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| author | Johan Hovold <johan@hovoldconsulting.com> | 2016-05-27 17:26:22 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@google.com> | 2016-05-27 12:19:29 -0700 |
| commit | 7aefe7918f8e053f9cd8077fcc98182689f1341e (patch) | |
| tree | 6e3c9c0ac0d8687477a3963c81f89b252aeb1423 /drivers/staging/greybus/connection.h | |
| parent | 898d75f4aa8b1aeb99df8fe275cb3fcfa3dc0688 (diff) | |
| download | op-kernel-dev-7aefe7918f8e053f9cd8077fcc98182689f1341e.zip op-kernel-dev-7aefe7918f8e053f9cd8077fcc98182689f1341e.tar.gz | |
greybus: core: avoid I/O to disconnected interfaces
Add new helper to disable connections to interfaces that have already
been disconnected (e.g. forcibly removed).
The connection tear-down procedure differs enough depending on whether
the interface is still present or already gone to warrant a dedicated
helper. This will become more obvious with the new tear-down procedure,
which involves I/O on the connection being tore down.
This also simplifies handling of the legacy bootrom, which does not
support the new tear-down operations.
Specifically, this allows us to remove the early control-connection
tear down during interface disable, and also avoids some error messages
currently printed during legacy mode switch (i.e. bootrom
boot-over-UniPro) and forcible removal.
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Diffstat (limited to 'drivers/staging/greybus/connection.h')
| -rw-r--r-- | drivers/staging/greybus/connection.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/staging/greybus/connection.h b/drivers/staging/greybus/connection.h index 53ce2845..f159239 100644 --- a/drivers/staging/greybus/connection.h +++ b/drivers/staging/greybus/connection.h @@ -80,6 +80,7 @@ int gb_connection_enable(struct gb_connection *connection); int gb_connection_enable_tx(struct gb_connection *connection); void gb_connection_disable_rx(struct gb_connection *connection); void gb_connection_disable(struct gb_connection *connection); +void gb_connection_disable_forced(struct gb_connection *connection); void greybus_data_rcvd(struct gb_host_device *hd, u16 cport_id, u8 *data, size_t length); |
