Thread (26 messages) 26 messages, 8 authors, 2016-04-11

Re: [PATCH v2 1/8] i2c-mux: add common core data for every mux instance

From: Vladimir Zapolskiy <hidden>
Date: 2016-03-24 14:25:06
Also in: linux-i2c, linux-iio, linux-media, lkml

Hi Peter,

On 24.03.2016 13:05, Peter Rosin wrote:
Hi Vladimir,

On 2016-03-24 10:50, Vladimir Zapolskiy wrote:
quoted
Hi Peter,

On 05.01.2016 17:57, Peter Rosin wrote:
quoted
From: Peter Rosin <redacted>

The initial core mux structure starts off small with only the parent
adapter pointer, which all muxes have, and a priv pointer for mux
driver private data.

Add i2c_mux_alloc function to unify the creation of a mux.

Where appropriate, pass around the mux core structure instead of the
parent adapter or the driver private data.

Remove the parent adapter pointer from the driver private data for all
mux drivers.

Signed-off-by: Peter Rosin <redacted>
is it still under review? If yes, please find one question from me below :)
Yes, the series is still under review/testing, with an update planned in a
week or so.
quoted
[snip]
quoted
@@ -196,21 +195,21 @@ static int i2c_arbitrator_probe(struct platform_device *pdev)
 		dev_err(dev, "Cannot parse i2c-parent\n");
 		return -EINVAL;
 	}
-	arb->parent = of_get_i2c_adapter_by_node(parent_np);
+	muxc->parent = of_find_i2c_adapter_by_node(parent_np);
why do you prefer here to use "unlocked" version of API?

Foe example would it be safe/possible to unload an I2C bus device driver
module or unbind I2C device itself in runtime?
I think you ask why I change from of_get_i2c_... to of_find_i2c_..., and that
change was not intentional. It was the result of a bad merge during an early
rebase.

Does that cover it?
Yep, thank you for clarification, please account this in v3.

I'll try to find some time to review the whole changeset carefully,
in fact I briefly reviewed it two months ago, but I didn't find
anything obviously wrong that time.

--
With best wishes,
Vladimir
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