scsi: mpt3sas: Avoid sleeping in interrupt context
Commit 669f044170
("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>
Esse commit está contido em:

commit de
Martin K. Petersen

pai
c46f09175d
commit
8893cf6cb1
@@ -2859,7 +2859,7 @@ _scsih_internal_device_block(struct scsi_device *sdev,
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sas_device_priv_data->sas_target->handle);
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sas_device_priv_data->block = 1;
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r = scsi_internal_device_block(sdev);
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r = scsi_internal_device_block(sdev, false);
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if (r == -EINVAL)
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sdev_printk(KERN_WARNING, sdev,
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"device_block failed with return(%d) for handle(0x%04x)\n",
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@@ -2895,7 +2895,7 @@ _scsih_internal_device_unblock(struct scsi_device *sdev,
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"performing a block followed by an unblock\n",
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r, sas_device_priv_data->sas_target->handle);
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sas_device_priv_data->block = 1;
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r = scsi_internal_device_block(sdev);
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r = scsi_internal_device_block(sdev, false);
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if (r)
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sdev_printk(KERN_WARNING, sdev, "retried device_block "
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"failed with return(%d) for handle(0x%04x)\n",
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