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2010-05-26[S390] dasd: unit check handling during internal cio I/OStefan Haberland
React on unit checks during cio internal I/O. Handle as unsolicited interrupt and advice cio to retry. Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-26[S390] cio: unit check handling during internal I/OMichael Ernst
Send unit checks that occur during internal I/O to the device driver and react according to its return code. Signed-off-by: Michael Ernst <mernst@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-26[S390] ccwgroup: add locking around drvdata accessSebastian Ott
Several processes may concurrently try to create a group device from the same ccw_device(s). Add locking arround the drvdata access to prevent race conditions. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-26[S390] cio: remove stschSebastian Ott
Since 8821d24cd261aede9b0436cd3252b17a60ccc33a we no longer use the plain stsch inline function but the one which can handle exceptions. Remove the unused function. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-21sysfs: add struct file* to bin_attr callbacksChris Wright
This allows bin_attr->read,write,mmap callbacks to check file specific data (such as inode owner) as part of any privilege validation. Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-21Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (182 commits) [SCSI] aacraid: add an ifdef'd device delete case instead of taking the device offline [SCSI] aacraid: prohibit access to array container space [SCSI] aacraid: add support for handling ATA pass-through commands. [SCSI] aacraid: expose physical devices for models with newer firmware [SCSI] aacraid: respond automatically to volumes added by config tool [SCSI] fcoe: fix fcoe module ref counting [SCSI] libfcoe: FIP Keep-Alive messages for VPorts are sent with incorrect port_id and wwn [SCSI] libfcoe: Fix incorrect MAC address clearing [SCSI] fcoe: fix a circular locking issue with rtnl and sysfs mutex [SCSI] libfc: Move the port_id into lport [SCSI] fcoe: move link speed checking into its own routine [SCSI] libfc: Remove extra pointer check [SCSI] libfc: Remove unused fc_get_host_port_type [SCSI] fcoe: fixes wrong error exit in fcoe_create [SCSI] libfc: set seq_id for incoming sequence [SCSI] qla2xxx: Updates to ISP82xx support. [SCSI] qla2xxx: Optionally disable target reset. [SCSI] qla2xxx: ensure flash operation and host reset via sg_reset are mutually exclusive [SCSI] qla2xxx: Silence bogus warning by gcc for wrap and did. [SCSI] qla2xxx: T10 DIF support added. ...
2010-05-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1674 commits) qlcnic: adding co maintainer ixgbe: add support for active DA cables ixgbe: dcb, do not tag tc_prio_control frames ixgbe: fix ixgbe_tx_is_paused logic ixgbe: always enable vlan strip/insert when DCB is enabled ixgbe: remove some redundant code in setting FCoE FIP filter ixgbe: fix wrong offset to fc_frame_header in ixgbe_fcoe_ddp ixgbe: fix header len when unsplit packet overflows to data buffer ipv6: Never schedule DAD timer on dead address ipv6: Use POSTDAD state ipv6: Use state_lock to protect ifa state ipv6: Replace inet6_ifaddr->dead with state cxgb4: notify upper drivers if the device is already up when they load cxgb4: keep interrupts available when the ports are brought down cxgb4: fix initial addition of MAC address cnic: Return SPQ credit to bnx2x after ring setup and shutdown. cnic: Convert cnic_local_flags to atomic ops. can: Fix SJA1000 command register writes on SMP systems bridge: fix build for CONFIG_SYSFS disabled ARCNET: Limit com20020 PCI ID matches for SOHARD cards ... Fix up various conflicts with pcmcia tree drivers/net/ {pcmcia/3c589_cs.c, wireless/orinoco/orinoco_cs.c and wireless/orinoco/spectrum_cs.c} and feature removal (Documentation/feature-removal-schedule.txt). Also fix a non-content conflict due to pm_qos_requirement getting renamed in the PM tree (now pm_qos_request) in net/mac80211/scan.c
2010-05-20Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (44 commits) vlynq: make whole Kconfig-menu dependant on architecture add descriptive comment for TIF_MEMDIE task flag declaration. EEPROM: max6875: Header file cleanup EEPROM: 93cx6: Header file cleanup EEPROM: Header file cleanup agp: use NULL instead of 0 when pointer is needed rtc-v3020: make bitfield unsigned PCI: make bitfield unsigned jbd2: use NULL instead of 0 when pointer is needed cciss: fix shadows sparse warning doc: inode uses a mutex instead of a semaphore. uml: i386: Avoid redefinition of NR_syscalls fix "seperate" typos in comments cocbalt_lcdfb: correct sections doc: Change urls for sparse Powerpc: wii: Fix typo in comment i2o: cleanup some exit paths Documentation/: it's -> its where appropriate UML: Fix compiler warning due to missing task_struct declaration UML: add kernel.h include to signal.c ...
