From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ej1-f52.google.com (mail-ej1-f52.google.com [209.85.218.52]) (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 CC77F2727E5 for ; Mon, 29 Sep 2025 09:02:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.52 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759136536; cv=none; b=DrQ7d+vF3tMA01zxt7PmFe8OOXvNKt3+bo5Tu3aJrqiBDBdq9yRimKg+s8LV6XqLFHatHF9XAbskiOmEZJTjqfyVhx1gNfTXevDwcjYhPgu7aZgK1L1/EGYKkvCqeRTMlXZ3vQLca4LccZpGbIWotq121TjCnDehVmi84iQqPWg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759136536; c=relaxed/simple; bh=Iz2BWCdSgdVFT+ZSV5FEnQ1mDouLiwwzq0NW5tWky2Q=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=K1ok28+4iG4702L8rQNE4yGFxgjHCbmaqOcaVUrmAZxVYNy8r3o4IOpjuc6WjziMvWMofC8oWaoDwk6G0DKFKOH1YD5F/dUjr9PWgOKrGyAHPdg2v2yUHJlBSY8ALOKFAIebm8PadJEkt1ezT0q035WVwE4mLwfXnI7V21SlN3U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org; spf=pass smtp.mailfrom=chromium.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b=TJzSauxc; arc=none smtp.client-ip=209.85.218.52 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=chromium.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="TJzSauxc" Received: by mail-ej1-f52.google.com with SMTP id a640c23a62f3a-b07e3a77b72so894151766b.0 for ; Mon, 29 Sep 2025 02:02:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1759136533; x=1759741333; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=OYo9Bvf48RUNwotXaFzXexOnDcIhbuguQx24asL2zgM=; b=TJzSauxcl8jvGAr9661BWW1jg4e1dbRUctIWX0Bf8TO8C1zxYRDJWjn/JuEqW0pCO3 aGKAyyVo9kqgqVOSYFGLtY38Nurg40c6+PWQzYjIMA3pZntYfO3HMQnPEs4SuD8EshqC 4HFt+nbIR6/fpF8oYGqVKgYCHe0Xg+3X+DaVQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1759136533; x=1759741333; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=OYo9Bvf48RUNwotXaFzXexOnDcIhbuguQx24asL2zgM=; b=lPHkr6t+pRgk+/n7I+O/bEjhyrNv/+m0NNpIh4/RNsVESJ6w616YNtJD+HIaskChAe zd9CjcqpruTvkeWC/Rkoe898amztWLR/XRk6yBVjQqNFTx1EKT0d8JWan4SX1Ea8xU2A +34kpv7dNNP5ZQ8uJZcLNOy/IpTlzTIZvDhV0p1jq9tBcv/l5bTBmr5yKHCRXOfEkrer tZuVHG+JOh8DXzPM8yghhthRAvtIENQmf5n2FXnu0aCoGusFQ92+IRb9OafZxZmP7nYV +TmSB99rvO0TDLsvxCwZkV27eU2IELLp4EJ2dvuoqvwBjk25+JKXLQjP0eL44BzmsAQ8 7b9Q== X-Gm-Message-State: AOJu0Yxp8aevYWhunG15BP2OMfAxkcKKG1/XrohslQjADhqwNVCVt86m S9G5TLhBHD0XSfbYEGryO5fOWpNBUiSW1n64AA8G41X1reNDt0LQUNLktP0U6D5rSiyyv4mfoiW O1Oj/T+U= X-Gm-Gg: ASbGncsk+34/XEWjkrtLIN8R0R/SDEkgK3/fSzc0r8bo0YHbD3eQBPNMqoPON3QCUZQ Fim9rwRHS+NAfRRpS8W0PNwcrpvXCtTJBX+pyf4fE6CY01/lslvQ9MpuqTauP9tJuzoXn0xs7XW QnZScRa4LJYJfTCFrK5etVtb5SBAYljjpznqSGye+z2+ZAde/VCCSj8FqA/eS+Otim10of0ih84 MwsL3GzDENrPiHAhbX/E4my/Y6jLpFZ4zVyeKs1BLejpKM6vKJ741vtqwSUuDkVGHa9tjYhlbZY b0Y/G4YGTQizy0uW6NEw7qbknx0mn/j6NnAiGNRrsca1Bt1RIefDCW998tYZ7vQUJET1AeUsR5E ruNTGLItXp/ntv8djuNYDw6B3W9jXkaF4aNrqCRwl6uxj7LOr9s9nFYdEXXlkWNTz7vt+9KkoO5 iq4+4MsbmeYoI= X-Google-Smtp-Source: AGHT+IEYogRq6m/Zejt+rxTWrEOotQlBAFsCgf0n3rTC71Rr43/exUYFn+UnL1D42uu65FVAf2v7oA== X-Received: by 2002:a17:907:6d1e:b0:b23:20e7:b480 with SMTP id a640c23a62f3a-b354bb6475emr1625045066b.18.1759136533104; Mon, 29 Sep 2025 02:02:13 -0700 (PDT) Received: from januszek.c.googlers.com.com (25.254.32.34.bc.googleusercontent.com. [34.32.254.25]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b3545a98d7fsm880017666b.100.2025.09.29.02.02.