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(p200300ea8f084500b5d8a3dcf88fcae2.dip0.t-ipconnect.de. [2003:ea:8f08:4500:b5d8:a3dc:f88f:cae2]) by smtp.googlemail.com with ESMTPSA id b15sm4506359wru.1.2021.08.26.11.58.27 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 26 Aug 2021 11:58:29 -0700 (PDT) Subject: [PATCH 4/7] PCI/VPD: Add pci_vpd_find_id_string() From: Heiner Kallweit To: Bjorn Helgaas Cc: "linux-pci@vger.kernel.org" References: <5fa6578d-1515-20d3-be5f-9e7dc7db4424@gmail.com> Message-ID: Date: Thu, 26 Aug 2021 20:55:43 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 MIME-Version: 1.0 In-Reply-To: <5fa6578d-1515-20d3-be5f-9e7dc7db4424@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Similar to pci_vpd_find_ro_info_keyword() provide an API function to retrieve the ID string from VPD. This way callers don't have to deal with low-level function pci_vpd_lrdt_size() any longer that can be made private to the VPD core in a subsequent patch. Signed-off-by: Heiner Kallweit --- drivers/pci/vpd.c | 6 ++++++ include/linux/pci.h | 10 ++++++++++ 2 files changed, 16 insertions(+) diff --git a/drivers/pci/vpd.c b/drivers/pci/vpd.c index b7bf014cc..79712b3d1 100644 --- a/drivers/pci/vpd.c +++ b/drivers/pci/vpd.c @@ -320,6 +320,12 @@ static int pci_vpd_find_tag(const u8 *buf, unsigned int len, u8 rdt, unsigned in return -ENOENT; } +int pci_vpd_find_id_string(const u8 *buf, unsigned int len, unsigned int *size) +{ + return pci_vpd_find_tag(buf, len, PCI_VPD_LRDT_ID_STRING, size); +} +EXPORT_SYMBOL_GPL(pci_vpd_find_id_string); + static int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off, unsigned int len, const char *kw) { diff --git a/include/linux/pci.h b/include/linux/pci.h index 0d6c45b1b..f83930562 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -2350,6 +2350,16 @@ static inline u8 pci_vpd_info_field_size(const u8 *info_field) */ void *pci_vpd_alloc(struct pci_dev *dev, unsigned int *size); +/** + * pci_vpd_find_id_string - Locate id string in VPD + * @buf: Pointer to buffered VPD data + * @len: The length of the buffer area in which to search + * @size: Pointer to field where length of id string is returned + * + * Returns the index of the id string or -ENOENT if not found. + */ +int pci_vpd_find_id_string(const u8 *buf, unsigned int len, unsigned int *size); + /** * pci_vpd_find_ro_info_keyword - Locate info field keyword in VPD RO section * @buf: Pointer to buffered VPD data -- 2.33.0