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authorTakashi Iwai <tiwai@suse.de>2018-03-19 14:51:49 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2018-03-19 23:17:07 +0100
commitb1abf6fc49829d89660c961fafe3f90f3d843c55 (patch)
tree03d19e68d490cf030fd3d9e2c0c7084259b9617f /drivers/watchdog
parentc698ca5278934c0ae32297a8725ced2e27585d7f (diff)
ACPI / watchdog: Fix off-by-one error at resource assignment
The resource allocation in WDAT watchdog has off-one-by error, it sets one byte more than the actual end address. This may eventually lead to unexpected resource conflicts. Fixes: 058dfc767008 (ACPI / watchdog: Add support for WDAT hardware watchdog) Cc: 4.9+ <stable@vger.kernel.org> # 4.9+ Signed-off-by: Takashi Iwai <tiwai@suse.de> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/watchdog')
-rw-r--r--drivers/watchdog/wdat_wdt.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/watchdog/wdat_wdt.c b/drivers/watchdog/wdat_wdt.c
index 6d1fbda0f461..0da9943d405f 100644
--- a/drivers/watchdog/wdat_wdt.c
+++ b/drivers/watchdog/wdat_wdt.c
@@ -392,7 +392,7 @@ 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;
+ r.end = r.start + 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) {