[PATCH v5 3/3] aerdrv: Cleanup log output for CPER based AER

[Lance Ortiz]

These changes make cper_print_aer more consistent with aer_print_error
which is called in the AER interrupt case. The string in the variable
'prefix' is printed at the beginning of each print statement in
cper_print_aer(). The prefix is a string containing the driver name
and the device's slot location.  From the callers the value of prefix
is never assigned and is NULL, so when cper_print_aer prints data the
initial string does not get printed.  This string is important because
it identifies the device that the error is on.

v1-v2 fix some compile errors withinn the #ifdef
v3-v4 remove agent id stuff and kept print the same to avoid
compatibility issues

Signed-off-by: Lance Ortiz <lance.ortiz@xxxxxx>
---

 drivers/pci/pcie/aer/aerdrv_errprint.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/drivers/pci/pcie/aer/aerdrv_errprint.c b/drivers/pci/pcie/aer/aerdrv_errprint.c
index 34d96e4..58ff4c0 100644
--- a/drivers/pci/pcie/aer/aerdrv_errprint.c
+++ b/drivers/pci/pcie/aer/aerdrv_errprint.c
@@ -228,9 +228,14 @@ void cper_print_aer(struct pci_dev *dev, int cper_severity,
 	int aer_severity, layer, agent, status_strs_size, tlp_header_valid = 0;
 	u32 status, mask;
 	const char **status_strs;
-	char *prefix = NULL;
+	char prefix[44];
 
 	aer_severity = cper_severity_to_aer(cper_severity);
+	snprintf(prefix, sizeof(prefix), "%s%s %s: ",
+		(aer_severity == AER_CORRECTABLE) ?
+		KERN_WARNING : KERN_ERR,
+		dev_driver_string(&dev->dev), dev_name(&dev->dev));
+
 	if (aer_severity == AER_CORRECTABLE) {
 		status = aer->cor_status;
 		mask = aer->cor_mask;

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