From: Guenter Roeck Date: Fri, 27 May 2016 21:19:06 +0000 (-0700) Subject: watchdog: Improve description of min_hw_heartbeat_ms X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f9f535c1b76128f94dae7a4bb41464aacd4c10ec;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git watchdog: Improve description of min_hw_heartbeat_ms The description of min_hw_heartbeat_ms is misleading and needs some improvements. Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck --- diff --git a/Documentation/watchdog/watchdog-kernel-api.txt b/Documentation/watchdog/watchdog-kernel-api.txt index 917eeeabfa5e..92700d229bf9 100644 --- a/Documentation/watchdog/watchdog-kernel-api.txt +++ b/Documentation/watchdog/watchdog-kernel-api.txt @@ -82,8 +82,9 @@ It contains following fields: * max_timeout: the watchdog timer's maximum timeout value (in seconds), as seen from userspace. If set, the maximum configurable value for 'timeout'. Not used if max_hw_heartbeat_ms is non-zero. -* min_hw_heartbeat_ms: Minimum time between heartbeats sent to the chip, - in milli-seconds. +* min_hw_heartbeat_ms: Hardware limit for minimum time between heartbeats, + in milli-seconds. This value is normally 0; it should only be provided + if the hardware can not tolerate lower intervals between heartbeats. * max_hw_heartbeat_ms: Maximum hardware heartbeat, in milli-seconds. If set, the infrastructure will send heartbeats to the watchdog driver if 'timeout' is larger than max_hw_heartbeat_ms, unless WDOG_ACTIVE diff --git a/include/linux/watchdog.h b/include/linux/watchdog.h index 6b75e38b683f..7047bc7f8106 100644 --- a/include/linux/watchdog.h +++ b/include/linux/watchdog.h @@ -66,7 +66,8 @@ struct watchdog_ops { * as configurable from user space. Only relevant if * max_hw_heartbeat_ms is not provided. * @min_hw_heartbeat_ms: - * Minimum time between heartbeats, in milli-seconds. + * Hardware limit for minimum time between heartbeats, + * in milli-seconds. * @max_hw_heartbeat_ms: * Hardware limit for maximum timeout, in milli-seconds. * Replaces max_timeout if specified.