2010-05-18Merge branch 'master' of /home/davem/src/GIT/linux-2.6/David S. Miller
Conflicts: include/linux/mod_devicetable.h scripts/mod/file2alias.c
2010-05-18[SCSI] Merge scsi-misc-2.6 into scsi-rc-fixes-2.6James Bottomley
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-05-17qeth: support the new OSA CHPID types OSX and OSMUrsula Braun
The qeth driver is enabled to support the new OSA CHPID types OSX and OSM. 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>
2010-05-17drivers/s390/net: Drop memory allocation castJulia Lawall
Drop cast on the result of kmalloc and similar functions. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ type T; @@ - (T *) (\(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\| kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...)) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-17[S390] drivers/s390/char: Use kmemdupJulia Lawall
Use kmemdup when some other buffer is immediately copied into the allocated region. A simplified version of the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression from,to,size,flag; statement S; @@ - to = \(kmalloc\|kzalloc\)(size,flag); + to = kmemdup(from,size,flag); if (to==NULL || ...) S - memcpy(to, from, size); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-17[S390] drivers/s390/char: Use kstrdupJulia Lawall
Use kstrdup when the goal of an allocation is copy a string into the allocated region. Additionally drop the now unused variable len. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression from,to; expression flag,E1,E2; statement S; @@ - to = kmalloc(strlen(from) + 1,flag); + to = kstrdup(from, flag); ... when != \(from = E1 \| to = E1 \) if (to==NULL || ...) S ... when != \(from = E2 \| to = E2 \) - strcpy(to, from); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-17[S390] qdio: remove API wrappersJan Glauber
Remove qdio API wrappers used by qeth and replace them by calling the appropriate functions directly. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-17[S390] qdio: set correct bit in dsciJan Glauber
The state change indicator is bit 7 not bit 0 of the dsci. Use the correct bit for setting the indicator. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-17[S390] qdio: dont convert timestamps to microsecondsJan Glauber
Don't convert timestamps to microseconds, use timestamps returned by get_clock() directly. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-17[S390] qdio: remove memset hackJan Glauber
Remove memset hack that relied on the layout of struct qdio_q to avoid deletion of the slib pointer. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-17[S390] qdio: prevent starvation on PCI devicesJan Glauber
If adapter interrupts are not available and traditional IO interrupts are used for qdio the inbound tasklet continued to run if new data arrived. That could possibly block other tasklets scheduled on the same CPU. If new data arrives schedule the tasklet again instead of directly processing the new data. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-17[S390] qdio: count number of qdio interruptsJan Glauber
Add missing increment for the qdio interrupt counter. Signed-off-by: Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-17[S390] dasd: remove uid from devmapStefan Haberland
Remove the duplicate of the DASD uid from the devmap structure. Use the uid from the device private structure instead. This also removes a lockdep warning complaining about a possible SOFTIRQ-safe -> SOFTIRQ-unsafe lock order. Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-17[S390] dasd: add dynamic pav tolerationStefan Haberland
For base Parallel Access Volume (PAV) there is a fixed mapping of base and alias devices. With dynamic PAV this mapping can be changed so that an alias device is used with another base device. This patch enables the DASD device driver to tolerate dynamic PAV changes. Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-17[S390] avoid default_llseek in s390 driversMartin Schwidefsky
Use nonseekable_open for a couple of s390 device drivers. This avoids the use of default_llseek function which has a dependency on the BKL. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-17[S390] vmcp: disallow modular buildHeiko Carstens
Change the tristate Kbuild option into a bool option so that the module is either builtin or not available at all. There have been too many cases where people were missing the 'vmcp' device node and unable to send z/VM CP commands. So let's make sure that on distros it will always be present. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-17[S390] idle time accounting vs. machine checksMartin Schwidefsky
