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Amit Sunil Dhamne f56e75b85b usb: typec: maxim_contaminant: re-enable cc toggle if cc is open and port is clean 
[ Upstream commit a381c6d6f6 ]

Presently in `max_contaminant_is_contaminant()` if there's no
contaminant detected previously, CC is open & stopped toggling and no
contaminant is currently present, TCPC.RC would be programmed to do DRP
toggling. However, it didn't actively look for a connection. This would
lead to Type-C not detect *any* new connections. Hence, in the above
situation, re-enable toggling & program TCPC to look for a new
connection.

Also, return early if TCPC was looking for connection as this indicates
TCPC has neither detected a potential connection nor a change in
contaminant state.

In addition, once dry detection is complete (port is dry), restart
toggling.

Fixes: 02b332a063 ("usb: typec: maxim_contaminant: Implement check_contaminant callback")
Cc: stable <stable@kernel.org>
Signed-off-by: Amit Sunil Dhamne <amitsd@google.com>
Reviewed-by: Badhri Jagan Sridharan <badhri@google.com>
Link: https://lore.kernel.org/r/20250815-fix-upstream-contaminant-v2-2-6c8d6c3adafb@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-08-28 16:28:47 +02:00
arch powerpc/boot: Fix build with gcc 15 2025-08-28 16:28:46 +02:00
block block: reject invalid operation in submit_bio_noacct 2025-08-28 16:28:40 +02:00
certs
crypto
Documentation mptcp: disable add_addr retransmission when timeout is 0 2025-08-28 16:28:44 +02:00
drivers usb: typec: maxim_contaminant: re-enable cc toggle if cc is open and port is clean 2025-08-28 16:28:47 +02:00
fs use uniform permission checks for all mount propagation changes 2025-08-28 16:28:44 +02:00
include compiler: remove __ADDRESSABLE_ASM{_STR,}() again 2025-08-28 16:28:46 +02:00
init
io_uring
ipc
kernel tracing: Limit access to parser->buffer when trace_get_user failed 2025-08-28 16:28:46 +02:00
lib
LICENSES
mm mm/memory-failure: fix infinite UCE for VM_PFNMAP pfn 2025-08-28 16:28:43 +02:00
net tls: fix handling of zero-length records on the rx_list 2025-08-28 16:28:46 +02:00
rust
samples
scripts kconfig: lxdialog: fix 'space' to (de)select options 2025-08-28 16:28:29 +02:00
security
sound ALSA: hda/realtek: Add support for HP EliteBook x360 830 G6 and EliteBook 830 G6 2025-08-28 16:28:43 +02:00
tools selftests: mptcp: pm: check flush doesn't reset limits 2025-08-28 16:28:44 +02:00
usr
virt
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COPYING
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Makefile kbuild: userprogs: use correct linker when mixing clang and GNU ld 2025-08-28 16:28:42 +02:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.