diff options
| author | Saravana Kannan <saravanak@google.com> | 2024-02-02 01:56:33 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-02-02 07:12:33 -0800 |
| commit | 7fddac12c38237252431d5b8af7b6d5771b6d125 (patch) | |
| tree | 72b7a76614a496549cafcc68f0df2b2f8aa252cc /drivers/base | |
| parent | 98323e9d70172f1b46d1cadb20d6c54abf62870d (diff) | |
driver core: Fix device_link_flag_is_sync_state_only()
device_link_flag_is_sync_state_only() correctly returns true on the flags
of an existing device link that only implements sync_state() functionality.
However, it incorrectly and confusingly returns false if it's called with
DL_FLAG_SYNC_STATE_ONLY.
This bug doesn't manifest in any of the existing calls to this function,
but fix this confusing behavior to avoid future bugs.
Fixes: 67cad5c67019 ("driver core: fw_devlink: Add DL_FLAG_CYCLE support to device links")
Signed-off-by: Saravana Kannan <saravanak@google.com>
Tested-by: Xu Yang <xu.yang_2@nxp.com>
Link: https://lore.kernel.org/r/20240202095636.868578-2-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/core.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c index 14d46af40f9a..52215c4c7209 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -284,10 +284,12 @@ static bool device_is_ancestor(struct device *dev, struct device *target) return false; } +#define DL_MARKER_FLAGS (DL_FLAG_INFERRED | \ + DL_FLAG_CYCLE | \ + DL_FLAG_MANAGED) static inline bool device_link_flag_is_sync_state_only(u32 flags) { - return (flags & ~(DL_FLAG_INFERRED | DL_FLAG_CYCLE)) == - (DL_FLAG_SYNC_STATE_ONLY | DL_FLAG_MANAGED); + return (flags & ~DL_MARKER_FLAGS) == DL_FLAG_SYNC_STATE_ONLY; } /** |