From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com>
Cc: Bjorn Helgaas <helgaas@kernel.org>,
Lukas Wunner <lukas@wunner.de>,
linux-scsi <linux-scsi@vger.kernel.org>,
linux-pci@vger.kernel.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
ruscur@russell.cc, sbobroff@linux.ibm.com,
Oliver <oohall@gmail.com>,
Sathya Prakash <Sathya.Prakash@broadcom.com>,
Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Subject: Re: [v5 2/4] mpt3sas: Fix Sync cache command failure during driver unload
Date: Thu, 18 Oct 2018 10:23:18 +0300 [thread overview]
Message-ID: <CAHp75VfENTJjJVMyQ1wnD4GXYKjhgr6h+wocPOfk16p9nWrpeg@mail.gmail.com> (raw)
In-Reply-To: <CA+RiK67067aV9Ky5m8uCGLGcvjbBRxqFVeyB0CsYcvSw7rgqJg@mail.gmail.com>
On Thu, Oct 18, 2018 at 10:11 AM Suganath Prabu Subramani
<suganath-prabu.subramani@broadcom.com> wrote:
>
>
>
> On Wed, Oct 17, 2018 at 2:02 PM Andy Shevchenko <andy.shevchenko@gmail.com> wrote:
>>
>> On Wed, Oct 17, 2018 at 8:59 AM Suganath Prabu
>> <suganath-prabu.subramani@broadcom.com> wrote:
>> >
>> > This is to fix Sync cache and start stop command
>> > failures with DID_NO_CONNECT during driver unload.
>> >
>> > 1) Release drives first from SML, then remove internally
>> > in driver.
>> > 2) And allow sync cache and Start stop commands to firmware,
>> > even when remove_host flag is set.
>>
>> > + if (ioc->hba_mpi_version_belonged == MPI2_VERSION) {
>> > + if (ioc->remove_host)
>> > + return false;
>> > +
>> > + return true;
>> > + }
>> > +
>> > + if (ioc->remove_host) {
>> > +
>> > + switch (scmd->cmnd[0]) {
>> > + case SYNCHRONIZE_CACHE:
>> > + case START_STOP:
>> > + return true;
>> > + default:
>> > + return false;
>> > + }
>> > + }
>> > +
>> > + return true;
>>
>> Wouldn't be the same as
>> Yes it is same, but i feel original code is more readable.
OK (I didn't compare assembly, but I assume this is slow path).
>> if (!ioc->remove_host || ioc->hba_mpi_version_belonged == MPI2_VERSION)
>> return !ioc->remove_host;
>>
>> switch (scmd->cmnd[0]) {
>> case SYNCHRONIZE_CACHE:
>> case START_STOP:
>> return true;
>> default:
>> return false;
>> }
>>
>> ?
>>
>> --
>> With Best Regards,
>> Andy Shevchenko
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2018-10-18 7:23 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-17 5:59 [v5 0/4] mpt3sas: Hot-Plug Surprise removal support on IOC Suganath Prabu
2018-10-17 5:59 ` [v5 1/4] mpt3sas: Separate out mpt3sas_wait_for_ioc_to_operational Suganath Prabu
2018-10-17 8:17 ` Andy Shevchenko
2018-10-17 8:19 ` Andy Shevchenko
[not found] ` <CA+RiK66_gpLvzFyztdQ3BdX11wn2uRfxoF6hhRg1TXoERe7z3Q@mail.gmail.com>
2018-10-18 7:22 ` Andy Shevchenko
2018-10-17 5:59 ` [v5 2/4] mpt3sas: Fix Sync cache command failure during driver unload Suganath Prabu
2018-10-17 8:32 ` Andy Shevchenko
[not found] ` <CA+RiK67067aV9Ky5m8uCGLGcvjbBRxqFVeyB0CsYcvSw7rgqJg@mail.gmail.com>
2018-10-18 7:23 ` Andy Shevchenko [this message]
2018-10-17 5:59 ` [v5 3/4] mpt3sas:Fix driver modifying persistent data Suganath Prabu
2018-10-17 8:24 ` Andy Shevchenko
2018-10-18 7:16 ` Suganath Prabu Subramani
2018-10-17 5:59 ` [v5 4/4] mpt3sas: Bump driver version to 27.100.00.00 Suganath Prabu
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