On 09/07/15 19:04, Ashwin Chaugule wrote:
This change initializes the PCC Mailbox earlier than the ACPI processor driver. This enables drivers introduced in follow up patches (e.g. CPPC) to be probed via the ACPI processor driver interface. The CPPC probe requires the PCC channel to be initialized for it to query each CPUs performance capabilities.
Signed-off-by: Ashwin Chaugule ashwin.chaugule@linaro.org Reviewed-by: Al Stone al.stone@linaro.org
drivers/mailbox/pcc.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/mailbox/pcc.c b/drivers/mailbox/pcc.c index 7e91d68..fcda63e 100644 --- a/drivers/mailbox/pcc.c +++ b/drivers/mailbox/pcc.c @@ -352,4 +352,10 @@ static int __init pcc_init(void)
return 0; } -device_initcall(pcc_init);
+/*
- Make pcc init postcore so that users of this mailbox
- such as the ACPI Processor driver have it available
- at their init.
- */
+postcore_initcall(pcc_init);
I assumed you have explored other options like deferred probe and finally resorted to this as they are not feasible ? Because setting up these kind of dependency are prone to create issues later on.
Regards, Sudeep