Re: [PATCH 3/4] Bluetooth: btmtksdio: fix resume failure
From: Marcel Holtmann <marcel@holtmann.org>
Date: 2021-11-24 15:21:10
Also in:
linux-bluetooth, lkml
Hi Sean,
quoted hunk ↗ jump to hunk
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 <redacted> Signed-off-by: Mark-yw Chen <redacted> Signed-off-by: Sean Wang <sean.wang@mediatek.com> --- drivers/bluetooth/btmtksdio.c | 2 ++ 1 file changed, 2 insertions(+)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);
if this makes sense without 2/4 patch, then please re-send. Regards Marcel _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek