From: Hanjun Guo <guohanjun@huawei.com>
To: Ard Biesheuvel <ardb@kernel.org>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
"Sudeep Holla" <sudeep.holla@arm.com>,
Will Deacon <will@kernel.org>
Cc: linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
Hanjun Guo <guohanjun@huawei.com>
Subject: [PATCH v2] ACPI: IORT: Add extra message "applying workaround" for off-by-1 issue
Date: Fri, 8 May 2020 11:56:38 +0800 [thread overview]
Message-ID: <1588910198-8348-1-git-send-email-guohanjun@huawei.com> (raw)
As we already applied a workaround for the off-by-1 issue,
it's good to add extra message "applying workaround" to make
people less uneasy to see FW_BUG message in the boot log.
Signed-off-by: Hanjun Guo <guohanjun@huawei.com>
---
v2:
- Print the extra message only for rid_in == map->input_base;
- Still based on top of for-next/acpi branch of ARM64 repo
drivers/acpi/arm64/iort.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c
index b011d25..6e445bc 100644
--- a/drivers/acpi/arm64/iort.c
+++ b/drivers/acpi/arm64/iort.c
@@ -332,6 +332,8 @@ static int iort_id_map(struct acpi_iort_id_mapping *map, u8 type, u32 rid_in,
map, rid_in);
if (rid_in != map->input_base)
return -ENXIO;
+
+ pr_err(FW_BUG "applying workaround.\n");
}
*rid_out = map->output_base + (rid_in - map->input_base);
--
1.7.12.4
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next reply other threads:[~2020-05-08 4:07 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-08 3:56 Hanjun Guo [this message]
2020-05-08 7:58 ` [PATCH v2] ACPI: IORT: Add extra message "applying workaround" for off-by-1 issue Ard Biesheuvel
2020-05-11 16:27 ` Will Deacon
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