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author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2021-10-12 16:11:24 -0500 |
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committer | Bjorn Helgaas <bhelgaas@google.com> | 2021-10-18 09:20:15 -0500 |
commit | 2a4d9408c9e8b6f6fc150c66f3fef755c9e20d4a (patch) | |
tree | 199c2d2274b02bbb5e702ba124565c868fd1e069 /drivers/pci/iov.c | |
parent | d98d53331b727838122bc80e1898c4e1fc201fb0 (diff) | |
download | linux-2a4d9408c9e8b6f6fc150c66f3fef755c9e20d4a.tar.gz linux-2a4d9408c9e8b6f6fc150c66f3fef755c9e20d4a.tar.bz2 linux-2a4d9408c9e8b6f6fc150c66f3fef755c9e20d4a.zip |
PCI: Use to_pci_driver() instead of pci_dev->driver
Struct pci_driver contains a struct device_driver, so for PCI devices, it's
easy to convert a device_driver * to a pci_driver * with to_pci_driver().
The device_driver * is in struct device, so we don't need to also keep
track of the pci_driver * in struct pci_dev.
Replace pci_dev->driver with to_pci_driver(). This is a step toward
removing pci_dev->driver.
[bhelgaas: split to separate patch]
Link: https://lore.kernel.org/r/20211004125935.2300113-11-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/iov.c')
-rw-r--r-- | drivers/pci/iov.c | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index dafdc652fcd0..fa4b52bb1e05 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -164,13 +164,15 @@ static ssize_t sriov_vf_total_msix_show(struct device *dev, char *buf) { struct pci_dev *pdev = to_pci_dev(dev); + struct pci_driver *pdrv; u32 vf_total_msix = 0; device_lock(dev); - if (!pdev->driver || !pdev->driver->sriov_get_vf_total_msix) + pdrv = to_pci_driver(dev->driver); + if (!pdrv || !pdrv->sriov_get_vf_total_msix) goto unlock; - vf_total_msix = pdev->driver->sriov_get_vf_total_msix(pdev); + vf_total_msix = pdrv->sriov_get_vf_total_msix(pdev); unlock: device_unlock(dev); return sysfs_emit(buf, "%u\n", vf_total_msix); @@ -183,6 +185,7 @@ static ssize_t sriov_vf_msix_count_store(struct device *dev, { struct pci_dev *vf_dev = to_pci_dev(dev); struct pci_dev *pdev = pci_physfn(vf_dev); + struct pci_driver *pdrv; int val, ret; ret = kstrtoint(buf, 0, &val); @@ -193,13 +196,14 @@ static ssize_t sriov_vf_msix_count_store(struct device *dev, return -EINVAL; device_lock(&pdev->dev); - if (!pdev->driver || !pdev->driver->sriov_set_msix_vec_count) { + pdrv = to_pci_driver(dev->driver); + if (!pdrv || !pdrv->sriov_set_msix_vec_count) { ret = -EOPNOTSUPP; goto err_pdev; } device_lock(&vf_dev->dev); - if (vf_dev->driver) { + if (to_pci_driver(vf_dev->dev.driver)) { /* * A driver is already attached to this VF and has configured * itself based on the current MSI-X vector count. Changing @@ -209,7 +213,7 @@ static ssize_t sriov_vf_msix_count_store(struct device *dev, goto err_dev; } - ret = pdev->driver->sriov_set_msix_vec_count(vf_dev, val); + ret = pdrv->sriov_set_msix_vec_count(vf_dev, val); err_dev: device_unlock(&vf_dev->dev); @@ -376,6 +380,7 @@ static ssize_t sriov_numvfs_store(struct device *dev, const char *buf, size_t count) { struct pci_dev *pdev = to_pci_dev(dev); + struct pci_driver *pdrv; int ret; u16 num_vfs; @@ -392,14 +397,15 @@ static ssize_t sriov_numvfs_store(struct device *dev, goto exit; /* is PF driver loaded */ - if (!pdev->driver) { + pdrv = to_pci_driver(dev->driver); + if (!pdrv) { pci_info(pdev, "no driver bound to device; cannot configure SR-IOV\n"); ret = -ENOENT; goto exit; } /* is PF driver loaded w/callback */ - if (!pdev->driver->sriov_configure) { + if (!pdrv->sriov_configure) { pci_info(pdev, "driver does not support SR-IOV configuration via sysfs\n"); ret = -ENOENT; goto exit; @@ -407,7 +413,7 @@ static ssize_t sriov_numvfs_store(struct device *dev, if (num_vfs == 0) { /* disable VFs */ - ret = pdev->driver->sriov_configure(pdev, 0); + ret = pdrv->sriov_configure(pdev, 0); goto exit; } @@ -419,7 +425,7 @@ static ssize_t sriov_numvfs_store(struct device *dev, goto exit; } - ret = pdev->driver->sriov_configure(pdev, num_vfs); + ret = pdrv->sriov_configure(pdev, num_vfs); if (ret < 0) goto exit; |