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[34.32.220.208]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6914f3b583bsm6853113a12.29.2026.06.11.05.22.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Jun 2026 05:22:01 -0700 (PDT) From: Andrei Kuchynski To: Heikki Krogerus Cc: Greg Kroah-Hartman , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Andrei Kuchynski Subject: [PATCH v1 2/3] usb: typec: thunderbolt: Check cable altmode support Date: Thu, 11 Jun 2026 12:21:45 +0000 Message-ID: <20260611122146.262184-3-akuchynski@chromium.org> X-Mailer: git-send-email 2.54.0.1099.g489fc7bff1-goog In-Reply-To: <20260611122146.262184-1-akuchynski@chromium.org> References: <20260611122146.262184-1-akuchynski@chromium.org> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Update the probe function to utilize the new typec_cable_altmode_unsupported() helper. If the cable doesn't support Thunderbolt altmode, don't initialize altmode_ops and prevent altmode from being activated. Signed-off-by: Andrei Kuchynski --- drivers/usb/typec/altmodes/thunderbolt.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/typec/altmodes/thunderbolt.c b/drivers/usb/typec/altmodes/thunderbolt.c index 32250b94262a9..2eccdddf1b1f4 100644 --- a/drivers/usb/typec/altmodes/thunderbolt.c +++ b/drivers/usb/typec/altmodes/thunderbolt.c @@ -284,6 +284,10 @@ static int tbt_altmode_probe(struct typec_altmode *alt) alt->desc = "Thunderbolt3"; typec_altmode_set_drvdata(alt, tbt); + + if (typec_cable_altmode_unsupported(alt)) + return 0; + typec_altmode_set_ops(alt, &tbt_altmode_ops); if (!alt->mode_selection && tbt_ready(alt)) { -- 2.54.0.1099.g489fc7bff1-goog