From: Balbir Singh <bsingharora@gmail.com>
To: Cyril Bur <cyrilbur@gmail.com>,
linuxppc-dev@lists.ozlabs.org, linux-mtd@lists.infradead.org
Cc: stewart@linux.vnet.ibm.com, alistair@popple.id.au,
dwmw2@infradead.org, rlippert@google.com
Subject: Re: [PATCH v3 03/10] mtd: powernv_flash: Don't treat OPAL_SUCCESS as an error
Date: Mon, 17 Jul 2017 18:50:22 +1000 [thread overview]
Message-ID: <1500281422.8256.5.camel@gmail.com> (raw)
In-Reply-To: <20170712042304.19745-4-cyrilbur@gmail.com>
On Wed, 2017-07-12 at 14:22 +1000, Cyril Bur wrote:
> While this driver expects to interact asynchronously, OPAL is well
> within its rights to return OPAL_SUCCESS to indicate that the operation
> completed without the need for a callback. We shouldn't treat
> OPAL_SUCCESS as an error rather we should wrap up and return promptly to
> the caller.
>
> Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
> ---
> I'll note here that currently no OPAL exists that will return
> OPAL_SUCCESS so there isn't the possibility of a bug today.
It would help if you mentioned OPAL_SUCCESS to the async call. So effectively
what we expected to be an asynchronous call with callback, but OPAL returned
immediately with success.
Balbir Singh.
next prev parent reply other threads:[~2017-07-17 8:51 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-12 4:22 [PATCH v3 00/10] Allow opal-async waiters to get interrupted Cyril Bur
2017-07-12 4:22 ` [PATCH v3 01/10] mtd: powernv_flash: Use WARN_ON_ONCE() rather than BUG_ON() Cyril Bur
2017-07-17 6:19 ` Balbir Singh
2017-07-17 11:33 ` Frans Klaver
2017-07-18 0:27 ` Cyril Bur
2017-07-12 4:22 ` [PATCH v3 02/10] mtd: powernv_flash: Lock around concurrent access to OPAL Cyril Bur
2017-07-17 7:34 ` Balbir Singh
2017-07-17 7:55 ` Cyril Bur
2017-07-17 9:29 ` Balbir Singh
2017-07-18 1:14 ` Cyril Bur
2017-07-18 3:12 ` Michael Ellerman
2017-07-12 4:22 ` [PATCH v3 03/10] mtd: powernv_flash: Don't treat OPAL_SUCCESS as an error Cyril Bur
2017-07-17 8:50 ` Balbir Singh [this message]
2017-07-18 0:42 ` Cyril Bur
2017-07-12 4:22 ` [PATCH v3 04/10] mtd: powernv_flash: Remove pointless goto in driver init Cyril Bur
2017-07-12 4:22 ` [PATCH v3 05/10] powerpc/opal: Make __opal_async_{get, release}_token() static Cyril Bur
2017-07-12 4:23 ` [PATCH v3 06/10] powerpc/opal: Rework the opal-async interface Cyril Bur
2017-07-17 11:30 ` Balbir Singh
2017-07-18 0:40 ` Cyril Bur
2017-07-18 3:20 ` Michael Ellerman
2017-07-12 4:23 ` [PATCH v3 07/10] powernv/opal-sensor: remove not needed lock Cyril Bur
2017-07-12 4:23 ` [PATCH v3 08/10] powerpc/opal: Add opal_async_wait_response_interruptible() to opal-async Cyril Bur
2017-07-12 4:23 ` [PATCH v3 09/10] powerpc/powernv: Add OPAL_BUSY to opal_error_code() Cyril Bur
2017-07-12 4:23 ` [PATCH v3 10/10] mtd: powernv_flash: Use opal_async_wait_response_interruptible() Cyril Bur
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