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 29 Sep 2025 02:02:12 -0700 (PDT) From: "=?UTF-8?q?=C5=81ukasz=20Bartosik?=" X-Google-Original-From: =?UTF-8?q?=C5=81ukasz=20Bartosik?= To: Mathias Nyman , Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, =?UTF-8?q?=C5=81ukasz=20Bartosik?= Subject: [PATCH v1 4/4] xhci: dbc: allow to set manufacturer name through sysfs Date: Mon, 29 Sep 2025 09:02:06 +0000 Message-ID: <20250929090206.423937-5-ukaszb@google.com> X-Mailer: git-send-email 2.51.0.536.g15c5d4f767-goog In-Reply-To: <20250929090206.423937-1-ukaszb@google.com> References: <20250929090206.423937-1-ukaszb@google.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Łukasz Bartosik Add code which allows to set manufacturer name of a DbC device through sysfs. Signed-off-by: Łukasz Bartosik --- drivers/usb/host/xhci-dbgcap.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/drivers/usb/host/xhci-dbgcap.c b/drivers/usb/host/xhci-dbgcap.c index 31fa3c7c63e4..b52735c1474a 100644 --- a/drivers/usb/host/xhci-dbgcap.c +++ b/drivers/usb/host/xhci-dbgcap.c @@ -1200,6 +1200,35 @@ static ssize_t dbc_bcdDevice_store(struct device *dev, return size; } +static ssize_t dbc_iManufacturer_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct xhci_hcd *xhci = hcd_to_xhci(dev_get_drvdata(dev)); + struct xhci_dbc *dbc = xhci->dbc; + + return sysfs_emit(buf, "%s\n", dbc->str.manufacturer); +} + +static ssize_t dbc_iManufacturer_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + struct xhci_hcd *xhci = hcd_to_xhci(dev_get_drvdata(dev)); + struct xhci_dbc *dbc = xhci->dbc; + + if (dbc->state != DS_DISABLED) + return -EBUSY; + + if (size > USB_MAX_STRING_LEN/2+1) + return -E2BIG; + + memcpy(dbc->str.manufacturer, buf, size); + /* remove newline and terminate the string */ + dbc->str.manufacturer[size-1] = '\0'; + + return size; +} static ssize_t dbc_iProduct_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -1347,6 +1376,7 @@ static DEVICE_ATTR_RW(dbc); static DEVICE_ATTR_RW(dbc_idVendor); static DEVICE_ATTR_RW(dbc_idProduct); static DEVICE_ATTR_RW(dbc_bcdDevice); +static DEVICE_ATTR_RW(dbc_iManufacturer); static DEVICE_ATTR_RW(dbc_iProduct); static DEVICE_ATTR_RW(dbc_iSerial); static DEVICE_ATTR_RW(dbc_bInterfaceProtocol); @@ -1357,6 +1387,7 @@ static struct attribute *dbc_dev_attrs[] = { &dev_attr_dbc_idVendor.attr, &dev_attr_dbc_idProduct.attr, &dev_attr_dbc_bcdDevice.attr, + &dev_attr_dbc_iManufacturer.attr, &dev_attr_dbc_iProduct.attr, &dev_attr_dbc_iSerial.attr, &dev_attr_dbc_bInterfaceProtocol.attr, -- 2.51.0.536.g15c5d4f767-goog