d0679cfaf5
When CONFIG_PCC is disabled, pcc_mbox_request_channel() needs to return ERR_PTR(-ENODEV), not a NULL pointer, as the callers of this function use IS_ERR() to check for error code. Signed-off-by: Duc Dang <dhdang@apm.com> Signed-off-by: Hoan Tran <hotran@apm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
30 lines
786 B
C
30 lines
786 B
C
/*
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* PCC (Platform Communications Channel) methods
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; version 2
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* of the License.
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*/
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#ifndef _PCC_H
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#define _PCC_H
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#include <linux/mailbox_controller.h>
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#include <linux/mailbox_client.h>
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#ifdef CONFIG_PCC
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extern struct mbox_chan *pcc_mbox_request_channel(struct mbox_client *cl,
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int subspace_id);
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extern void pcc_mbox_free_channel(struct mbox_chan *chan);
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#else
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static inline struct mbox_chan *pcc_mbox_request_channel(struct mbox_client *cl,
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int subspace_id)
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{
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return ERR_PTR(-ENODEV);
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}
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static inline void pcc_mbox_free_channel(struct mbox_chan *chan) { }
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#endif
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#endif /* _PCC_H */
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