diff options
| author | Keith Busch <keith.busch@intel.com> | 2018-07-16 17:05:03 -0500 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2018-07-19 16:21:01 -0500 |
| commit | f1d16b17568e46f61cc59e2d0725b0fca856a34f (patch) | |
| tree | b076531224608c66573de21266868d14508ec5f1 /drivers/pci | |
| parent | 0c27e28f77179548aa3d25a8f7a3dda22fd3e080 (diff) | |
| download | linux-stable-f1d16b17568e46f61cc59e2d0725b0fca856a34f.tar.gz linux-stable-f1d16b17568e46f61cc59e2d0725b0fca856a34f.tar.bz2 linux-stable-f1d16b17568e46f61cc59e2d0725b0fca856a34f.zip | |
PCI/DPC: Remove rp_pio_status from dpc struct
We don't need to save the rp pio status across multiple contexts as all
DPC event handling occurs in a single work queue context.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Sinan Kaya <okaya@kernel.org>
Reviewed-by: Oza Pawandeep <poza@codeaurora.org>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pcie/dpc.c | 17 |
1 files changed, 5 insertions, 12 deletions
diff --git a/drivers/pci/pcie/dpc.c b/drivers/pci/pcie/dpc.c index 5f5fac279c75..1b0b25ba947c 100644 --- a/drivers/pci/pcie/dpc.c +++ b/drivers/pci/pcie/dpc.c @@ -19,7 +19,6 @@ struct dpc_dev { struct work_struct work; u16 cap_pos; bool rp_extensions; - u32 rp_pio_status; u8 rp_log_size; }; @@ -96,11 +95,6 @@ static pci_ers_result_t dpc_reset_link(struct pci_dev *pdev) if (dpc->rp_extensions && dpc_wait_rp_inactive(dpc)) return PCI_ERS_RESULT_DISCONNECT; - if (dpc->rp_extensions && dpc->rp_pio_status) { - pci_write_config_dword(pdev, cap + PCI_EXP_DPC_RP_PIO_STATUS, - dpc->rp_pio_status); - dpc->rp_pio_status = 0; - } pci_write_config_word(pdev, cap + PCI_EXP_DPC_STATUS, PCI_EXP_DPC_STATUS_TRIGGER); @@ -122,8 +116,6 @@ static void dpc_process_rp_pio_error(struct dpc_dev *dpc) dev_err(dev, "rp_pio_status: %#010x, rp_pio_mask: %#010x\n", status, mask); - dpc->rp_pio_status = status; - pci_read_config_dword(pdev, cap + PCI_EXP_DPC_RP_PIO_SEVERITY, &sev); pci_read_config_dword(pdev, cap + PCI_EXP_DPC_RP_PIO_SYSERROR, &syserr); pci_read_config_dword(pdev, cap + PCI_EXP_DPC_RP_PIO_EXCEPTION, &exc); @@ -134,15 +126,14 @@ static void dpc_process_rp_pio_error(struct dpc_dev *dpc) pci_read_config_word(pdev, cap + PCI_EXP_DPC_STATUS, &dpc_status); first_error = (dpc_status & 0x1f00) >> 8; - status &= ~mask; for (i = 0; i < ARRAY_SIZE(rp_pio_error_string); i++) { - if (status & (1 << i)) + if ((status & ~mask) & (1 << i)) dev_err(dev, "[%2d] %s%s\n", i, rp_pio_error_string[i], first_error == i ? " (First)" : ""); } if (dpc->rp_log_size < 4) - return; + goto clear_status; pci_read_config_dword(pdev, cap + PCI_EXP_DPC_RP_PIO_HEADER_LOG, &dw0); pci_read_config_dword(pdev, cap + PCI_EXP_DPC_RP_PIO_HEADER_LOG + 4, @@ -155,7 +146,7 @@ static void dpc_process_rp_pio_error(struct dpc_dev *dpc) dw0, dw1, dw2, dw3); if (dpc->rp_log_size < 5) - return; + goto clear_status; pci_read_config_dword(pdev, cap + PCI_EXP_DPC_RP_PIO_IMPSPEC_LOG, &log); dev_err(dev, "RP PIO ImpSpec Log %#010x\n", log); @@ -164,6 +155,8 @@ static void dpc_process_rp_pio_error(struct dpc_dev *dpc) cap + PCI_EXP_DPC_RP_PIO_TLPPREFIX_LOG, &prefix); dev_err(dev, "TLP Prefix Header: dw%d, %#010x\n", i, prefix); } + clear_status: + pci_write_config_dword(pdev, cap + PCI_EXP_DPC_RP_PIO_STATUS, status); } static void dpc_work(struct work_struct *work) |