| Message ID | 20210927204326.612555-5-uwe@kleine-koenig.org (mailing list archive) |
|---|---|
| State | Handled Elsewhere |
| Headers | show |
| Series | PCI: Drop duplicated tracking of a pci_dev's bound driver | expand |
Uwe Kleine-König <uwe@kleine-koenig.org> writes: > From: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> > > struct pci_dev::driver holds (apart from a constant offset) the same > data as struct pci_dev::dev->driver. With the goal to remove struct > pci_dev::driver to get rid of data duplication replace getting the > driver name by dev_driver_string() which implicitly makes use of struct > pci_dev::dev->driver. > > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> > --- > arch/powerpc/include/asm/ppc-pci.h | 9 ++++++++- > drivers/bcma/host_pci.c | 7 ++++--- For bcma: Acked-by: Kalle Valo <kvalo@codeaurora.org>
On Tue, Sep 28, 2021 at 12:01:28PM +0200, Simon Horman wrote: > On Mon, Sep 27, 2021 at 10:43:22PM +0200, Uwe Kleine-König wrote: > > From: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> > > > > struct pci_dev::driver holds (apart from a constant offset) the same > > data as struct pci_dev::dev->driver. With the goal to remove struct > > pci_dev::driver to get rid of data duplication replace getting the > > driver name by dev_driver_string() which implicitly makes use of struct > > pci_dev::dev->driver. > > > > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> > > ... > > > diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c > > index 0685ece1f155..23dfb599c828 100644 > > --- a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c > > +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c > > @@ -202,7 +202,7 @@ nfp_get_drvinfo(struct nfp_app *app, struct pci_dev *pdev, > > { > > char nsp_version[ETHTOOL_FWVERS_LEN] = {}; > > > > - strlcpy(drvinfo->driver, pdev->driver->name, sizeof(drvinfo->driver)); > > + strlcpy(drvinfo->driver, dev_driver_string(&pdev->dev), sizeof(drvinfo->driver)); > > I'd slightly prefer to maintain lines under 80 columns wide. > But not nearly strongly enough to engage in a long debate about it. :-) Looking at the output of git grep strlcpy.\*sizeof I wonder if it would be sensible to introduce something like #define strlcpy_array(arr, src) (strlcpy(arr, src, sizeof(arr)) + __must_be_array(arr)) but not sure this is possible without a long debate either (and this line is over 80 chars wide, too :-). > In any case, for the NFP portion of this patch. > > Acked-by: Simon Horman <simon.horman@corigine.com> Thanks Uwe
diff --git a/arch/powerpc/include/asm/ppc-pci.h b/arch/powerpc/include/asm/ppc-pci.h index 2b9edbf6e929..e8f1795a2acf 100644 --- a/arch/powerpc/include/asm/ppc-pci.h +++ b/arch/powerpc/include/asm/ppc-pci.h @@ -57,7 +57,14 @@ void eeh_sysfs_remove_device(struct pci_dev *pdev); static inline const char *eeh_driver_name(struct pci_dev *pdev) { - return (pdev && pdev->driver) ? pdev->driver->name : "<null>"; + if (pdev) { + const char *drvstr = dev_driver_string(&pdev->dev); + + if (strcmp(drvstr, "")) + return drvstr; + } + + return "<null>"; } #endif /* CONFIG_EEH */ diff --git a/drivers/bcma/host_pci.c b/drivers/bcma/host_pci.c index 69c10a7b7c61..0973022d4b13 100644 --- a/drivers/bcma/host_pci.c +++ b/drivers/bcma/host_pci.c @@ -175,9 +175,10 @@ static int bcma_host_pci_probe(struct pci_dev *dev, if (err) goto err_kfree_bus; - name = dev_name(&dev->dev); - if (dev->driver && dev->driver->name) - name = dev->driver->name; + name = dev_driver_string(&dev->dev); + if (!strcmp(name, "")) + name = dev_name(&dev->dev); + err = pci_request_regions(dev, name); if (err) goto err_pci_disable; diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c index 369562d34d66..8f361e54e524 100644 --- a/drivers/crypto/hisilicon/qm.c +++ b/drivers/crypto/hisilicon/qm.c @@ -3085,7 +3085,7 @@ static int qm_alloc_uacce(struct hisi_qm *qm) }; int ret; - ret = strscpy(interface.name, pdev->driver->name, + ret = strscpy(interface.name, dev_driver_string(&pdev->dev), sizeof(interface.name)); if (ret < 0) return -ENAMETOOLONG; diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c index 7ea511d59e91..f279edfce3f1 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c @@ -606,7 +606,7 @@ static void hns3_get_drvinfo(struct net_device *netdev, return; } - strncpy(drvinfo->driver, h->pdev->driver->name, + strncpy(drvinfo->driver, dev_driver_string(&h->pdev->dev), sizeof(drvinfo->driver)); drvinfo->driver[sizeof(drvinfo->driver) - 1] = '\0'; diff --git a/drivers/net/ethernet/marvell/prestera/prestera_pci.c b/drivers/net/ethernet/marvell/prestera/prestera_pci.c index a250d394da38..a8f007f6dad2 100644 --- a/drivers/net/ethernet/marvell/prestera/prestera_pci.c +++ b/drivers/net/ethernet/marvell/prestera/prestera_pci.c @@ -720,7 +720,7 @@ static int prestera_fw_load(struct prestera_fw *fw) static int prestera_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) { - const char *driver_name = pdev->driver->name; + const char *driver_name = dev_driver_string(&pdev->dev); struct prestera_fw *fw; int err; diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c b/drivers/net/ethernet/mellanox/mlxsw/pci.c index 13b0259f7ea6..8f306364f7bf 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/pci.c +++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c @@ -1876,7 +1876,7 @@ static void mlxsw_pci_cmd_fini(struct mlxsw_pci *mlxsw_pci) static int mlxsw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) { - const char *driver_name = pdev->driver->name; + const char *driver_name = dev_driver_string(&pdev->dev); struct mlxsw_pci *mlxsw_pci; int err; diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c index 0685ece1f155..23dfb599c828 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c @@ -202,7 +202,7 @@ nfp_get_drvinfo(struct nfp_app *app, struct pci_dev *pdev, { char nsp_version[ETHTOOL_FWVERS_LEN] = {}; - strlcpy(drvinfo->driver, pdev->driver->name, sizeof(drvinfo->driver)); + strlcpy(drvinfo->driver, dev_driver_string(&pdev->dev), sizeof(drvinfo->driver)); nfp_net_get_nspinfo(app, nsp_version); snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), "%s %s %s %s", vnic_version, nsp_version, diff --git a/drivers/ssb/pcihost_wrapper.c b/drivers/ssb/pcihost_wrapper.c index 410215c16920..4938ed5cfae5 100644 --- a/drivers/ssb/pcihost_wrapper.c +++ b/drivers/ssb/pcihost_wrapper.c @@ -78,9 +78,11 @@ static int ssb_pcihost_probe(struct pci_dev *dev, err = pci_enable_device(dev); if (err) goto err_kfree_ssb; - name = dev_name(&dev->dev); - if (dev->driver && dev->driver->name) - name = dev->driver->name; + + name = dev_driver_string(&dev->dev); + if (*name == '\0') + name = dev_name(&dev->dev); + err = pci_request_regions(dev, name); if (err) goto err_pci_disable;