From 9d7859a04a61c9f0095323516baee3c9b86cc1b7 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Tue, 16 Nov 2010 11:33:37 +0000 Subject: [PATCH] ib_srpt: Made sure that accessing sysfs entries during target creation is harmle ss. (Merged r2703 from the trunk.) git-svn-id: http://svn.code.sf.net/p/scst/svn/branches/2.0.0.x@2714 d57e44dd-8a1f-0410-8b47-8ef2f437770f --- srpt/src/ib_srpt.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/srpt/src/ib_srpt.c b/srpt/src/ib_srpt.c index a1431ad0f..46fe4481e 100644 --- a/srpt/src/ib_srpt.c +++ b/srpt/src/ib_srpt.c @@ -2140,6 +2140,9 @@ static int srpt_enable_target(struct scst_tgt *scst_tgt, bool enable) EXTRACHECKS_WARN_ON_ONCE(irqs_disabled()); + if (!sdev) + return -ENOENT; + TRACE_DBG("%s target %s", enable ? "Enabling" : "Disabling", sdev->device->name); @@ -2160,6 +2163,9 @@ static bool srpt_is_target_enabled(struct scst_tgt *scst_tgt) EXTRACHECKS_WARN_ON_ONCE(irqs_disabled()); + if (!sdev) + return false; + spin_lock_irq(&sdev->spinlock); res = sdev->enabled; spin_unlock_irq(&sdev->spinlock);