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Bluetooth: btmtksdio: fix resume failure

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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: 7f3c563c57 ("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>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Sean Wang 2021-12-02 02:02:47 +08:00 committed by Marcel Holtmann
parent 4b4b2228f5
commit 561ae1d46a
1 changed files with 2 additions and 0 deletions
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2
drivers/bluetooth/btmtksdio.c
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@ -1065,6 +1065,8 @@ static int btmtksdio_runtime_suspend(struct device *dev)
if (!test_bit(BTMTKSDIO_FUNC_ENABLED, &bdev->tx_state))
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);