On Tue, Feb 27, 2024 at 09:23:00PM +0530, Mukesh Ojha wrote:
> scm_query_lock is global spin lock and only used for query
> purpose with trustzone and that too for one time to get the
> convention of scm communication. It is possible that, it
> can reused for other purpose.
>
This is not a good principle to follow for something as complex as
locking...
Regards,
Bjorn
> Rename scm_query_lock to scm_lock.
>
> Signed-off-by: Mukesh Ojha <quic_mojha@quicinc.com>
> ---
> drivers/firmware/qcom/qcom_scm.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/firmware/qcom/qcom_scm.c b/drivers/firmware/qcom/qcom_scm.c
> index 520de9b5633a..2d0ba529cf56 100644
> --- a/drivers/firmware/qcom/qcom_scm.c
> +++ b/drivers/firmware/qcom/qcom_scm.c
> @@ -193,7 +193,7 @@ static void qcom_scm_bw_disable(void)
> }
>
> enum qcom_scm_convention qcom_scm_convention = SMC_CONVENTION_UNKNOWN;
> -static DEFINE_SPINLOCK(scm_query_lock);
> +static DEFINE_SPINLOCK(scm_lock);
>
> static enum qcom_scm_convention __get_convention(void)
> {
> @@ -250,14 +250,14 @@ static enum qcom_scm_convention __get_convention(void)
>
> probed_convention = SMC_CONVENTION_LEGACY;
> found:
> - spin_lock_irqsave(&scm_query_lock, flags);
> + spin_lock_irqsave(&scm_lock, flags);
> if (probed_convention != qcom_scm_convention) {
> qcom_scm_convention = probed_convention;
> pr_info("qcom_scm: convention: %s%s\n",
> qcom_scm_convention_names[qcom_scm_convention],
> forced ? " (forced)" : "");
> }
> - spin_unlock_irqrestore(&scm_query_lock, flags);
> + spin_unlock_irqrestore(&scm_lock, flags);
>
> return qcom_scm_convention;
> }
> --
> 2.43.0.254.ga26002b62827
>