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[v8,1/9] PCC: Initialize PCC Mailbox earlier at boot

Message ID ea93efa9429d1c59fd14cc51d1486ac013abd5ee.1438781668.git.ashwin.chaugule@linaro.org (mailing list archive)
State Accepted, archived
Delegated to: Rafael Wysocki
Headers show

Commit Message

Ashwin Chaugule Aug. 5, 2015, 1:40 p.m. UTC 
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(-)
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Patch

diff --git a/drivers/mailbox/pcc.c b/drivers/mailbox/pcc.c
index 26d121d..f814313 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);