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Wed, 20 May 2026 22:01:26 -0700 (PDT) Received: from google.com ([2a00:79e0:2031:6:9e89:7571:583c:e885]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2bd5cfe49c9sm242838115ad.49.2026.05.20.22.01.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 May 2026 22:01:25 -0700 (PDT) Date: Thu, 21 May 2026 14:01:21 +0900 From: Sergey Senozhatsky To: Myrrh Periwinkle Cc: Heikki Krogerus , Greg Kroah-Hartman , Sergey Senozhatsky , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH 1/2] usb: typec: ucsi: Check if power role change actually happened before handling Message-ID: References: <20260519-ucsi-fix-2-v1-0-6f1239535187@qtmlabs.xyz> <20260519-ucsi-fix-2-v1-1-6f1239535187@qtmlabs.xyz> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260519-ucsi-fix-2-v1-1-6f1239535187@qtmlabs.xyz> On (26/05/19 18:41), Myrrh Periwinkle wrote: > The CrOS EC may send a connector status change event with the power > direction changed flag set even if the power direction hasn't actually > changed after initiating a SET_PDR command internally [1]. In practice > this happens on every system suspend due to other changes performed by > the EC [2][3][4], causing suspend to fail. > > Fix this by checking if the power role change actually happened before > handling it. > > [1]: https://source.chromium.org/chromiumos/chromiumos/codesearch/+/main:src/platform/ec/zephyr/subsys/pd_controller/pdc_power_mgmt.c;l=1689;drc=2d5a1cffce4e5ac8a39442cb3b764d2d5e1cf794 > [2]: https://source.chromium.org/chromiumos/chromiumos/codesearch/+/main:src/platform/ec/zephyr/subsys/pd_controller/pdc_power_mgmt.c;l=3923;drc=2d5a1cffce4e5ac8a39442cb3b764d2d5e1cf794 > [3]: https://source.chromium.org/chromiumos/chromiumos/codesearch/+/main:src/platform/ec/zephyr/subsys/pd_controller/pdc_power_mgmt.c;l=5094;drc=2d5a1cffce4e5ac8a39442cb3b764d2d5e1cf794 > [4]: https://source.chromium.org/chromiumos/chromiumos/codesearch/+/main:src/platform/ec/zephyr/subsys/pd_controller/pdc_power_mgmt.c;l=2229;drc=2d5a1cffce4e5ac8a39442cb3b764d2d5e1cf794 > > Cc: stable@vger.kernel.org > Fixes: 7616f006db07 ("usb: typec: ucsi: Update power_supply on power role change") > Signed-off-by: Myrrh Periwinkle Reported-and-tested-by: Sergey Senozhatsky