From nobody Tue Feb 10 18:36:28 2026 Received: from mail-yb1-f201.google.com (mail-yb1-f201.google.com [209.85.219.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 13C98157484 for ; Wed, 24 Apr 2024 22:32:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713997975; cv=none; b=YVlPO1UbEwKp4axUmLAiIVtCLqyiMAFaKvafFpE0Ykd0+GMBkhTuWck0BFXRS4Ve6e9MDVUqT1vhDxPVLsI5PKujKlMuIDLXpF4etxF/FrtQT39QCCDbC9j3PuoYTbVug6iJz6WdOKfAvWrNctZjGOjem60BiMbFfLmZiHW+2bo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713997975; c=relaxed/simple; bh=W8L5h+SzHiautt9SqcHIuNkveUNPF0/akp2X0XV3TX8=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=drT6eYNvecg35oJfmrannhtos7mFgYgBW71oBBTwD3X957g0rDcBTSRRLI7S2YQ1aS7pj58EnMNFwxI8hJ01Vv885pCx1RcUGj2iWogBHSgc0HrJpHdzGGC95Eb+I6MuBKMi4iqb9LgV0etx78nqtnVeQ44r2f4lgEQfVsn+3lE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--amitsd.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=guZZAZsj; arc=none smtp.client-ip=209.85.219.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--amitsd.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="guZZAZsj" Received: by mail-yb1-f201.google.com with SMTP id 3f1490d57ef6-ddaf165a8d9so700587276.1 for ; Wed, 24 Apr 2024 15:32:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1713997972; x=1714602772; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=1NbcoiaRXrJH9+uu8XHipFnZdxDGtv91eD3q0pnQrtk=; b=guZZAZsjFFEmc9Y70Bii2275K6ywVGJRSZVAa3ZQeOPI4SHensdfdc518JrW5rxiNU 0GmPgzYBuFyDg+mX7wOUSo25inhHowcA173zPpyntnLPJ676zNqk2XLuP2mK0dCk9pMH /OSUkOms7h1fq8iY8lnIkw+O2ZyxeBKi3uwuW9gbu6rGydfqzMV4QoThhr9q0m8/gmKR wBlyOhMfLL6vbDHmvfwmQWLi6plnuT4NeKwcCCGN8oROdYaGVjqFIVf5iPuU/O8jZi3C Sdsp5MFdIqyIuUMHBVzME+BSZRtTmS2lzol3/qn2HJ2giHolLMoPRYHH43RjoGdVYqyX RfMg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1713997972; x=1714602772; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=1NbcoiaRXrJH9+uu8XHipFnZdxDGtv91eD3q0pnQrtk=; b=Lq6sm9Z07I4DFeAvLyezJnMEthofjan4SjaQedggFlLrwmKzPi13Xl50U+X+ITxeOC 2mjSuDakNArj9FGiOc1rbFjYYXD6x8/8Osl0rxkQhuQdpMGyB05XISmc3IwXETzahOyP 7HEhvsoVSIRhS7otj9IC63MhYtndlVXEcsRXkTkbwwKjdT0C8T/jGAizSuA5hId0Aq0N WswyE5DjMYjNn5VUWM3Xzdq1pI9O3ynJnFabX0MKm84JuHePETwUoJ7UbqV56lV+0aRj bDbjYUdv4kdJQYOl1zxkJt0S4LarYcBhzjxHH+5qoBcclkKKpslJXQPuAoiWSliXBvXH Y5vQ== X-Forwarded-Encrypted: i=1; AJvYcCWiNtlURPgAQIXzCl8nHgkn6wb6efGzGyxWuxU+Lwejtiynb1/6tLcjXnA1cDC9fLpco7UON6vBUEtcI9UCZg0KiZ3tRyiIO6YgWfKS X-Gm-Message-State: AOJu0YwxYpmexcHtNJT/fzcuzg7ZVB7XOJqJgFtUY0tt0JqxTfUO5RIJ HCpU4EE5eumPX5tkDbyTaVfN8Ssl2j93th6TC6XMLT3EWNgm9XB08mYxN6qLYyUST7t88XmwC6U Alg== X-Google-Smtp-Source: AGHT+IEgyiK0mF15tmGzPHN/qd3iIL6vfDLxMFx9Q1Dz4XF8BvW7SaW9Nw5e/kMd+OXWdBo6XB2GfwuDVMk= X-Received: from amitsd-gti.c.googlers.com ([fda3:e722:ac3:cc00:20:ed76:c0a8:827]) (user=amitsd job=sendgmr) by 2002:a25:d509:0:b0:de5:5693:4e8e with SMTP id r9-20020a25d509000000b00de556934e8emr371664ybe.11.1713997972127; Wed, 24 Apr 2024 15:32:52 -0700 (PDT) Date: Wed, 24 Apr 2024 15:32:16 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.44.0.769.g3c40516874-goog