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i2c: mv64xxx: Remove shutdown method from driver

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When I attempt to shut down (or reboot) my R8 based NTC CHIP with this
i2c driver I get the following error: "i2c i2c-0: mv64xxx: I2C bus
locked, block: 1, time_left: 0". Reboots are successful but shutdowns
freeze. If I comment out the shutdown routine the device both reboots
and shuts down successfully without receiving this error (however it
does receive a warning of missing atomic_xfer).

It appears that very few i2c drivers have a shutdown method, I assume
because these devices are often used to communicate with PMICs (such
as in my case with the R8 based NTC CHIP). I'm proposing we simply
remove this method so long as it doesn't cause trouble for others
downstream. I'll work on an atomic_xfer method and submit that in
a different patch.

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
This commit is contained in:
Chris Morgan 2022-03-25 13:06:25 -05:00 committed by Wolfram Sang
parent e749e4fc90
commit 09b343038e
1 changed files with 0 additions and 9 deletions
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9
drivers/i2c/busses/i2c-mv64xxx.c
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@ -1047,14 +1047,6 @@ mv64xxx_i2c_remove(struct platform_device *pd)
return 0;
}
static void
mv64xxx_i2c_shutdown(struct platform_device *pd)
{
pm_runtime_disable(&pd->dev);
if (!pm_runtime_status_suspended(&pd->dev))
mv64xxx_i2c_runtime_suspend(&pd->dev);
}
static const struct dev_pm_ops mv64xxx_i2c_pm_ops = {
SET_RUNTIME_PM_OPS(mv64xxx_i2c_runtime_suspend,
mv64xxx_i2c_runtime_resume, NULL)
@ -1065,7 +1057,6 @@ static const struct dev_pm_ops mv64xxx_i2c_pm_ops = {
static struct platform_driver mv64xxx_i2c_driver = {
.probe = mv64xxx_i2c_probe,
.remove = mv64xxx_i2c_remove,
.shutdown = mv64xxx_i2c_shutdown,
.driver = {
.name = MV64XXX_I2C_CTLR_NAME,
.pm = &mv64xxx_i2c_pm_ops,