From: Peter Hilber <peter.hilber@opensynergy.com>
To: Cristian Marussi <cristian.marussi@arm.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
virtualization@lists.linux-foundation.org,
virtio-dev@lists.oasis-open.org
Cc: sudeep.holla@arm.com, james.quinlan@broadcom.com,
Jonathan.Cameron@Huawei.com, f.fainelli@gmail.com,
etienne.carriere@linaro.org, vincent.guittot@linaro.org,
souvik.chakravarty@arm.com, igor.skalkin@opensynergy.com,
alex.bennee@linaro.org, jean-philippe@linaro.org,
mikhail.golubev@opensynergy.com, anton.yakovlev@opensynergy.com,
Vasyl.Vavrychuk@opensynergy.com,
Andriy.Tryshnivskyy@opensynergy.com
Subject: Re: [PATCH v4 01/16] firmware: arm_scmi: Fix max pending messages boundary check
Date: Thu, 1 Jul 2021 10:42:40 +0200 [thread overview]
Message-ID: <cb24778e-60fd-4582-c855-238d71319067@opensynergy.com> (raw)
In-Reply-To: <20210611165937.701-2-cristian.marussi@arm.com>
Hi Cristian,
please find some remarks to the patch series in this email and the
following.
On 11.06.21 18:59, Cristian Marussi wrote:
> SCMI message headers carry a sequence number and such field is sized to
> allow for MSG_TOKEN_MAX distinct numbers; moreover zero is not really an
> acceptable maximum number of pending in-flight messages.
>
> Fix accordignly the checks performed on the value exported by transports
> in scmi_desc.max_msg.
>
> Reported-by: Vincent Guittot <vincent.guittot@linaro.org>
> Fixes: aa4f886f3893 ("firmware: arm_scmi: add basic driver infrastructure for SCMI")
> Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
> ---
> drivers/firmware/arm_scmi/driver.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
> index 66e5e694be7d..6713b259f1e6 100644
> --- a/drivers/firmware/arm_scmi/driver.c
> +++ b/drivers/firmware/arm_scmi/driver.c
> @@ -1025,8 +1025,9 @@ static int __scmi_xfer_info_init(struct scmi_info *sinfo,
> const struct scmi_desc *desc = sinfo->desc;
>
> /* Pre-allocated messages, no more than what hdr.seq can support */
> - if (WARN_ON(desc->max_msg >= MSG_TOKEN_MAX)) {
> - dev_err(dev, "Maximum message of %d exceeds supported %ld\n",
> + if (WARN_ON(!desc->max_msg || desc->max_msg > MSG_TOKEN_MAX)) {
> + dev_err(dev,
> + "Invalid max_msg %d. Maximum messages supported %ld.\n",
%ld -> %lu
> desc->max_msg, MSG_TOKEN_MAX);
> return -EINVAL;
> }
>
next prev parent reply other threads:[~2021-07-01 8:42 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-11 16:59 [PATCH v4 00/16] Introduce SCMI VirtIO transport Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 01/16] firmware: arm_scmi: Fix max pending messages boundary check Cristian Marussi
2021-07-01 8:42 ` Peter Hilber [this message]
2021-07-01 10:04 ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 02/16] firmware: arm_scmi: Add support for type handling in common functions Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 03/16] firmware: arm_scmi: Add transport optional init/exit support Cristian Marussi
2021-06-14 13:29 ` Jonathan Cameron
2021-06-16 9:04 ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 04/16] firmware: arm_scmi: Introduce monotonically increasing tokens Cristian Marussi
2021-06-14 13:53 ` Jonathan Cameron
2021-06-16 9:11 ` Cristian Marussi
2021-07-01 8:42 ` Peter Hilber
2021-07-01 10:16 ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 05/16] firmware: arm_scmi: Introduce delegated xfers support Cristian Marussi
2021-07-01 8:42 ` Peter Hilber
2021-07-01 10:24 ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 06/16] firmware: arm_scmi, smccc, mailbox: Make shmem based transports optional Cristian Marussi
2021-07-01 8:42 ` Peter Hilber
2021-07-01 10:27 ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 07/16] firmware: arm_scmi: Add op to override max message # Cristian Marussi
2021-06-14 14:04 ` Jonathan Cameron
2021-06-16 9:13 ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 08/16] [RFC][REWORK] " Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 09/16] firmware: arm_scmi: Add optional link_supplier() transport op Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 10/16] firmware: arm_scmi: Add per-device transport private info Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 11/16] firmware: arm_scmi: Add is_scmi_protocol_device() Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 12/16] firmware: arm_scmi: Add message passing abstractions for transports Cristian Marussi
2021-06-14 14:10 ` Jonathan Cameron
2021-06-16 9:14 ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 13/16] dt-bindings: arm: Add virtio transport for SCMI Cristian Marussi
2021-06-24 19:22 ` Rob Herring
2021-07-01 8:43 ` Peter Hilber
2021-07-01 10:31 ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 14/16] firmware: arm_scmi: Add virtio transport Cristian Marussi
2021-06-14 14:23 ` Jonathan Cameron
2021-06-16 10:18 ` Cristian Marussi
2021-07-01 8:43 ` Peter Hilber
2021-07-01 10:34 ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 15/16] [RFC][REWORK] firmware: arm_scmi: make virtio-scmi use delegated xfers Cristian Marussi
2021-07-01 8:43 ` Peter Hilber
2021-07-01 11:26 ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 16/16] firmware: arm_scmi: Add polling mode to virtio transport Cristian Marussi
2021-06-14 11:43 ` [PATCH v4 00/16] Introduce SCMI VirtIO transport Christoph Hellwig
2021-06-14 14:03 ` Cristian Marussi
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