linux-kernel - [PATCH AUTOSEL 4.9 8/9] libertas: call into generic suspend code before turning off power

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Message-Id: <20181022102133.41222-8-sashal@kernel.org>
Date:   Mon, 22 Oct 2018 06:21:32 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     stable@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Daniel Mack <daniel@...que.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 4.9 8/9] libertas: call into generic suspend code before turning off power

From: Daniel Mack <daniel@...que.org>

[ Upstream commit 4f666675cdff0b986195413215eb062b7da6586f ]

When powering down a SDIO connected card during suspend, make sure to call
into the generic lbs_suspend() function before pulling the plug. This will
make sure the card is successfully deregistered from the system to avoid
communication to the card starving out.

Fixes: 7444a8092906 ("libertas: fix suspend and resume for SDIO connected cards")
Signed-off-by: Daniel Mack <daniel@...que.org>
Reviewed-by: Ulf Hansson <ulf.hansson@...aro.org>
Acked-by: Kalle Valo <kvalo@...eaurora.org>
Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/wireless/marvell/libertas/if_sdio.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/wireless/marvell/libertas/if_sdio.c b/drivers/net/wireless/marvell/libertas/if_sdio.c
index a0ae8d8763bb..06a57c708992 100644
--- a/drivers/net/wireless/marvell/libertas/if_sdio.c
+++ b/drivers/net/wireless/marvell/libertas/if_sdio.c
@@ -1368,6 +1368,10 @@ static int if_sdio_suspend(struct device *dev)
 	if (priv->wol_criteria == EHS_REMOVE_WAKEUP) {
 		dev_info(dev, "Suspend without wake params -- powering down card\n");
 		if (priv->fw_ready) {
+			ret = lbs_suspend(priv);
+			if (ret)
+				return ret;
+
 			priv->power_up_on_resume = true;
 			if_sdio_power_off(card);
 		}
-- 
2.17.1