diff options
| author |   Saravana Kannan <saravanak@google.com> | 2020-12-17 19:17:01 -0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-07 21:03:14 +0100 |
| commit | b90fb8f66c617806a0548c273f562caea4741433 (patch) | |
| tree | 2f55e4f5cd98372af6cc2ca4a70b3bdd2ccc26d7 /drivers/base/core.c | |
| parent | driver core: Add device link support for INFERRED flag (diff) | |
| download | linux-dev-b90fb8f66c617806a0548c273f562caea4741433.tar.xz linux-dev-b90fb8f66c617806a0548c273f562caea4741433.zip | |
driver core: Have fw_devlink use DL_FLAG_INFERRED
This will be useful in identifying device links created only due to
fw_devlink when we need to break cyclic dependencies due to fw_devlink.
Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20201218031703.3053753-4-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base/core.c')
| -rw-r--r-- | drivers/base/core.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c index 5827dbff7f21..1107d03aa6b3 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -1450,7 +1450,14 @@ static void device_links_purge(struct device *dev) device_links_write_unlock(); } -static u32 fw_devlink_flags = DL_FLAG_SYNC_STATE_ONLY; +#define FW_DEVLINK_FLAGS_PERMISSIVE (DL_FLAG_INFERRED | \ + DL_FLAG_SYNC_STATE_ONLY) +#define FW_DEVLINK_FLAGS_ON (DL_FLAG_INFERRED | \ + DL_FLAG_AUTOPROBE_CONSUMER) +#define FW_DEVLINK_FLAGS_RPM (FW_DEVLINK_FLAGS_ON | \ + DL_FLAG_PM_RUNTIME) + +static u32 fw_devlink_flags = FW_DEVLINK_FLAGS_PERMISSIVE; static int __init fw_devlink_setup(char *arg) { if (!arg) @@ -1459,12 +1466,11 @@ static int __init fw_devlink_setup(char *arg) if (strcmp(arg, "off") == 0) { fw_devlink_flags = 0; } else if (strcmp(arg, "permissive") == 0) { - fw_devlink_flags = DL_FLAG_SYNC_STATE_ONLY; + fw_devlink_flags = FW_DEVLINK_FLAGS_PERMISSIVE; } else if (strcmp(arg, "on") == 0) { - fw_devlink_flags = DL_FLAG_AUTOPROBE_CONSUMER; + fw_devlink_flags = FW_DEVLINK_FLAGS_ON; } else if (strcmp(arg, "rpm") == 0) { - fw_devlink_flags = DL_FLAG_AUTOPROBE_CONSUMER | - DL_FLAG_PM_RUNTIME; + fw_devlink_flags = FW_DEVLINK_FLAGS_RPM; } return 0; } @@ -1477,7 +1483,7 @@ u32 fw_devlink_get_flags(void) static bool fw_devlink_is_permissive(void) { - return fw_devlink_flags == DL_FLAG_SYNC_STATE_ONLY; + return fw_devlink_flags == FW_DEVLINK_FLAGS_PERMISSIVE; } static void fw_devlink_parse_fwnode(struct fwnode_handle *fwnode) @@ -1624,7 +1630,7 @@ static void __fw_devlink_link_to_consumers(struct device *dev) con_dev = NULL; } else { own_link = false; - dl_flags = DL_FLAG_SYNC_STATE_ONLY; + dl_flags = FW_DEVLINK_FLAGS_PERMISSIVE; } } @@ -1679,7 +1685,7 @@ static void __fw_devlink_link_to_suppliers(struct device *dev, if (own_link) dl_flags = fw_devlink_get_flags(); else - dl_flags = DL_FLAG_SYNC_STATE_ONLY; + dl_flags = FW_DEVLINK_FLAGS_PERMISSIVE; list_for_each_entry_safe(link, tmp, &fwnode->suppliers, c_hook) { int ret; |