A machine check can interrupt the i/o and external interrupt handler anytime. If the machine check occurs while the interrupt handler is waking up from idle vtime_start_cpu can get executed a second time and the int_clock / async_enter_timer values in the lowcore get clobbered. This can confuse the cpu time accounting. To fix this problem two changes are needed. First the machine check handler has to use its own copies of int_clock and async_enter_timer, named mcck_clock and mcck_enter_timer. Second the nested execution of vtime_start_cpu has to be prevented. This is done in s390_idle_check by checking the wait bit in the program status word. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-17[S390] More cleanup for struct _lowcoreMartin Schwidefsky
Remove cpu_id from lowcore and replace addr_t with __u64. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-16qeth: synchronize configuration interfaceFrank Blaschka
Synchronize access to the drivers configuration interface. Also do not allow configuration changes during online/offline transition. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-16qeth: new message if OLM limit is reachedUrsula Braun
z/OS may activate Optimized Latency Mode (OLM) for a connection through an OSA Express3 adapter, which reduces the number of allowed concurrent connections, if adapter is used in shared mode. Create a meaningful message, if activation of an OSA-connection fails due to an active OLM-connection on the shared OSA-adapter. 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>
2010-05-16qeth: exploit HW TX checksummingFrank Blaschka
OSA supports HW TX checksumming in layer 3 mode. Enable this feature and remove software fallback used for TSO. Cleanup checksum bits to indicate OSA can do checksumming only for IPv4 TCP and UDP. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12[S390] dasd: fix race between tasklet and dasd_sleep_onStefan Weinhuber
The various dasd_sleep_on functions use a global wait queue when waiting for a cqr. The wait condition checks the status and devlist fields of the cqr to determine if it is safe to continue. This evaluation may return true, although the tasklet has not finished processing of the cqr and the callback function has not been called yet. When the callback is finally called, the data in the cqr may already be invalid. The sleep_on wait condition needs a safe way to determine if the tasklet has finished processing. Use the callback_data field of the cqr to store a token, which is set by the callback function itself. Cc: <stable@kernel.org> Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-12Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: Documentation/feature-removal-schedule.txt drivers/net/wireless/ath/ar9170/usb.c drivers/scsi/iscsi_tcp.c net/ipv4/ipmr.c
2010-05-02[SCSI] zfcp: Zero memory for gpn_ft and adisc requestsChristof Schmitt
With debug kernels, the memory allocated with kmem_cache_alloc might be initialized with the poison values 6b and a5. Use kmem_cache_zalloc instead of kmem_cache_alloc to get zeroed memory and not send invalid requests. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-05-02[SCSI] zfcp: Use status_read_buf_num provided by FCP channelChristof Schmitt
The FCP channel provides the number of status read buffers to issue. Use the provided number instead of the hardcoded number in zfcp. Reviewed-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-05-02[SCSI] zfcp: Move sbal_get function to zfcp_qdio.cChristof Schmitt
Waiting for a free sbal is a operation on the qdio queue. Move the code implementing the wait to zfcp_qdio.c and rename the functions accordingly. Reviewed-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-05-02[SCSI] zfcp: Move sbale handling to zfcp_qdio filesChristof Schmitt
Move the code accessing the qdio sbales and zfcp_qdio_req struct to the zfcp_qdio files and provide helper functions for accessing the qdio related parts. Reviewed-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-05-02[SCSI] zfcp: Report scatter-gather limits to SCSI and block layerChristof Schmitt
Instead of dealing with large segments in the scatter-gather lists in zfcp_qdio.c, report the limits to the upper layers. With these limits in place, the code for mapping large data blocks to multiple sbales can be removed. Reviewed-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-04-23Merge branch 'master' into for-nextJiri Kosina
2010-04-22Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6Linus Torvalds
