linux-kernel - [RFC PATCH v2 4/7] i2c: demux: WIP: handle the new atomic callbacks

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Date:   Sat,  2 Mar 2019 14:47:32 +0100
From:   Wolfram Sang <wsa+renesas@...g-engineering.com>
To:     linux-i2c@...r.kernel.org
Cc:     linux-renesas-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, Keerthy <j-keerthy@...com>,
        Peter Rosin <peda@...ntia.se>,
        Tony Lindgren <tony@...mide.com>,
        Russell King <linux@...linux.org.uk>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Stefan Lengfeld <contact@...fanchrist.eu>,
        Phil Reid <preid@...ctromag.com.au>,
        Tero Kristo <t-kristo@...com>, linux-omap@...r.kernel.org,
        linux-tegra@...r.kernel.org,
        Wolfram Sang <wsa+renesas@...g-engineering.com>
Subject: [RFC PATCH v2 4/7] i2c: demux: WIP: handle the new atomic callbacks

If the parent has an atomic callback, we need to translate it the same
way as the non-atomic callback.

Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
---
 drivers/i2c/muxes/i2c-demux-pinctrl.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/i2c/muxes/i2c-demux-pinctrl.c b/drivers/i2c/muxes/i2c-demux-pinctrl.c
index 035032e20327..5d00adfbe578 100644
--- a/drivers/i2c/muxes/i2c-demux-pinctrl.c
+++ b/drivers/i2c/muxes/i2c-demux-pinctrl.c
@@ -99,6 +99,9 @@ static int i2c_demux_activate_master(struct i2c_demux_pinctrl_priv *priv, u32 ne
 
 	/* Now fill out current adapter structure. cur_chan must be up to date */
 	priv->algo.master_xfer = i2c_demux_master_xfer;
+	/* FIXME: regular muxes need proper handling, too! */
+	if (adap->algo->master_xfer_atomic)
+		priv->algo.master_xfer_atomic = i2c_demux_master_xfer;
 	priv->algo.functionality = i2c_demux_functionality;
 
 	snprintf(priv->cur_adap.name, sizeof(priv->cur_adap.name),
-- 
2.11.0