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Commit 23e60c8d authored by Marco Felsch's avatar Marco Felsch Committed by Greg Kroah-Hartman
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usb: typec: tcpci: clear the fault status bit



According the "USB Type-C Port Controller Interface Specification v2.0"
the TCPC sets the fault status register bit-7
(AllRegistersResetToDefault) once the registers have been reset to
their default values.

This triggers an alert(-irq) on PTN5110 devices albeit we do mask the
fault-irq, which may cause a kernel hang. Fix this generically by writing
a one to the corresponding bit-7.

Cc: stable@vger.kernel.org
Fixes: 74e656d6 ("staging: typec: Type-C Port Controller Interface driver (tcpci)")
Reported-by: default avatar"Angus Ainslie (Purism)" <angus@akkea.ca>
Closes: https://lore.kernel.org/all/20190508002749.14816-2-angus@akkea.ca/


Reported-by: default avatarChristian Bach <christian.bach@scs.ch>
Closes: https://lore.kernel.org/regressions/ZR0P278MB07737E5F1D48632897D51AC3EB329@ZR0P278MB0773.CHEP278.PROD.OUTLOOK.COM/t/


Signed-off-by: default avatarMarco Felsch <m.felsch@pengutronix.de>
Signed-off-by: default avatarFabio Estevam <festevam@denx.de>
Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20230816172502.1155079-1-festevam@gmail.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f2364330
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