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: [S390] zcore: Fix reipl device detection [S390] vdso: use ntp adjusted clock multiplier [S390] cio: use exception-save stsch [S390] add hook to reenable mss after hibernation [S390] cio: allow enable_facility from outside init functions [S390] dasd: fix endless loop in erp
2010-04-22[S390] zcore: Fix reipl device detectionMichael Holzheu
The reipl device information is passed from the kernel to zfcpdump using a pointer in the lowcore (0xe00) that points to the reipl information Currently if that pointer is not zero, we copy the reipl information. If the pointer is not initialized and points outside the accessible memory, it can happen that the memory copy fails. In that case we currently stop the initialization of zcore which leads to a failing kernel dump. The correct behavior is to disable the reipl after dump and continue with zcore intialization. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-04-22[S390] cio: use exception-save stschSebastian Ott
Using stsch on schids with ssid != 0 can lead to an operand exception. Use stsch_err to handle potential exceptions if we fail to reenable mss after hibernation. Cc: <stable@kernel.org> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-04-22[S390] add hook to reenable mss after hibernationSebastian Ott
Reenable multiple subchannel sets after hibernation, prior to the device callbacks. Cc: <stable@kernel.org> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-04-22[S390] cio: allow enable_facility from outside init functionsSebastian Ott
Prepare chsc_enable_facility to be used from outside init functions. Use static memory for the chsc call and protect its access by a spinlock (although there is no concurrent usage). Cc: <stable@kernel.org> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-04-22[S390] dasd: fix endless loop in erpStefan Haberland
If not enough memory is available to build a new erp request it ended up in an endless loop trying to build erp requests. Fixed the loop to proceed the next request instead. Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-04-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: [SCSI] bnx2i: Bug fixes related to MTU change issue when there are active iscsi sessions [SCSI] ibmvscsi: fix DMA API misuse [SCSI] wd7000: fix reset handler typo spin_unlock_irq() => spin_lock_irq() [SCSI] zfcp: Fix tracing of requests with error status [SCSI] zfcp: Update MAINTAINERS entry [SCSI] iscsi_tcp: fix relogin/shutdown hang [SCSI] qla2xxx: fix lock imbalance [SCSI] lpfc: fix lock imbalances [SCSI] be2iscsi: fix lock imbalance [SCSI] dpt_i2o: several use after free issues
2010-04-11Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/stmmac/stmmac_main.c drivers/net/wireless/wl12xx/wl1271_cmd.c drivers/net/wireless/wl12xx/wl1271_main.c drivers/net/wireless/wl12xx/wl1271_spi.c net/core/ethtool.c net/mac80211/scan.c
2010-04-11[SCSI] zfcp: Fix tracing of requests with error statusChristof Schmitt
When a FSF request is returned with an error it should be reported through blktrace for the ziomon tools, but the latency information should not be read. Fix this by also calling zfcp_fsf_req_trace for the error case, but skip reading the latencies inside the function. Reviewed-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-04-11[SCSI] zfcp: Pass return code from fc_block_scsi_eh to scsi ehChristof Schmitt
The return code FAST_IO_FAIL from fc_block_scsi_eh indicates that the pending I/O requests have been terminated as a result of the fast_io_fail_tmo. Pass this return code back to the scsi eh to stop the scsi eh in this case. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-04-09[S390] sclp_async: potential buffer overflowDan Carpenter
"len" hasn't been properly range checked so we shouldn't use it as an array offset. This can only be written to by root but it would still be annoying to accidentally write more than 3 characters and corrupt your memory. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-04-06Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/bonding/bond_main.c drivers/net/via-velocity.c drivers/net/wireless/iwlwifi/iwl-agn.c
2010-04-03net: convert multicast list to list_headJiri Pirko
Converts the list and the core manipulating with it to be the same as uc_list. +uses two functions for adding/removing mc address (normal and "global" variant) instead of a function parameter. +removes dev_mcast.c completely. +exposes netdev_hw_addr_list_* macros along with __hw_addr_* functions for manipulation with lists on a sandbox (used in bonding and 80211 drivers) Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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