diff options
| author | David S. Miller <davem@davemloft.net> | 2020-03-04 14:21:00 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-03-04 14:21:00 -0800 |
| commit | e7c298854a04cf1d0b8d125e4dc5d14d7c2aba4c (patch) | |
| tree | ef3024987c045ae8c12f845d0ac4f775a5d37f5e /drivers/net/ethernet/sun/cassini.c | |
| parent | 5a1c63f129415bb8382a369275c3f2eb9cd92265 (diff) | |
| parent | ec46bf925a7f5c824dbf5278995ff8997c00a538 (diff) | |
Merge branch 'PCI-Add-and-use-constant-PCI_STATUS_ERROR_BITS-and-helper-pci_status_get_and_clear_errors'
Heiner Kallweit says:
====================
PCI: Add and use constant PCI_STATUS_ERROR_BITS and helper pci_status_get_and_clear_errors
Several drivers have own definitions for this constant, so move it
to the PCI core. In addition in multiple places the following code
sequence is used:
1. Read PCI_STATUS
2. Mask out non-error bits
3. Action based on set error bits
4. Write back set error bits to clear them
As this is a repeated pattern, add a helper to the PCI core.
Most affected drivers are network drivers. But as it's about core
PCI functionality, I suppose the series should go through the PCI
tree.
v2:
- fix formal issue with cover letter
v3:
- fix dumb typo in patch 7
v4:
- add patches 1-3
- move new constant PCI_STATUS_ERROR_BITS to include/linux/pci.h
- small improvements in commit messages
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/sun/cassini.c')
| -rw-r--r-- | drivers/net/ethernet/sun/cassini.c | 28 |
1 files changed, 10 insertions, 18 deletions
diff --git a/drivers/net/ethernet/sun/cassini.c b/drivers/net/ethernet/sun/cassini.c index 6ec9163e232c..e6d1aa882fa5 100644 --- a/drivers/net/ethernet/sun/cassini.c +++ b/drivers/net/ethernet/sun/cassini.c @@ -1716,34 +1716,26 @@ static int cas_pci_interrupt(struct net_device *dev, struct cas *cp, pr_cont("\n"); if (stat & PCI_ERR_OTHER) { - u16 cfg; + int pci_errs; /* Interrogate PCI config space for the * true cause. */ - pci_read_config_word(cp->pdev, PCI_STATUS, &cfg); - netdev_err(dev, "Read PCI cfg space status [%04x]\n", cfg); - if (cfg & PCI_STATUS_PARITY) + pci_errs = pci_status_get_and_clear_errors(cp->pdev); + + netdev_err(dev, "PCI status errors[%04x]\n", pci_errs); + if (pci_errs & PCI_STATUS_PARITY) netdev_err(dev, "PCI parity error detected\n"); - if (cfg & PCI_STATUS_SIG_TARGET_ABORT) + if (pci_errs & PCI_STATUS_SIG_TARGET_ABORT) netdev_err(dev, "PCI target abort\n"); - if (cfg & PCI_STATUS_REC_TARGET_ABORT) + if (pci_errs & PCI_STATUS_REC_TARGET_ABORT) netdev_err(dev, "PCI master acks target abort\n"); - if (cfg & PCI_STATUS_REC_MASTER_ABORT) + if (pci_errs & PCI_STATUS_REC_MASTER_ABORT) netdev_err(dev, "PCI master abort\n"); - if (cfg & PCI_STATUS_SIG_SYSTEM_ERROR) + if (pci_errs & PCI_STATUS_SIG_SYSTEM_ERROR) netdev_err(dev, "PCI system error SERR#\n"); - if (cfg & PCI_STATUS_DETECTED_PARITY) + if (pci_errs & PCI_STATUS_DETECTED_PARITY) netdev_err(dev, "PCI parity error\n"); - - /* Write the error bits back to clear them. */ - cfg &= (PCI_STATUS_PARITY | - PCI_STATUS_SIG_TARGET_ABORT | - PCI_STATUS_REC_TARGET_ABORT | - PCI_STATUS_REC_MASTER_ABORT | - PCI_STATUS_SIG_SYSTEM_ERROR | - PCI_STATUS_DETECTED_PARITY); - pci_write_config_word(cp->pdev, PCI_STATUS, cfg); } /* For all PCI errors, we should reset the chip. */ |