[PATCH v2] PCI/AER: Use a common function to print AER error bits

From: Alexandru Gagniuc
Date: Mon Apr 30 2018 - 15:52:41 EST


On errors reported from CPER, cper_print_bits() was used to log the
AER bits. This resulted in hard-to-understand messages, without a
prefix. Instead use __aer_print_error() for both native AER and CPER
to provide a more consistent log format.

Signed-off-by: Alexandru Gagniuc <mr.nuke.me@xxxxxxxxx>
---

Changes since v1:
- Parse aer regs for first error pointer instead of disabling it
On the Dell machine where I tested this, the first error pointer is
reported correctly by firmware.

drivers/pci/pcie/aer/aerdrv_errprint.c | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/pci/pcie/aer/aerdrv_errprint.c b/drivers/pci/pcie/aer/aerdrv_errprint.c
index cfc89dd57831..b5612cc51b63 100644
--- a/drivers/pci/pcie/aer/aerdrv_errprint.c
+++ b/drivers/pci/pcie/aer/aerdrv_errprint.c
@@ -216,28 +216,30 @@ EXPORT_SYMBOL_GPL(cper_severity_to_aer);
void cper_print_aer(struct pci_dev *dev, int aer_severity,
struct aer_capability_regs *aer)
{
- int layer, agent, status_strs_size, tlp_header_valid = 0;
+ int layer, agent, tlp_header_valid = 0;
u32 status, mask;
- const char **status_strs;
+ struct aer_err_info info;

if (aer_severity == AER_CORRECTABLE) {
status = aer->cor_status;
mask = aer->cor_mask;
- status_strs = aer_correctable_error_string;
- status_strs_size = ARRAY_SIZE(aer_correctable_error_string);
} else {
status = aer->uncor_status;
mask = aer->uncor_mask;
- status_strs = aer_uncorrectable_error_string;
- status_strs_size = ARRAY_SIZE(aer_uncorrectable_error_string);
tlp_header_valid = status & AER_LOG_TLP_MASKS;
}

layer = AER_GET_LAYER_ERROR(aer_severity, status);
agent = AER_GET_AGENT(aer_severity, status);

+ memset(&info, 0, sizeof(info));
+ info.severity = aer_severity;
+ info.status = status;
+ info.mask = mask;
+ info.first_error = PCI_ERR_CAP_FEP(aer->cap_control);
+
pci_err(dev, "aer_status: 0x%08x, aer_mask: 0x%08x\n", status, mask);
- cper_print_bits("", status, status_strs, status_strs_size);
+ __aer_print_error(dev, &info);
pci_err(dev, "aer_layer=%s, aer_agent=%s\n",
aer_error_layer[layer], aer_agent_string[agent]);

--
2.14.3