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From:   Xiaochun Lee <lixiaochun.2888@163.com>
To:     lenb@kernel.org, rafael@kernel.org, tony.luck@intel.com
Cc:     rafael.j.wysocki@intel.com, linux-acpi@vger.kernel.org,
        linux-kernel@vger.kernel.org, xiaocli@redhat.com,
        ahuang12@lenovo.com, Xiaochun Lee <lixc17@lenovo.com>
Subject: [PATCH v1] ACPI: extlog: Fix finding the generic error data for v3 structure
Date:   Wed,  2 Aug 2023 21:47:46 +0800
Message-Id: <1690984066-31757-1-git-send-email-lixiaochun.2888@163.com>
Precedence: bulk

From: Xiaochun Lee <lixc17@lenovo.com>

Fix by using acpi_hest_get_payload( ) to find out the correct
generic error data for v3 structure. The revision v300 generic
error data is different from the old one, so for compatibility
with old and new version, change to a new interface to locate
the right memory error section that was defined in CPER.

Signed-off-by: Xiaochun Lee <lixc17@lenovo.com>
---
 drivers/acpi/acpi_extlog.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/acpi/acpi_extlog.c b/drivers/acpi/acpi_extlog.c
index e648158368a7..e120a96e1eae 100644
--- a/drivers/acpi/acpi_extlog.c
+++ b/drivers/acpi/acpi_extlog.c
@@ -172,7 +172,7 @@ static int extlog_print(struct notifier_block *nb, unsigned long val,
 			fru_text = "";
 		sec_type = (guid_t *)gdata->section_type;
 		if (guid_equal(sec_type, &CPER_SEC_PLATFORM_MEM)) {
-			struct cper_sec_mem_err *mem = (void *)(gdata + 1);
+			struct cper_sec_mem_err *mem = acpi_hest_get_payload(gdata);
 
 			if (gdata->error_data_length >= sizeof(*mem))
 				trace_extlog_mem_event(mem, err_seq, fru_id, fru_text,
-- 
2.37.3