[PATCH v8 09/22] counter: Return error code on invalid modes

[David Lechner]

On 2/12/21 6:13 AM, William Breathitt Gray wrote:
> Only a select set of modes (function, action, etc.) are valid for a
> given device configuration. This patch ensures that invalid modes result
> in a return -EINVAL. Such a situation should never occur in reality, but
> it's good to define a default switch cases for the sake of making the
> intent of the code clear.
> 
> Cc: Syed Nayyar Waris <syednwaris at gmail.com>
> Cc: Kamel Bouhara <kamel.bouhara at bootlin.com>
> Cc: Fabrice Gasnier <fabrice.gasnier at st.com>
> Cc: Maxime Coquelin <mcoquelin.stm32 at gmail.com>
> Cc: Alexandre Torgue <alexandre.torgue at st.com>
> Cc: David Lechner <david at lechnology.com>
> Signed-off-by: William Breathitt Gray <vilhelm.gray at gmail.com>
> ---

Reviewed-by: David Lechner <david at lechnology.com>

(In response to Jonathan's comment, I think this is fine rather than
adding more churn to change all of the breaks to returns - but will
keep that in mind for future changes.)