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path: root/drivers/s390
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2011-08-24[S390] memory hotplug: only unassign assigned incrementsHeiko Carstens1-2/+4
Make sure that only assigned storage increments are unassigned when attaching a storage element. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-08-24[S390] drivers/s390/block/dasd_ioctl.c: add missing kfreeJulia Lawall1-3/+7
Data is only used to temporarily hold information to be copied to the user level, so it should be freed before leaving the function. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @exists@ local idexpression x; statement S,S1; expression E; identifier fl; expression *ptr != NULL; @@ x = \(kmalloc\|kzalloc\|kcalloc\)(...); ... if (x == NULL) S <... when != x when != if (...) { <+...kfree(x)...+> } when any when != true x == NULL x->fl ...> ( if (x == NULL) S1 | if (...) { ... when != x when forall ( return \(0\|<+...x...+>\|ptr\); | * return ...; ) } ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-08-03[S390] qdio: Use kstrtoul_from_userPeter Huewe1-9/+3
This patch replaces the code for getting an unsigned long from a userspace buffer by a simple call to kstroul_from_user. This makes it easier to read and less error prone. Signed-off-by: Peter Huewe <peterhuewe@gmx.de> Acked-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2011-08-03[S390] sclp_async: Use kstrtoul_from_userPeter Huewe1-6/+3
This patch replaces the code for getting an unsigned long from a userspace buffer by a simple call to kstroul_from_user. This makes it easier to read and less error prone. Signed-off-by: Peter Huewe <peterhuewe@gmx.de> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2011-08-03[S390] dasd: check if raw track access is supportedStefan Haberland1-0/+9
To use raw track access some special storage server commands are needed. Older storage hardware may not support these commands. So check if raw track access is possible while setting the DASD online. Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2011-08-03[S390] dasd: use vmalloc for statistics input bufferStefan Weinhuber2-6/+7
The size of the buffer that is used to store DASD statistics input strings depends on the user input. If the input string is to large, the write operation could fail with -ENOMEM. To avoid this, use vmalloc instead of kmalloc. Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2011-08-03[S390] qdio: 2nd stage retry on SIGA-W busy conditionsJan Glauber2-3/+20
The SIGA-W may return with the busy bit set which means the device was blocked. The busy loop which retries the SIGA-W for 100us may not be long enough when running under a heavily loaded hypervisor. Extend the retry mechanism by adding a longer second stage which retries the SIGA-W for up to 10s. In difference to the first retry loop the second stage is using mdelay to stop the cpu between the retries and thereby avoid additional preassure in on the hypervisor. If the second stage retry is successfull a device reset is avoided. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2011-07-26atomic: use <linux/atomic.h>Arun Sharma15-15/+15
This allows us to move duplicated code in <asm/atomic.h> (atomic_inc_not_zero() for now) to <linux/atomic.h> Signed-off-by: Arun Sharma <asharma@fb.com> Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Miller <davem@davemloft.net> Cc: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-24[S390] dasd: add enhanced DASD statistics interfaceStefan Weinhuber4-91/+686
This patch extends the DASD statistics to allow for a more detailed analysis of DASD I/O operations. In particular we want the statistics to provide answers to the following questions: - How many requests used a PAV alias? - How many requests used High Performance FICON? - How do read request perform versus write requests? The existing DASD statistics interface has several shortcomings - The interface for global data is a formatted text table in procfs (/proc/dasd/statistics). The layout is meant for human readers and is not to easy to parse. If values get to large for the table layout, they get scaled down. - The statistics which are collected per block device can be accessed via an ioctl interface, which can only be extended by defining a new ioctl. - There is no statistics interface for individual PAV base and alias devices. To overcome theses shortcomings we create a new DASD statistics interface in debugfs. This interface will contain one entry for global data, one per DASD block device, and one per DASD base and alias device. Each file contains the statistic data in easy to parse name/value and name/array pairs. The existing interfaces will remain functional, but they will not be extended. Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-07-24[S390] ap: toleration support for ap device type 10Holger Dengler2-27/+91
Add toleration support for ap devices with device type 10. Signed-off-by: Holger Dengler <hd@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-07-24[S390] qdio: clear shared DSCI before scheduling the queue handlerJan Glauber1-10/+5
