From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Lars-Peter Clausen <lars@metafoo.de>
Cc: "James E.J. Bottomley" <JBottomley@odin.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Sathya Prakash <sathya.prakash@broadcom.com>,
Chaitra P B <chaitra.basappa@broadcom.com>,
Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com>,
Jitendra Bhivare <jitendra.bhivare@broadcom.com>,
linux-scsi@vger.kernel.org, MPT-FusionLinux.pdl@broadcom.com
Subject: Re: [PATCH resend 2/2] mpt3sas: Remove unnecessary synchronize_irq() before free_irq()
Date: Wed, 09 Mar 2016 20:43:23 -0500 [thread overview]
Message-ID: <yq1vb4vqf9g.fsf@sermon.lab.mkp.net> (raw)
In-Reply-To: <1457086507-5937-2-git-send-email-lars@metafoo.de> (Lars-Peter Clausen's message of "Fri, 4 Mar 2016 11:15:07 +0100")
>>>>> "Lars-Peter" == Lars-Peter Clausen <lars@metafoo.de> writes:
Lars-Peter> Calling synchronize_irq() right before free_irq() is quite
Lars-Peter> useless. On one hand the IRQ can easily fire again before
Lars-Peter> free_irq() is entered, on the other hand free_irq() itself
Lars-Peter> calls synchronize_irq() internally (in a race condition free
Lars-Peter> way), before any state associated with the IRQ is freed.
Applied to 4.6/scsi-queue.
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2016-03-10 1:43 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-04 10:15 [PATCH resend 1/2] be2iscsi: Remove unnecessary synchronize_irq() before free_irq() Lars-Peter Clausen
2016-03-04 10:15 ` [PATCH resend 2/2] mpt3sas: " Lars-Peter Clausen
2016-03-08 2:05 ` Martin K. Petersen
2016-03-09 1:52 ` Martin K. Petersen
2016-03-09 13:26 ` Sreekanth Reddy
2016-03-10 1:43 ` Martin K. Petersen [this message]
2016-03-07 2:29 ` [PATCH resend 1/2] be2iscsi: " Jitendra Bhivare
2016-03-08 2:07 ` Martin K. Petersen
-- strict thread matches above, loose matches on Subject: below --
2016-02-02 20:02 Lars-Peter Clausen
2016-02-02 20:02 ` [PATCH resend 2/2] mpt3sas: " Lars-Peter Clausen
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