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Commit 943a8cbb authored by Sarthak Garg's avatar Sarthak Garg Committed by Gerrit - the friendly Code Review server
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mmc: sdhci-msm: Fix NULL pointer dereference while DLL init 



Fix NULL pointer dereference while DLL initialization if sdhci_host
resumes before the allocation of mmc card structure.

Change-Id: Id447bca5a8a1e2597a3cbfb84b83753c02076a54
Signed-off-by: default avatarSarthak Garg <sartgarg@codeaurora.org>
parent b776547b

drivers/mmc/host/sdhci-msm.c

+3 −2
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2012-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2012-2020, The Linux Foundation. All rights reserved.

 *

 * drivers/mmc/host/sdhci-msm.c - Qualcomm Technologies, Inc. MSM SDHCI Platform

 * driver source file
@@ -866,7 +866,8 @@ static int msm_init_cm_dll(struct sdhci_host *host, 
			msm_host_offset->CORE_DLL_CONFIG);



	/* For hs400es mode, no need to wait for core dll lock */

	if (!(msm_host->enhanced_strobe &&

	if (msm_host->mmc->card

			&& !(msm_host->enhanced_strobe &&

				mmc_card_strobe(msm_host->mmc->card))) {

		wait_cnt = 50;

		/* Wait until DLL_LOCK bit of DLL_STATUS register becomes '1' */