From: Suzuki K Poulose <suzuki.poulose@arm.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
coresight@lists.linaro.org
Cc: linux-kernel@vger.kernel.org, Mike Leach <mike.leach@linaro.org>,
James Clark <james.clark@arm.com>, Leo Yan <leo.yan@linaro.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] coresight: make coresight_bustype const
Date: Fri, 5 Jan 2024 14:22:43 +0000 [thread overview]
Message-ID: <fc74c447-a15b-4fda-bc36-fa39894946e6@arm.com> (raw)
In-Reply-To: <2024010531-tinfoil-avert-4a57@gregkh>
On 05/01/2024 12:33, Greg Kroah-Hartman wrote:
> Now that the driver core can properly handle constant struct bus_type,
> move the coresight_bustype variable to be a constant structure as well,
> placing it into read-only memory which can not be modified at runtime.
>
> Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
> Cc: Mike Leach <mike.leach@linaro.org>
> Cc: James Clark <james.clark@arm.com>
> Cc: Leo Yan <leo.yan@linaro.org>
> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> Cc: coresight@lists.linaro.org
> Cc: linux-arm-kernel@lists.infradead.org
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> ---
> drivers/hwtracing/coresight/coresight-core.c | 2 +-
> include/linux/coresight.h | 2 +-
> 2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c
> index 9fabe00a40d6..24c49e581737 100644
> --- a/drivers/hwtracing/coresight/coresight-core.c
> +++ b/drivers/hwtracing/coresight/coresight-core.c
> @@ -1796,7 +1796,7 @@ char *coresight_alloc_device_name(struct coresight_dev_list *dict,
> }
> EXPORT_SYMBOL_GPL(coresight_alloc_device_name);
>
> -struct bus_type coresight_bustype = {
> +const struct bus_type coresight_bustype = {
> .name = "coresight",
> };
>
> diff --git a/include/linux/coresight.h b/include/linux/coresight.h
> index a269fffaf991..8fe75a0d7693 100644
> --- a/include/linux/coresight.h
> +++ b/include/linux/coresight.h
> @@ -35,7 +35,7 @@
>
> #define CORESIGHT_UNLOCK 0xc5acce55
>
> -extern struct bus_type coresight_bustype;
> +extern const struct bus_type coresight_bustype;
Thanks, for the patch. I will queue this for v6.8.
Thanks
Suzuki
>
> enum coresight_dev_type {
> CORESIGHT_DEV_TYPE_SINK,
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next prev parent reply other threads:[~2024-01-05 14:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-05 12:33 [PATCH] coresight: make coresight_bustype const Greg Kroah-Hartman
2024-01-05 14:22 ` Suzuki K Poulose [this message]
2024-01-05 14:40 ` Greg Kroah-Hartman
2024-02-12 11:30 ` Suzuki K Poulose
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