From 561ae1d46a8ddcbc13162d5771f5ed6c8249e730 Mon Sep 17 00:00:00 2001
From: Sean Wang <sean.wang@mediatek.com>
Date: Thu, 2 Dec 2021 02:02:47 +0800
Subject: [PATCH] Bluetooth: btmtksdio: fix resume failure
Git-commit: 561ae1d46a8ddcbc13162d5771f5ed6c8249e730
Patch-mainline: v5.17-rc1
References: git-fixes
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>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/bluetooth/btmtksdio.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/bluetooth/btmtksdio.c
+++ b/drivers/bluetooth/btmtksdio.c
@@ -1042,6 +1042,8 @@ static int btmtksdio_runtime_suspend(str
if (!bdev)
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);