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 <hot...@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
