2024-01-04 23:57:49

by Francesco Dolcini

[permalink] [raw]
Subject: [PATCH] can: m_can: remove redundant check for pm_clock_support

From: Francesco Dolcini <[email protected]>

m_can_clk_start() already skip starting the clock when
clock support is disabled, remove the redundant check in
m_can_class_register().

This also solves the imbalance with m_can_clk_stop() that is called
afterward in the same function before the return.

Signed-off-by: Francesco Dolcini <[email protected]>
---
I spotted the issue while debugging some other part of the code,
the patch is only compile-tested.
---
drivers/net/can/m_can/m_can.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
index 16ecc11c7f62..bd1d1626684d 100644
--- a/drivers/net/can/m_can/m_can.c
+++ b/drivers/net/can/m_can/m_can.c
@@ -2056,11 +2056,9 @@ int m_can_class_register(struct m_can_classdev *cdev)
{
int ret;

- if (cdev->pm_clock_support) {
- ret = m_can_clk_start(cdev);
- if (ret)
- return ret;
- }
+ ret = m_can_clk_start(cdev);
+ if (ret)
+ return ret;

if (cdev->is_peripheral) {
ret = can_rx_offload_add_manual(cdev->net, &cdev->offload,
--
2.39.2



Subject: Re: [PATCH] can: m_can: remove redundant check for pm_clock_support

On Fri, Jan 05, 2024 at 12:57:23AM +0100, Francesco Dolcini wrote:
> From: Francesco Dolcini <[email protected]>
>
> m_can_clk_start() already skip starting the clock when
> clock support is disabled, remove the redundant check in
> m_can_class_register().
>
> This also solves the imbalance with m_can_clk_stop() that is called
> afterward in the same function before the return.
>
> Signed-off-by: Francesco Dolcini <[email protected]>

Reviewed-by: Markus Schneider-Pargmann <[email protected]>

Best,
Markus

> ---
> I spotted the issue while debugging some other part of the code,
> the patch is only compile-tested.
> ---
> drivers/net/can/m_can/m_can.c | 8 +++-----
> 1 file changed, 3 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
> index 16ecc11c7f62..bd1d1626684d 100644
> --- a/drivers/net/can/m_can/m_can.c
> +++ b/drivers/net/can/m_can/m_can.c
> @@ -2056,11 +2056,9 @@ int m_can_class_register(struct m_can_classdev *cdev)
> {
> int ret;
>
> - if (cdev->pm_clock_support) {
> - ret = m_can_clk_start(cdev);
> - if (ret)
> - return ret;
> - }
> + ret = m_can_clk_start(cdev);
> + if (ret)
> + return ret;
>
> if (cdev->is_peripheral) {
> ret = can_rx_offload_add_manual(cdev->net, &cdev->offload,
> --
> 2.39.2
>

2024-02-16 07:46:00

by Francesco Dolcini

[permalink] [raw]
Subject: Re: [PATCH] can: m_can: remove redundant check for pm_clock_support

Hello Marc and Vincent,

On Fri, Jan 05, 2024 at 12:57:23AM +0100, Francesco Dolcini wrote:
> From: Francesco Dolcini <[email protected]>
>
> m_can_clk_start() already skip starting the clock when
> clock support is disabled, remove the redundant check in
> m_can_class_register().
>
> This also solves the imbalance with m_can_clk_stop() that is called
> afterward in the same function before the return.
>
> Signed-off-by: Francesco Dolcini <[email protected]>

Did you missed this? Or do you have some concern with it?

Francesco



2024-02-16 07:57:28

by Marc Kleine-Budde

[permalink] [raw]
Subject: Re: [PATCH] can: m_can: remove redundant check for pm_clock_support

On 16.02.2024 08:45:27, Francesco Dolcini wrote:
> Hello Marc and Vincent,
>
> On Fri, Jan 05, 2024 at 12:57:23AM +0100, Francesco Dolcini wrote:
> > From: Francesco Dolcini <[email protected]>
> >
> > m_can_clk_start() already skip starting the clock when
> > clock support is disabled, remove the redundant check in
> > m_can_class_register().
> >
> > This also solves the imbalance with m_can_clk_stop() that is called
> > afterward in the same function before the return.
> >
> > Signed-off-by: Francesco Dolcini <[email protected]>
>
> Did you missed this? Or do you have some concern with it?

Somehow missed it in the last PR, but already part of the next PR.

regards,
Marc

--
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