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greybus: interface: disable control connection on initialisation errors

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Disable the control connection immediately on any errors during
interface initialisation as there's no need to keep it around for an
interface in an error state.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Jeffrey Carlyle <jcarlyle@google.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Johan Hovold 2016-03-09 12:20:39 +01:00 committed by Greg Kroah-Hartman
parent 986d691108
commit 11548c8327
1 changed files with 11 additions and 4 deletions
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15
drivers/staging/greybus/interface.c
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@ -198,15 +198,20 @@ int gb_interface_init(struct gb_interface *intf)
size = gb_control_get_manifest_size_operation(intf);
if (size <= 0) {
dev_err(&intf->dev, "failed to get manifest size: %d\n", size);
if (size)
return size;
ret = size;
else
return -EINVAL;
ret = -EINVAL;
goto err_disable_control;
}
manifest = kmalloc(size, GFP_KERNEL);
if (!manifest)
return -ENOMEM;
if (!manifest) {
ret = -ENOMEM;
goto err_disable_control;
}
/* Get manifest using control protocol on CPort */
ret = gb_control_get_manifest_operation(intf, manifest, size);
@ -242,6 +247,8 @@ int gb_interface_init(struct gb_interface *intf)
gb_bundle_destroy(bundle);
err_free_manifest:
kfree(manifest);
err_disable_control:
gb_control_disable(intf->control);
return ret;
}