5.4-stable review patch. If anyone has any objections, please let me know.
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From: Wolfram Sang wsa+renesas@sang-engineering.com
[ Upstream commit ca89f73394daf92779ddaa37b42956f4953f3941 ]
When misconfigured, the initial setup of the current mux channel can fail, too. It must be checked as well.
Fixes: 50a5ba876908 ("i2c: mux: demux-pinctrl: add driver") Signed-off-by: Wolfram Sang wsa+renesas@sang-engineering.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/i2c/muxes/i2c-demux-pinctrl.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/i2c/muxes/i2c-demux-pinctrl.c b/drivers/i2c/muxes/i2c-demux-pinctrl.c index 45a3f7e7b3f68..cea057704c00c 100644 --- a/drivers/i2c/muxes/i2c-demux-pinctrl.c +++ b/drivers/i2c/muxes/i2c-demux-pinctrl.c @@ -261,7 +261,9 @@ static int i2c_demux_pinctrl_probe(struct platform_device *pdev) pm_runtime_no_callbacks(&pdev->dev);
/* switch to first parent as active master */ - i2c_demux_activate_master(priv, 0); + err = i2c_demux_activate_master(priv, 0); + if (err) + goto err_rollback;
err = device_create_file(&pdev->dev, &dev_attr_available_masters); if (err)