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Message-ID: <07cd9db8ef295bfe3e6b42796ccb8c9fb59dd9ba.1637360076.git.objelf@gmail.com>
Date: Sat, 20 Nov 2021 06:25:44 +0800
From: <sean.wang@...iatek.com>
To: <marcel@...tmann.org>, <johan.hedberg@...il.com>
CC: <Mark-YW.Chen@...iatek.com>, <sean.wang@...iatek.com>,
<Soul.Huang@...iatek.com>, <YN.Chen@...iatek.com>,
<Leon.Yen@...iatek.com>, <Eric-SY.Chang@...iatek.com>,
<Deren.Wu@...iatek.com>, <km.lin@...iatek.com>,
<robin.chiu@...iatek.com>, <Eddie.Chen@...iatek.com>,
<ch.yeh@...iatek.com>, <posh.sun@...iatek.com>,
<ted.huang@...iatek.com>, <Eric.Liang@...iatek.com>,
<Stella.Chang@...iatek.com>, <Tom.Chou@...iatek.com>,
<steve.lee@...iatek.com>, <jsiuda@...gle.com>,
<frankgor@...gle.com>, <jemele@...gle.com>,
<abhishekpandit@...gle.com>, <michaelfsun@...gle.com>,
<mcchou@...omium.org>, <shawnku@...gle.com>,
<linux-bluetooth@...r.kernel.org>,
<linux-mediatek@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>,
Mark-yw Chen <mark-yw.chen@...iatek.com>
Subject: [PATCH 2/4] Bluetooth: btmtksdio: handle runtime pm only when sdio_func is available
From: Sean Wang <sean.wang@...iatek.com>
Runtime pm ops is not aware the sdio_func status that is probably
being disabled by btmtksdio_close. Thus, we are only able to access the
sdio_func for the runtime pm operations only when the sdio_func is
available.
Fixes: 7f3c563c575e7 ("Bluetooth: btmtksdio: Add runtime PM support to SDIO based Bluetooth")
Co-developed-by: Mark-yw Chen <mark-yw.chen@...iatek.com>
Signed-off-by: Mark-yw Chen <mark-yw.chen@...iatek.com>
Signed-off-by: Sean Wang <sean.wang@...iatek.com>
---
drivers/bluetooth/btmtksdio.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c
index 4f3412ad8fca..4c46c62e4623 100644
--- a/drivers/bluetooth/btmtksdio.c
+++ b/drivers/bluetooth/btmtksdio.c
@@ -1037,6 +1037,9 @@ static int btmtksdio_runtime_suspend(struct device *dev)
if (!bdev)
return 0;
+ if (!test_bit(HCI_RUNNING, &bdev->hdev->flags))
+ return 0;
+
sdio_claim_host(bdev->func);
sdio_writel(bdev->func, C_FW_OWN_REQ_SET, MTK_REG_CHLPCR, &err);
@@ -1064,6 +1067,9 @@ static int btmtksdio_runtime_resume(struct device *dev)
if (!bdev)
return 0;
+ if (!test_bit(HCI_RUNNING, &bdev->hdev->flags))
+ return 0;
+
sdio_claim_host(bdev->func);
sdio_writel(bdev->func, C_FW_OWN_REQ_CLR, MTK_REG_CHLPCR, &err);
--
2.25.1
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