linux-kernel - [PATCH v2 1/3] PCI/AER: Fix incorrect return from aer_hest

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Message-Id: <1369924769-17183-2-git-send-email-betty.dall@hp.com>
Date:	Thu, 30 May 2013 08:39:27 -0600
From:	Betty Dall <betty.dall@...com>
To:	rjw@...k.pl, bhelgaas@...gle.com
Cc:	ying.huang@...el.com, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
	Betty Dall <betty.dall@...com>
Subject: [PATCH v2 1/3] PCI/AER: Fix incorrect return from aer_hest_parse()

The function aer_hest_parse() is called to determine if the given
PCI device is firmware first or not. The code loops through each
section of the HEST table to look for a match. The bug is that
the function always returns whether the last HEST section is firmware
first. The fix stops the iteration once the info.firmware_first
variable is set.  This is similar to how the function aer_hest_parse_aff()
stops the iteration.

Signed-off-by: Betty Dall <betty.dall@...com>
---

 drivers/pci/pcie/aer/aerdrv_acpi.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)


diff --git a/drivers/pci/pcie/aer/aerdrv_acpi.c b/drivers/pci/pcie/aer/aerdrv_acpi.c
index 5194a7d..39b8671 100644
--- a/drivers/pci/pcie/aer/aerdrv_acpi.c
+++ b/drivers/pci/pcie/aer/aerdrv_acpi.c
@@ -42,6 +42,9 @@ static int aer_hest_parse(struct acpi_hest_header *hest_hdr, void *data)
 	u8 bridge = 0;
 	int ff = 0;
 
+	if (info->firmware_first)
+		return 0;
+
 	switch (hest_hdr->type) {
 	case ACPI_HEST_TYPE_AER_ROOT_PORT:
 		pcie_type = PCI_EXP_TYPE_ROOT_PORT;
--
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