diff options
| author | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2023-09-19 15:56:46 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-11-28 17:07:00 +0000 |
| commit | 6b4608458205848f1ee71857197f7edec6f75141 (patch) | |
| tree | ad768dc2d949afdec583fb8f176ebdcf4ae7f73b /drivers/pci/pci.c | |
| parent | 442fd24d7b6b29e4a9cd9225afba4142d5f522ba (diff) | |
PCI: Use FIELD_GET() to extract Link Width
[ Upstream commit d1f9b39da4a5347150246871325190018cda8cb3 ]
Use FIELD_GET() to extract PCIe Negotiated and Maximum Link Width fields
instead of custom masking and shifting.
Link: https://lore.kernel.org/r/20230919125648.1920-7-ilpo.jarvinen@linux.intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
[bhelgaas: drop duplicate include of <linux/bitfield.h>]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 59b5c017d6c3..4f3788501720 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -6138,8 +6138,7 @@ u32 pcie_bandwidth_available(struct pci_dev *dev, struct pci_dev **limiting_dev, pcie_capability_read_word(dev, PCI_EXP_LNKSTA, &lnksta); next_speed = pcie_link_speed[lnksta & PCI_EXP_LNKSTA_CLS]; - next_width = (lnksta & PCI_EXP_LNKSTA_NLW) >> - PCI_EXP_LNKSTA_NLW_SHIFT; + next_width = FIELD_GET(PCI_EXP_LNKSTA_NLW, lnksta); next_bw = next_width * PCIE_SPEED2MBS_ENC(next_speed); @@ -6211,7 +6210,7 @@ enum pcie_link_width pcie_get_width_cap(struct pci_dev *dev) pcie_capability_read_dword(dev, PCI_EXP_LNKCAP, &lnkcap); if (lnkcap) - return (lnkcap & PCI_EXP_LNKCAP_MLW) >> 4; + return FIELD_GET(PCI_EXP_LNKCAP_MLW, lnkcap); return PCIE_LNK_WIDTH_UNKNOWN; } |