Message-ID: <20240424223227.1807844-1-amitsd@google.com> Subject: [PATCH v1] usb: typec: tcpm: unregister existing source caps before re-registration From: Amit Sunil Dhamne To: linux@roeck-us.net, heikki.krogerus@linux.intel.com, gregkh@linuxfoundation.org Cc: badhri@google.com, rdbabiera@google.com, Amit Sunil Dhamne , linux-usb@vger.kernel.org, stable@vger.kernel.org, linux-kernel@vger.kernel.org, Mark Brown Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Check and unregister existing source caps in tcpm_register_source_caps function before registering new ones. This change fixes following warning when port partner resends source caps after negotiating PD contract for the purpose of re-negotiation. [ 343.135030][ T151] sysfs: cannot create duplicate filename '/devices/vi= rtual/usb_power_delivery/pd1/source-capabilities' [ 343.135071][ T151] Call trace: [ 343.135076][ T151] dump_backtrace+0xe8/0x108 [ 343.135099][ T151] show_stack+0x18/0x24 [ 343.135106][ T151] dump_stack_lvl+0x50/0x6c [ 343.135119][ T151] dump_stack+0x18/0x24 [ 343.135126][ T151] sysfs_create_dir_ns+0xe0/0x140 [ 343.135137][ T151] kobject_add_internal+0x228/0x424 [ 343.135146][ T151] kobject_add+0x94/0x10c [ 343.135152][ T151] device_add+0x1b0/0x4c0 [ 343.135187][ T151] device_register+0x20/0x34 [ 343.135195][ T151] usb_power_delivery_register_capabilities+0x90/0x20c [ 343.135209][ T151] tcpm_pd_rx_handler+0x9f0/0x15b8 [ 343.135216][ T151] kthread_worker_fn+0x11c/0x260 [ 343.135227][ T151] kthread+0x114/0x1bc [ 343.135235][ T151] ret_from_fork+0x10/0x20 [ 343.135265][ T151] kobject: kobject_add_internal failed for source-capa= bilities with -EEXIST, don't try to register things with the same name in t= he same directory. Fixes: 8203d26905ee ("usb: typec: tcpm: Register USB Power Delivery Capabil= ities") Cc: linux-usb@vger.kernel.org Cc: stable@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Mark Brown Signed-off-by: Amit Sunil Dhamne Reviewed-by: Heikki Krogerus --- drivers/usb/typec/tcpm/tcpm.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index ab6ed6111ed0..d8eb89f4f0c3 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -2996,7 +2996,7 @@ static int tcpm_register_source_caps(struct tcpm_port= *port) { struct usb_power_delivery_desc desc =3D { port->negotiated_rev }; struct usb_power_delivery_capabilities_desc caps =3D { }; - struct usb_power_delivery_capabilities *cap; + struct usb_power_delivery_capabilities *cap =3D port->partner_source_caps; =20 if (!port->partner_pd) port->partner_pd =3D usb_power_delivery_register(NULL, &desc); @@ -3006,6 +3006,9 @@ static int tcpm_register_source_caps(struct tcpm_port= *port) memcpy(caps.pdo, port->source_caps, sizeof(u32) * port->nr_source_caps); caps.role =3D TYPEC_SOURCE; =20 + if (cap) + usb_power_delivery_unregister_capabilities(cap); + cap =3D usb_power_delivery_register_capabilities(port->partner_pd, &caps); if (IS_ERR(cap)) return PTR_ERR(cap); base-commit: 0d31ea587709216d88183fe4ca0c8aba5e0205b8 --=20 2.44.0.769.g3c40516874-goog