RE: [PATCH] i2c: tegra: Wait for config load atomically while in ISR

[David Laight]

From: Mikko Perttunen
> Sent: 11 January 2021 13:56
> 
> Upon a communication error, the interrupt handler can call
> tegra_i2c_disable_packet_mode. This causes a sleeping poll to happen
> unless the current transaction was marked atomic. Since
> tegra_i2c_disable_packet_mode is only called from the interrupt path,
> make it use atomic waiting always.

Spin-waiting in an ISR for anything that it makes sense to do
a sleep-wait for at other times is badly broken design.

	David

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