diff options
| author | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2023-10-18 14:32:52 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2023-10-24 10:54:04 -0500 |
| commit | f00e8dbdedfb0dc2b5712d2170e7fcbe4eb93603 (patch) | |
| tree | ed22c7f05e5fe0974a4c5dad5a20378ff0cf9981 | |
| parent | 9a9eec4765737b9b2a8d6ae03de6480a5f12dd5c (diff) | |
PCI/DPC: Use defined fields with DPC_CTL register
Instead of using a literal to clear bits, add PCI_EXP_DPC_CTL_EN_MASK
and use the usual pattern to modify a bitfield.
While at it, rearrange RMW code more logically together.
Link: https://lore.kernel.org/r/20231018113254.17616-6-ilpo.jarvinen@linux.intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| -rw-r--r-- | drivers/pci/pcie/dpc.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/pci/pcie/dpc.c b/drivers/pci/pcie/dpc.c index a5c259ada9ea..0048a11bd119 100644 --- a/drivers/pci/pcie/dpc.c +++ b/drivers/pci/pcie/dpc.c @@ -18,6 +18,9 @@ #include "portdrv.h" #include "../pci.h" +#define PCI_EXP_DPC_CTL_EN_MASK (PCI_EXP_DPC_CTL_EN_FATAL | \ + PCI_EXP_DPC_CTL_EN_NONFATAL) + static const char * const rp_pio_error_string[] = { "Configuration Request received UR Completion", /* Bit Position 0 */ "Configuration Request received CA Completion", /* Bit Position 1 */ @@ -369,12 +372,13 @@ static int dpc_probe(struct pcie_device *dev) } pci_read_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CAP, &cap); - pci_read_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, &ctl); - ctl = (ctl & 0xfff4) | PCI_EXP_DPC_CTL_EN_FATAL | PCI_EXP_DPC_CTL_INT_EN; + pci_read_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, &ctl); + ctl &= ~PCI_EXP_DPC_CTL_EN_MASK; + ctl |= PCI_EXP_DPC_CTL_EN_FATAL | PCI_EXP_DPC_CTL_INT_EN; pci_write_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, ctl); - pci_info(pdev, "enabled with IRQ %d\n", dev->irq); + pci_info(pdev, "enabled with IRQ %d\n", dev->irq); pci_info(pdev, "error containment capabilities: Int Msg #%d, RPExt%c PoisonedTLP%c SwTrigger%c RP PIO Log %d, DL_ActiveErr%c\n", cap & PCI_EXP_DPC_IRQ, FLAG(cap, PCI_EXP_DPC_CAP_RP_EXT), FLAG(cap, PCI_EXP_DPC_CAP_POISONED_TLP), |