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[3/4] Bluetooth: btmtksdio: fix resume failure

Message ID 8a0a4db81b6aede029701cd4db734aaf9bd37ee7.1637360076.git.objelf@gmail.com
State New
Headers show
Series [1/4] Bluetooth: btmtksdio: drop the unnecessary variable created | expand

Commit Message

Sean Wang Nov. 19, 2021, 10:25 p.m. UTC 
From: Sean Wang <sean.wang@mediatek.com>

btmtksdio have to rely on MMC_PM_KEEP_POWER in pm_flags to avoid that
SDIO power is being shut off during the device is in suspend. That fixes
the SDIO command fails to access the bus after the device is resumed.

Fixes: 7f3c563c575e7 ("Bluetooth: btmtksdio: Add runtime PM support to SDIO based Bluetooth")
Co-developed-by: Mark-yw Chen <mark-yw.chen@mediatek.com>
Signed-off-by: Mark-yw Chen <mark-yw.chen@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
---
 drivers/bluetooth/btmtksdio.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c
index 4c46c62e4623..cae1fcd15512 100644
--- a/drivers/bluetooth/btmtksdio.c
+++ b/drivers/bluetooth/btmtksdio.c
@@ -1040,6 +1040,8 @@  static int btmtksdio_runtime_suspend(struct device *dev)
 	if (!test_bit(HCI_RUNNING, &bdev->hdev->flags))
 		return 0;
 
+	sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
+
 	sdio_claim_host(bdev->func);
 
 	sdio_writel(bdev->func, C_FW_OWN_REQ_SET, MTK_REG_CHLPCR, &err);