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(p200300ea8f1fad006ca0dfccde5df04e.dip0.t-ipconnect.de. [2003:ea:8f1f:ad00:6ca0:dfcc:de5d:f04e]) by smtp.googlemail.com with ESMTPSA id s23sm13753893wmc.29.2021.02.12.02.03.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 12 Feb 2021 02:03:15 -0800 (PST) From: Heiner Kallweit Subject: [PATCH RESEND] PCI/VPD: Remove pci_set_vpd_size To: Bjorn Helgaas Cc: "linux-pci@vger.kernel.org" Message-ID: <47d86e52-9bcf-7da7-1edb-0d988a7a82ab@gmail.com> Date: Fri, 12 Feb 2021 11:02:47 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org 24a1720a0841 ("cxgb4: collect serial config version from register") removed the only usage of pci_set_vpd_size(). If a device needs to override the auto-detected VPD size, then this can be done using a PCI quirk, like it's done for Chelsio devices. There's no need to allow drivers to change the VPD size. So let's remove pci_set_vpd_size(). Signed-off-by: Heiner Kallweit Reviewed-by: Krzysztof Wilczyński --- - Referenced commit just landed in linux-next via the netdev tree. - Uups, had the list on bcc instead of cc. --- drivers/pci/vpd.c | 47 +++++++-------------------------------------- include/linux/pci.h | 1 - 2 files changed, 7 insertions(+), 41 deletions(-) diff --git a/drivers/pci/vpd.c b/drivers/pci/vpd.c index 4cf0d77ca..d1cbc5e64 100644 --- a/drivers/pci/vpd.c +++ b/drivers/pci/vpd.c @@ -16,7 +16,6 @@ struct pci_vpd_ops { ssize_t (*read)(struct pci_dev *dev, loff_t pos, size_t count, void *buf); ssize_t (*write)(struct pci_dev *dev, loff_t pos, size_t count, const void *buf); - int (*set_size)(struct pci_dev *dev, size_t len); }; struct pci_vpd { @@ -59,19 +58,6 @@ ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void } EXPORT_SYMBOL(pci_write_vpd); -/** - * pci_set_vpd_size - Set size of Vital Product Data space - * @dev: pci device struct - * @len: size of vpd space - */ -int pci_set_vpd_size(struct pci_dev *dev, size_t len) -{ - if (!dev->vpd || !dev->vpd->ops) - return -ENODEV; - return dev->vpd->ops->set_size(dev, len); -} -EXPORT_SYMBOL(pci_set_vpd_size); - #define PCI_VPD_MAX_SIZE (PCI_VPD_ADDR_MASK + 1) /** @@ -296,23 +282,19 @@ static ssize_t pci_vpd_write(struct pci_dev *dev, loff_t pos, size_t count, return ret ? ret : count; } -static int pci_vpd_set_size(struct pci_dev *dev, size_t len) +static void pci_vpd_set_size(struct pci_dev *dev, size_t len) { struct pci_vpd *vpd = dev->vpd; - if (len == 0 || len > PCI_VPD_MAX_SIZE) - return -EIO; - - vpd->valid = 1; - vpd->len = len; - - return 0; + if (vpd && len && len <= PCI_VPD_MAX_SIZE) { + vpd->valid = 1; + vpd->len = len; + } } static const struct pci_vpd_ops pci_vpd_ops = { .read = pci_vpd_read, .write = pci_vpd_write, - .set_size = pci_vpd_set_size, }; static ssize_t pci_vpd_f0_read(struct pci_dev *dev, loff_t pos, size_t count, @@ -345,24 +327,9 @@ static ssize_t pci_vpd_f0_write(struct pci_dev *dev, loff_t pos, size_t count, return ret; } -static int pci_vpd_f0_set_size(struct pci_dev *dev, size_t len) -{ - struct pci_dev *tdev = pci_get_slot(dev->bus, - PCI_DEVFN(PCI_SLOT(dev->devfn), 0)); - int ret; - - if (!tdev) - return -ENODEV; - - ret = pci_set_vpd_size(tdev, len); - pci_dev_put(tdev); - return ret; -} - static const struct pci_vpd_ops pci_vpd_f0_ops = { .read = pci_vpd_f0_read, .write = pci_vpd_f0_write, - .set_size = pci_vpd_f0_set_size, }; int pci_vpd_init(struct pci_dev *dev) @@ -528,9 +495,9 @@ static void quirk_chelsio_extend_vpd(struct pci_dev *dev) * limits. */ if (chip == 0x0 && prod >= 0x20) - pci_set_vpd_size(dev, 8192); + pci_vpd_set_size(dev, 8192); else if (chip >= 0x4 && func < 0x8) - pci_set_vpd_size(dev, 2048); + pci_vpd_set_size(dev, 2048); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID, diff --git a/include/linux/pci.h b/include/linux/pci.h index 86c799c97..edadc62ae 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1302,7 +1302,6 @@ void pci_unlock_rescan_remove(void); /* Vital Product Data routines */ ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf); ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf); -int pci_set_vpd_size(struct pci_dev *dev, size_t len); /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */ resource_size_t pcibios_retrieve_fw_addr(struct pci_dev *dev, int idx); -- 2.30.0