lkml.org 
[lkml]   [2018]   [Jun]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2] PCI/AER: Fix aerdrv loading with "pcie_ports=native" parameter
Date
According to the documentation, "pcie_ports=native", linux should use
native AER and DPC services. While that is true for the _OSC method
parsing, this is not the only place that is checked. Should the HEST
table list PCIe ports as firmware-first, linux will not use native
services.

This happens because aer_acpi_firmware_first() doesn't take
'pcie_ports' into account. This is wrong. DPC uses the same logic when
it decides whether to load or not, so fixing this also fixes DPC not
loading.

Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
---
drivers/pci/pcie/aer.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

Changes since v1:
- Re-tested with latest and greatest (v4.18-rc1) -- works great

diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
index a2e88386af28..98ced0f7c850 100644
--- a/drivers/pci/pcie/aer.c
+++ b/drivers/pci/pcie/aer.c
@@ -291,7 +291,7 @@ static void aer_set_firmware_first(struct pci_dev *pci_dev)

rc = apei_hest_parse(aer_hest_parse, &info);

- if (rc)
+ if (rc || pcie_ports_native)
pci_dev->__aer_firmware_first = 0;
else
pci_dev->__aer_firmware_first = info.firmware_first;
@@ -327,6 +327,9 @@ bool aer_acpi_firmware_first(void)
apei_hest_parse(aer_hest_parse, &info);
aer_firmware_first = info.firmware_first;
parsed = true;
+ if (pcie_ports_native)
+ aer_firmware_first = 0;
+
}
return aer_firmware_first;
}
--
2.14.3
\
 
 \ /
  Last update: 2018-06-19 21:59    [W:0.148 / U:4.880 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site