From: Sudeep Holla <sudeep.holla@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: Cristian Marussi <cristian.marussi@arm.com>,
Kevin Hilman <khilman@baylibre.com>,
Neil Armstrong <narmstrong@baylibre.com>,
Jerome Brunet <jbrunet@baylibre.com>,
Florian Fainelli <f.fainelli@gmail.com>,
Jim Quinlan <jim2101024@gmail.com>,
Etienne Carriere <etienne.carriere@linaro.org>
Subject: Re: [PATCH 2/2] firmware: arm_scmi: Add compatibility checks for shmem node
Date: Wed, 2 Jun 2021 08:29:07 +0100 [thread overview]
Message-ID: <20210602072844.rnjytsa32puj5kon@bogus> (raw)
In-Reply-To: <20210601225125.918225-2-sudeep.holla@arm.com>
On Tue, Jun 01, 2021 at 11:51:25PM +0100, Sudeep Holla wrote:
> The shared memory node used for communication between the firmware and
> the OS should be compatible with "arm,scmi-shmem". Add the check for the
> same while parsing the node before fetching the memory regions.
>
Ignore this patch, sent a wrong version. This breaks build...
> Cc: Cristian Marussi <cristian.marussi@arm.com>
> Cc: Florian Fainelli <f.fainelli@gmail.com>
> Cc: Jim Quinlan <jim2101024@gmail.com>
> Cc: Etienne Carriere <etienne.carriere@linaro.org>
> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
> ---
> drivers/firmware/arm_scmi/mailbox.c | 3 +++
> drivers/firmware/arm_scmi/smc.c | 3 +++
> 2 files changed, 6 insertions(+)
>
> diff --git a/drivers/firmware/arm_scmi/mailbox.c b/drivers/firmware/arm_scmi/mailbox.c
> index 4626404be541..e3dcb58314ae 100644
> --- a/drivers/firmware/arm_scmi/mailbox.c
> +++ b/drivers/firmware/arm_scmi/mailbox.c
> @@ -69,6 +69,9 @@ static int mailbox_chan_setup(struct scmi_chan_info *cinfo, struct device *dev,
> return -ENOMEM;
>
> shmem = of_parse_phandle(cdev->of_node, "shmem", idx);
> + if (!of_device_is_compatible(shmem, "arm,scmi-shmem"))
> + return -ENXIO;
> +
> ret = of_address_to_resource(shmem, 0, &res);
> of_node_put(shmem);
> if (ret) {
> diff --git a/drivers/firmware/arm_scmi/smc.c b/drivers/firmware/arm_scmi/smc.c
> index fcbe2677f84b..78198ef94438 100644
> --- a/drivers/firmware/arm_scmi/smc.c
> +++ b/drivers/firmware/arm_scmi/smc.c
> @@ -76,6 +76,9 @@ static int smc_chan_setup(struct scmi_chan_info *cinfo, struct device *dev,
> return -ENOMEM;
>
> np = of_parse_phandle(cdev->of_node, "shmem", 0);
> + if (!of_device_is_compatible(shmem, "arm,scmi-shmem"))
s/shmem/np/
> + return -ENXIO;
> +
> ret = of_address_to_resource(np, 0, &res);
> of_node_put(np);
> if (ret) {
> --
> 2.25.1
>
--
Regards,
Sudeep
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next prev parent reply other threads:[~2021-06-02 8:09 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-01 22:51 [PATCH 1/2] firmware: arm_scpi: Add compatibility checks for shmem node Sudeep Holla
2021-06-01 22:51 ` [PATCH 2/2] firmware: arm_scmi: " Sudeep Holla
2021-06-02 7:29 ` Sudeep Holla [this message]
2021-06-02 7:33 ` Etienne Carriere
2021-06-02 7:36 ` Sudeep Holla
2021-06-02 7:44 ` Etienne Carriere
2021-06-02 7:53 ` Sudeep Holla
2021-06-03 17:18 ` Florian Fainelli
2021-06-03 17:20 ` Florian Fainelli
2021-06-03 17:45 ` Sudeep Holla
2021-06-03 17:42 ` Sudeep Holla
2021-06-03 18:19 ` Etienne Carriere
2021-06-04 9:13 ` Sudeep Holla
2021-06-02 7:27 ` [PATCH 1/2] firmware: arm_scpi: " Sudeep Holla
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