linux-kernel - Re: [PATCH v4 1/5] usb: host: export symbols for xhci-exynos to use xhci hooks

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Message-ID: <YmfBSLDiZGkvu3sG@kroah.com>
Date:   Tue, 26 Apr 2022 11:54:16 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Daehwan Jung <dh10.jung@...sung.com>
Cc:     Mathias Nyman <mathias.nyman@...el.com>,
        "open list:USB XHCI DRIVER" <linux-usb@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        Howard Yen <howardyen@...gle.com>,
        Jack Pham <jackp@...eaurora.org>,
        Puma Hsu <pumahsu@...gle.com>,
        "J . Avila" <elavila@...gle.com>, sc.suh@...sung.com,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Subject: Re: [PATCH v4 1/5] usb: host: export symbols for xhci-exynos to use
 xhci hooks

On Tue, Apr 26, 2022 at 06:18:44PM +0900, Daehwan Jung wrote:
> Export symbols for xhci hooks usage:
>     xhci_get_slot_ctx
>     xhci_get_endpoint_address
>     - Allow xhci hook to get ep_ctx from the xhci_container_ctx for
>       getting the ep_ctx information to know which ep is offloading and
>       comparing the context in remote subsystem memory if needed.
> 
>     xhci_ring_alloc
>     - Allow xhci hook to allocate vendor specific ring. Vendors could
>       alloc additional event ring.
> 
>     xhci_trb_virt_to_dma
>     - Used to retrieve the DMA address of vendor specific ring. Vendors
>       could get dequeue address of event ring.
> 
>     xhci_segment_free
>     xhci_link_segments
>     - Allow xhci hook to handle vendor specific segment. Vendors could
>       directly free or link segments of vendor specific ring.
> 
>     xhci_initialize_ring_info
>     - Allow xhci hook to initialize vendor specific ring.
> 
>     xhci_check_trb_in_td_math
>     - Allow xhci hook to Check TRB math for validation. Vendors could
>       check trb when allocating vendor specific ring.
> 
>     xhci_address_device
>     - Allow override to give configuration info to Co-processor.
> 
>     xhci_bus_suspend
>     xhci_bus_resume
>     - Allow override of suspend and resume for power scenario.
> 
>     xhci_remove_stream_mapping
>     - Allow to xhci hook to remove stream mapping. Vendors need to do it
>       when free-ing vendor specific ring if it's stream type.
> 

For the static functions that you are now exporting, they need to have
their functions declared in a .h file.  If not, you now get warnings
when you run sparse after applying this commit, right?

thanks,

greg k-h