb9c2 [S390] convert qeth printks to dev_xxx and pr_xxx macros.
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:25 +01:00
Martin Schwidefsky b3ff088b30 [S390] convert sclp printks to pr_xxx macros.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:24 +01:00
Ursula Braun 8f7c502c26 [S390] convert iucv printks to dev_xxx and pr_xxx macros.
Signed-off-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:24 +01:00
Martin Schwidefsky 136f7a1c42 [S390] convert ap_bus printks to pr_xxx macros.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:24 +01:00
Hongjie Yang 93098bf015 [S390] convert dcssblk and extmem printks messages to pr_xxx macros.
Signed-off-by: Hongjie Yang <hongjie@us.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:23 +01:00
Melissa Howland 1519c0c6eb [S390] convert monwriter printks to pr_xxx macros.
Signed-off-by: Melissa Howland <melissah@us.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:23 +01:00
Gerald Schaefer a4f5a299cf [S390] convert monreader printks to pr_xxx macros.
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:22 +01:00
Michael Ernst e6d5a428e0 [S390] convert cio printks to pr_xxx macros.
Signed-off-by: Michael Ernst <mernst@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:20 +01:00
Frank Munzert 80a5c36d1d [S390] convert vmur printks to pr_xxx macros.
Signed-off-by: Frank Munzert <munzert@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:19 +01:00
Klaus-D. Wacker c99fc5dadc [S390] convert lcs printks to dev_xxx and pr_xxx macros.
Signed-off-by: Klaus-D. Wacker <kdwacker@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:18 +01:00
Christian Borntraeger 8988e58f8b [S390] convert vmcp printks to pr_xxx macros.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:18 +01:00
Martin Schwidefsky d1c2f8928a [S390] convert xpram printks to pr_xxx macros.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:18 +01:00
Julia Lawall acfa922c5a [S390] s390: Remove redundant test
The loop above the modified code only terminates when rc is a valid pointer.

A simplified version of the semantic patch that makes this change is as
follows: (http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@r exists@
local idexpression x;
expression E;
position p1,p2;
@@

if (x@p1 == NULL || ...) { ... when forall
   return ...; }
... when != \(x=E\|x--\|x++\|--x\|++x\|x-=E\|x+=E\|x|=E\|x&=E\|&x\)
(
x@p2 == NULL
|
x@p2 != NULL
)

// another path to the test that is not through p1?
@s exists@
local idexpression r.x;
position r.p1,r.p2;
@@

... when != x@p1
(
x@p2 == NULL
|
x@p2 != NULL
)

@fix depends on !s@
position r.p1,r.p2;
expression x,E;
statement S1,S2;
@@

(
- if ((x@p2 != NULL) || ...)
  S1
|
- if ((x@p2 == NULL) && ...) S1
|
- BUG_ON(x@p2 == NULL);
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:17 +01:00
Julia Lawall 21e7b2c4d5 [S390] drivers/s390/crypto: Move dereference to after IS_ERR test
If reply is ERR_PTR(...), then it should not be dereferenced, so I have
moved the dereference from the declaration to after the IS_ERR test.

The semantic match that finds the problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@match exists@
expression x, E;
identifier fld;
position p1,p2;
@@

(
x = E;
|
x = E
|
x@p1->fld
... when != x = E
IS_ERR(x@p2)
... when any
)

@other_match exists@
expression match.x, E1, E2;
position match.p1,match.p2;
@@

x = E1
... when != x = E2
    when != x@p1
x@p2

@ script:python depends on !other_match@
p1 << match.p1;
p2 << match.p2;
@@

print "* file %s dereference %s test %s" % (p1[0].file,p1[0].line,p2[0].line)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:16 +01:00
Heiko Carstens b3b59d3339 [S390] sclp vt220: fix compile warning
get rid of this one:

  CC      drivers/s390/char/sclp_vt220.o
drivers/s390/char/sclp_vt220.c:588: warning: '__sclp_vt220_flush_buffer' defined but not used

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:12 +01:00
Sebastian Ott d36f0c6638 [S390] cio: use pim to check for multipath.
To check if multipath is available we count the bits set in lpm,
which could change over time (via configure [on|off] of a path).

The following patch uses the pim (which is persistent) for this
decision.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:11 +01:00
Sebastian Ott f444cc0e52 [S390] cio: commit all pmcw changes.
Sometimes we change the pmcw configuration but don't call msch
to transmit these changes to the channel subsystem.

The patch fixes this by calling cio_commit_config in such cases.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:10 +01:00
Sebastian Ott 13952ec12d [S390] cio: introduce cio_commit_config
To change the configuration of a subchannel we alter the modifiable
bits of the subchannel's schib field and issue a modify subchannel.
There can be the case that not all changes were applied -or worse-
quietly overwritten by the hardware. With the next store subchannel
we obtain the current state of the hardware but lose our target
configuration.

With this patch we introduce a subchannel_config structure which
contains the target subchannel configuration. Additionally the msch
wrapper cio_modify is replaced with cio_commit_config which
copies the desired changes to a temporary schib. msch is then
called with the temporary schib. This schib is only written back
to the subchannel if all changes were applied.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:10 +01:00
Sebastian Ott cdb912a40d [S390] cio: introduce cio_update_schib
There is the chance that we get condition code 0 for a stsch but
the resulting schib is not vaild. In the current code there are
2 cases:
* we do a check for validity of the schib after stsch, but at this
  time we have already stored the invaild schib in the subchannel
  structure. This may lead to problems.
* we don't do a check for validity, which is not that good either.

The patch addresses both issues by introducing the stsch wrapper
cio_update_schib which performs stsch on a local schib. This schib
is only written back to the subchannel if it's valid.

side note: For some functions (chp_events) the return codes are
different now (-ENXIO vs -ENODEV) but this shouldn't do harm
since the caller doesn't check for _specific_ errors.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:10 +01:00
Cornelia Huck d6a30761d8 [S390] cio: Use device_is_registered().
Check if a ccw device is registered via device_is_registered()
and not via the old kludge of checking the membership in driver
core internal klists.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:09 +01:00
Cornelia Huck 283fdd0b8a [S390] cio: Dont call ->release directly.
Just put the cdev's reference count to give up our reference.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:09 +01:00
Cornelia Huck 90ed2b692f [S390] cio: Dont fail probe for I/O subchannels.
If we fail the probe for an I/O subchannel, we won't be able
to unregister it again since there are no sch_event()
callbacks for unbound subchannels. Just succeed the probe in
any case and schedule unregistering the subchannel.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:08 +01:00