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SubjectRe: [PATCH v2] can: tcan4x5x: Turn on the power before parsing the config
Date
On 12/10/19 5:32 PM, Dan Murphy wrote:
> The parse config function now performs action on the device either
> reading or writing and a reset. If the regulator is managed it needs
> to be turned on. So turn on the regulator if available if the parsing
> fails then turn off the regulator.

Another BTW:
Consider converting the switching of the vsup to runtime_pm.

Yet another one:
Why do you disable the clocks in the error path of tcan4x5x_can_probe(),
but never enable them?

> out_clk:
> if (!IS_ERR(mcan_class->cclk)) {
> clk_disable_unprepare(mcan_class->cclk);
> clk_disable_unprepare(mcan_class->hclk);
> }

- please move the clock handling from the m_can.c to the individual
driver
- please move the clock handling to runtime_pm in the individual driver
- remove the obsolete m_can_class_get_clocks()
- make runtime_pm mandatory

regards,
Marc

--
Pengutronix e.K. | Marc Kleine-Budde |
Embedded Linux | https://www.pengutronix.de |
Vertretung West/Dortmund | Phone: +49-231-2826-924 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |

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