target: Make transport_lookup_cmd_lun() locking IRQ-safe

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transport_lookup_cmd_lun() may be called from interrupt context (eg
tcm_loop_allocate_core_cmd() calls it, and it has a comment that says,
"Can be called from interrupt context"), so it needs to use
spin_lock_irqsave() instead of spin_lock_irq() to avoid enabling
interrupts at the wrong time.

(And indeed the last set of lock operations, on lun_cmd_lock, were
already using spin_lock_irqsave(), so we just need to fix the other
two locks we take)

Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

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Roland Dreier 2011-07-20 09:09:10 +00:00 • committed by Nicholas Bellinger

parent 07bde79a5c

commit 78faae3789

1 changed files with 5 additions and 5 deletions

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drivers/target/target_core_device.c

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