The following race can occur with qdio devices that use the shared device state change indicator: Device (Shared DSCI) CPU0 CPU1 =============================================================================== 1. DSCI 0 => 1, INT pending 2. Thinint handler * si_used = 1 * Inbound tasklet_schedule * DSCI 1 => 0 3. DSCI 0 => 1, INT pending 4. Thinint handler * si_used = 1 * Inbound tasklet_schedu le => NOP 5. Inbound tasklet run 6. DSCI = 1, INT surpressed 7. DSCI 1 => 0 The race would lead to a stall where new data in the input queue is not recognized so the device stops working in case of no further traffic. Fix the race by resetting the DSCI before scheduling the inbound tasklet so the device generates an interrupt if new data arrives in the above scenario in step 6. Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-07-24[S390] kconfig: remove tape interface support commentMartin Schwidefsky1-3/+0
There is nothing below the menu entry "S/390 tape interface support". Remove it. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-07-22Merge branch 'for-linus' of ↵Linus Torvalds2-6/+6
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: (51 commits) PM: Improve error code of pm_notifier_call_chain() PM: Add "RTC" to PM trace time stamps to avoid confusion PM / Suspend: Export suspend_set_ops, suspend_valid_only_mem PM / Suspend: Add .suspend_again() callback to suspend_ops PM / OPP: Introduce function to free cpufreq table ARM / shmobile: Return -EBUSY from A4LC power off if A3RV is active PM / Domains: Take .power_off() error code into account ARM / shmobile: Use genpd_queue_power_off_work() ARM / shmobile: Use pm_genpd_poweroff_unused() PM / Domains: Introduce function to power off all unused PM domains OMAP: PM: disable idle on suspend for GPIO and UART OMAP: PM: omap_device: add API to disable idle on suspend OMAP: PM: omap_device: add system PM methods for PM domain handling OMAP: PM: omap_device: conditionally use PM domain runtime helpers PM / Runtime: Add new helper function: pm_runtime_status_suspended() PM / Domains: Queue up power off work only if it is not pending PM / Domains: Improve handling of wakeup devices during system suspend PM / Domains: Do not restore all devices on power off error PM / Domains: Allow callbacks to execute all runtime PM helpers PM / Domains: Do not execute device callbacks under locks ...
2011-07-21qeth: do vlan cleanupJiri Pirko3-56/+47
- unify vlan and nonvlan rx path - kill card->vlangrp and qeth_l3_vlan_rx_register Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-17net: Abstract dst->neighbour accesses behind helpers.David S. Miller1-7/+18
dst_{get,set}_neighbour() Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-15PM: Improve error code of pm_notifier_call_chain()Akinobu Mita2-6/+6
This enables pm_notifier_call_chain() to get the actual error code in the callback rather than always assume -EINVAL by converting all PM notifier calls to return encapsulate error code with notifier_from_errno(). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2011-06-20Merge branch 'master' of ↵David S. Miller6-62/+68
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/wireless/iwlwifi/iwl-agn-rxon.c drivers/net/wireless/rtlwifi/pci.c net/netfilter/ipvs/ip_vs_core.c
2011-06-06net: remove interrupt.h inclusion from netdevice.hAlexey Dobriyan1-0/+1
* remove interrupt.g inclusion from netdevice.h -- not needed * fixup fallout, add interrupt.h and hardirq.h back where needed. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-06[S390] qdio: Split SBAL entry flagsJan Glauber6-62/+68
The qdio SBAL entry flag is made-up of four different values that are independent of one another. Some of the bits are reserved by the hardware and should not be changed by qdio. Currently all four values are overwritten since the SBAL entry flag is defined as an u32. Split the SBAL entry flag into four u8's as defined by the hardware and don't touch the reserved bits. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-05-26[S390] irq: merge irq.c and s390_ext.cHeiko Carstens3-3/+1
Merge irq.c and s390_ext.c into irq.c. That way all external interrupt related functions are together. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-05-26[S390] irq: fix service signal external interrupt handlingHeiko Carstens3-6/+6
Interrupt sources like pfault, sclp, dasd_diag and virtio all use the service signal external interrupt subclass mask in control register 0 to enable and disable the corresponding interrupt. Because no reference counting is implemented each subsystem thinks it is the only user of subclass and sets and clears the bit like it wants. This leads to case that unloading the dasd diag module under z/VM causes both sclp and pfault interrupts to be masked. The result will be locked up system sooner or later. Fix this by introducing a new way to set (register) and clear (unregister) the service signal subclass mask bit in cr0. Also convert all drivers. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-05-23[S390] get CPC image nameMartin Schwidefsky3-1/+148
