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authorBart Van Assche <bart.vanassche@sandisk.com>2017-03-01 09:00:36 -0800
committerMartin K. Petersen <martin.petersen@oracle.com>2017-03-01 21:52:13 -0500
commit8893cf6cb1cf56334c05120e23092dbfc9423ebb (patch)
treea1712cd5ce7950e929c1d4cb0fc21a690915ef10 /kernel/rcu/rcutorture.c
parentc46f09175dabd5dd6a1507f36250bfa734a0156e (diff)
downloadlinux-8893cf6cb1cf56334c05120e23092dbfc9423ebb.tar.bz2
scsi: mpt3sas: Avoid sleeping in interrupt context
Commit 669f044170d8 ("scsi: srp_transport: Move queuecommand() wait code to SCSI core") can make scsi_internal_device_block() sleep. However, the mpt3sas driver can call this function from an interrupt handler. Hence add a second argument to scsi_internal_device_block() that restores the old behavior of this function for the mpt3sas handler. The call chain that triggered an "IRQ handler enabled interrupts" complaint is as follows: _base_interrupt() -> _base_async_event() -> mpt3sas_scsih_event_callback() -> _scsih_check_topo_delete_events() -> _scsih_block_io_to_children_attached_directly() -> _scsih_block_io_device() -> _scsih_internal_device_block() -> scsi_internal_device_block() Reported-by: Omar Sandoval <osandov@osandov.com> Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Omar Sandoval <osandov@osandov.com> Cc: Hannes Reinecke <hare@suse.com> Cc: Sagi Grimberg <sagi@grimberg.me> Cc: Christoph Hellwig <hch@lst.de> Cc: Sathya Prakash <sathya.prakash@broadcom.com> Cc: Chaitra P B <chaitra.basappa@broadcom.com> Cc: Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com> Cc: Sreekanth Reddy <Sreekanth.Reddy@broadcom.com> Cc: <stable@vger.kernel.org> # v4.10+ Tested-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'kernel/rcu/rcutorture.c')
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