Re: [PATCH] drivercore: Add driver probe deferral mechanism
From: Grant Likely
Date: Mon Mar 05 2012 - 17:09:45 EST
On Mon, Mar 5, 2012 at 2:47 PM, Greg Kroah-Hartman
<gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> On Mon, Mar 05, 2012 at 08:47:41AM -0700, Grant Likely wrote:
>> --- a/include/linux/device.h
>> +++ b/include/linux/device.h
>> @@ -587,6 +587,10 @@ struct device_dma_parameters {
>> * @mutex: Mutex to synchronize calls to its driver.
>> * @bus: Type of bus device is on.
>> * @driver: Which driver has allocated this
>> + * @deferred_probe: entry in deferred_probe_list which is used to retry the
>> + * binding of drivers which were unable to get all the resources
>> + * needed by the device; typically because it depends on another
>> + * driver getting probed first.
>> * @platform_data: Platform data specific to the device.
>> * Example: For devices on custom boards, as typical of embedded
>> * and SOC based hardware, Linux often uses platform_data to point
>> @@ -646,6 +650,7 @@ struct device {
>> struct bus_type *bus; /* type of bus device is on */
>> struct device_driver *driver; /* which driver has allocated this
>> device */
>> + struct list_head deferred_probe;
>> void *platform_data; /* Platform specific data, device
>> core doesn't touch it */
>> struct dev_pm_info power;
>
> This can go into the "struct device_private" structure instead, right?
> That would be better to ensure that no non-driver-core code ever touches
> this thing.
I don't see any reason why not. I'll make the change and repost.
g.
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