Provide sysfs attributes that contain the CPC name and the HMC network name of the machine the operating system is running on. This information is retrieved with the operation communication parameters (OCF) sclp interface. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-05-23[S390] sclp: event buffer dissectionMartin Schwidefsky2-84/+60
Move gds vector/subvector find functions to the sclp header file. Simplify event buffer dissection in sclp tty code. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-05-23[S390] chsc: process channel-path-availability informationSebastian Ott1-1/+34
Update affected channel path descriptors when receiving channel path availability information. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-05-23[S390] qdio: prevent compile warningJan Glauber1-1/+1
Prevent the following compile warning for !CONFIG_64BIT: CC drivers/s390/cio/qdio_main.o drivers/s390/cio/qdio_main.c: In function ‘handle_outbound’: drivers/s390/cio/qdio_main.c:1449: warning: ‘state’ may be used uninitialized in this function Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-05-23[S390] sclp: remove unnecessary sendmask checkHeiko Carstens1-13/+1
The sendmask check is not needed. Remove it. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-05-23[S390] ap: skip device registration on type probe failureHolger Dengler1-2/+6
The registration of an ap device will be skipped, if the device type probing fails. Add names of current crypto adapters to the Kconfig help. Signed-off-by: Holger Dengler <hd@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-05-23[S390] tape: remove unused/not handled return codesHeiko Carstens2-6/+2
Return codes are on purpose not handled or used. So remove them. Acked-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-05-23[S390] monwriter: fix return code handlingHeiko Carstens1-2/+2
Fix return code handling within monwrite_new_hdr(). Return code handling is everwhere implemented, the return code of the diagnose function was just not passed. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-05-23[S390] dasd: fix return code handlingHeiko Carstens1-2/+1
Check return value of itcw_add_dcw() for error code and return it. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-05-23[S390] get rid of unused variablesHeiko Carstens7-29/+0
Remove trivially unused variables as detected with -Wunused-but-set-variable. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-05-23[S390] Remove tape block device driver.Heiko Carstens3-457/+0
Remove the tape block device driver. It's not of real use but has already created some confusion when users wanted to access tape devices and used the block device nodes instead of the character device nodes. Also remove the whole tape documentation since it's completely outdated and we have the device drivers book which is the place where everything is properly documented. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-05-23[S390] cio: fix unreg race in set_online pathSebastian Ott1-2/+3
In ccw_device_set_online we basically start path verification and wait for the device to reach a final state. If it turns out that the device has no useable path we schedule the deregistration of the device (which is still in an non-final state) and wake up the waiting process. The deregistration process will set a final state, but if the wake up happens to be prior to this, the device will hang forever in ccw_device_set_online. To fix this just set the final NOT_OPER state prior to the scheduled deregistration of the device. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-05-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6Linus Torvalds13-349/+341
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1446 commits) macvlan: fix panic if lowerdev in a bond tg3: Add braces around 5906 workaround. tg3: Fix NETIF_F_LOOPBACK error macvlan: remove one synchronize_rcu() call networking: NET_CLS_ROUTE4 depends on INET irda: Fix error propagation in ircomm_lmp_connect_response() irda: Kill set but unused variable 'bytes' in irlan_check_command_param() irda: Kill set but unused variable 'clen' in ircomm_connect_indication() rxrpc: Fix set but unused variable 'usage' in rxrpc_get_transport() be2net: Kill set but unused variable 'req' in lancer_fw_download() irda: Kill set but unused vars 'saddr' and 'daddr' in irlan_provider_connect_indication() atl1c: atl1c_resume() is only used when CONFIG_PM_SLEEP is defined. rxrpc: Fix set but unused variable 'usage' in rxrpc_get_peer(). rxrpc: Kill set but unused variable 'local' in rxrpc_UDP_error_handler() rxrpc: Kill set but unused variable 'sp' in rxrpc_process_connection() rxrpc: Kill set but unused variable 'sp' in rxrpc_rotate_tx_window() pkt_sched: Kill set but unused variable 'protocol' in tc_classify() isdn: capi: Use pr_debug() instead of ifdefs. tg3: Update version to 3.119 tg3: Apply rx_discards fix to 5719/5720 ... Fix up trivial conflicts in arch/x86/Kconfig and net/mac80211/agg-tx.c as per Davem.
