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[PATCH] ACPI: CPPC: Support PCC with interrupt flag

Started byHoan Tran <hotran@apm.com>
First post2016-07-21 23:10 +0200
Last post2016-07-21 23:10 +0200
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  [PATCH] ACPI: CPPC: Support PCC with interrupt flag Hoan Tran <hotran@apm.com> - 2016-07-21 23:10 +0200

#1448144 — [PATCH] ACPI: CPPC: Support PCC with interrupt flag

FromHoan Tran <hotran@apm.com>
Date2016-07-21 23:10 +0200
Subject[PATCH] ACPI: CPPC: Support PCC with interrupt flag
Message-ID<rXtoe-4vY-17@gated-at.bofh.it>
For PCC mailbox with interrupt flag, CPPC should call mbox_chan_txdone()
function to notify the mailbox framework about TX completion.

Signed-off-by: Hoan Tran <hotran@apm.com>
---
This patch is tested on top and depends on patch[1]:
[1] http://www.spinics.net/lists/linux-acpi/msg66041.html
 - [PATCH v3] mailbox: pcc: Support HW-Reduced Communication Subspace type 2

 drivers/acpi/cppc_acpi.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index 2e98173..19606aa 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -191,7 +191,11 @@ static int send_pcc_cmd(u16 cmd)
 			last_cmd_cmpl_time = ktime_get();
 	}
 
-	mbox_client_txdone(pcc_channel, ret);
+	if (pcc_channel->mbox->txdone_irq)
+		mbox_chan_txdone(pcc_channel, ret);
+	else
+		mbox_client_txdone(pcc_channel, ret);
+
 	return ret;
 }
 
-- 
1.9.1

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