ACPI Generic Address Structure (GAS) access_width field is not in bytes
as the driver seems to expect in few places so fix this by using the
newly introduced macro ACPI_ACCESS_BIT_WIDTH().
Reported-by: Jean Delvare <jdelvare@xxxxxxx>
Signed-off-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
---
Not sure if this is stable material since there is no user visible issues
without the fix. If this needs to go stable then the ACPICA change need to
be taken there as well (or we make separate fix for stable without the
macro).
drivers/acpi/acpi_watchdog.c | 3 +--
drivers/watchdog/wdat_wdt.c | 2 +-
2 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/acpi/acpi_watchdog.c b/drivers/acpi/acpi_watchdog.c
index b5516b04ffc0..ef0832999892 100644
--- a/drivers/acpi/acpi_watchdog.c
+++ b/drivers/acpi/acpi_watchdog.c
@@ -126,12 +126,11 @@ void __init acpi_watchdog_init(void)
gas = &entries[i].register_region;
res.start = gas->address;
+ res.end = res.start + ACPI_ACCESS_BIT_WIDTH(gas->access_width) - 1;
if (gas->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
res.flags = IORESOURCE_MEM;
- res.end = res.start + ALIGN(gas->access_width, 4) - 1;
} else if (gas->space_id == ACPI_ADR_SPACE_SYSTEM_IO) {
res.flags = IORESOURCE_IO;
- res.end = res.start + gas->access_width - 1;
} else {
pr_warn("Unsupported address space: %u\n",
gas->space_id);
diff --git a/drivers/watchdog/wdat_wdt.c b/drivers/watchdog/wdat_wdt.c
index b069349b52f5..2132018f031d 100644
--- a/drivers/watchdog/wdat_wdt.c
+++ b/drivers/watchdog/wdat_wdt.c
@@ -389,7 +389,7 @@ static int wdat_wdt_probe(struct platform_device *pdev)
memset(&r, 0, sizeof(r));
r.start = gas->address;
- r.end = r.start + gas->access_width - 1;
+ r.end = r.start + ACPI_ACCESS_BIT_WIDTH(gas->access_width) - 1;
if (gas->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
r.flags = IORESOURCE_MEM;
} else if (gas->space_id == ACPI_ADR_SPACE_SYSTEM_IO) {
--
2.25.0