2011-05-18qeth: use ndo_set_features callback for initial setup and recoveryFrank Blaschka1-52/+25
This patch uses the ndo_set_features callback during normal device startup or recovery to turn on hardware RX checksum. Patch was done with much help from Michal Miroslaw, thx!!! Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Reviewed-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-18Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds1-1/+0
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: don't delay blk_run_queue_async scsi: remove performance regression due to async queue run blk-throttle: Use task_subsys_state() to determine a task's blkio_cgroup block: rescan partitions on invalidated devices on -ENOMEDIA too cdrom: always check_disk_change() on open block: unexport DISK_EVENT_MEDIA_CHANGE for legacy/fringe drivers
2011-05-13ctcm: get rid of compile warningUrsula Braun2-11/+4
-Wunused-but-set-variable generates compile warnings. The affected variables are removed. 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>
2011-05-13lcs: get rid of compile warningHeiko Carstens1-7/+3
-Wunused-but-set-variable generates a compile warning for lcs' tasklet function. Invoked functions contain already error handling; thus additional return code checking is not needed here. 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>
2011-05-13claw: remove unused return code handlingHeiko Carstens1-19/+3
Remove unused return code handling. The claw driver is mostly dead, so just make sure it keeps compiling without warnings. 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>
2011-05-13qeth: add owner to ccw driverSebastian Ott1-0/+1
Fill in the owner of qeth's ccw device driver. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-13qeth: add OSA concurrent hardware trapFrank Blaschka6-37/+268
This patch improves FFDC (first failure data capture) by requesting a hardware trace in case the device driver, the hardware or a user detects an error. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-13qeth: convert to hw_features part 2Frank Blaschka7-178/+49
Set rx csum default to hw checksumming again. Remove sysfs interface for rx csum (checksumming) and TSO (large_send). With the new hw_features it does not work to keep the old sysfs interface in parallel. Convert options.checksum_type to new hw_features. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-10[S390] dasd: prevent IO error during reserve/release loopStefan Haberland1-1/+10
The termination of running CQR caused by reserve/release operations may lead to an IO error if reserve/release is done in a tight loop. Prevent this by increasing the retry counter after termination. Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-05-10[S390] sclp/memory hotplug: fix initial usecount of incrementsHeiko Carstens1-0/+2
Fix initial usecount of attached and assigned storage increments so they can be set offline. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-05-05net: call dev_alloc_name from register_netdeviceJiri Pirko1-2/+0
Force dev_alloc_name() to be called from register_netdevice() by dev_get_valid_name(). That allows to remove multiple explicit dev_alloc_name() calls. The possibility to call dev_alloc_name in advance remains. This also fixes veth creation regresion caused by 84c49d8c3e4abefb0a41a77b25aa37ebe8d6b743 Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-29[S390] irqstats: fix counting of pfault, dasd diag and virtio irqsHeiko Carstens2-2/+2
pfault, dasd diag and virtio all use the same external interrupt number. The respective interrupt handlers decide by the subcode if they are meant to handle the interrupt. Counting is currently done before looking at the subcode which means each handler counts an interrupt even if it is not handling it. Fix this by moving the kstat code after the code which looks at the subcode. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-04-21block: unexport DISK_EVENT_MEDIA_CHANGE for legacy/fringe driversTejun Heo1-1/+0
In-kernel disk event polling doesn't matter for legacy/fringe drivers and may lead to infinite event loop if ->check_events() implementation generates events on level condition instead of edge. Now that block layer supports suppressing exporting unlisted events, simply leaving disk->events cleared allows these drivers to keep the internal revalidation behavior intact while avoiding weird interactions with userland event handler. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-04-20net: s390: convert to hw_featuresMichał Mirosław3-107/+52
options.large_send was easy to get rid of. options.checksum_type has deeper roots so is left for later cleanup. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-20[S390] dasd: check sense type in device change handlerStefan Weinhuber1-2/+3
When evaluating sense data in dasd_eckd_check_for_device_change, we must always check for the type of sense data in byte 27, bit 0, to make sure that the rest of the sense data is interpreted correctly. Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-04-20[S390] qdio: reset error states immediatelyJan Glauber1-5/+12
The qdio hardware may surpress further interrupts as long as a SBAL is in the error state. That can lead to unnotified data in the SBALs following the error state. To prevent this behaviour change the SBAL[s] in error state immediately to another program owned state so interrupts are again received for further traffic on the device. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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