linux-kernel - [PATCH V2 1/2] mmc: core: Introduce new flag to force hardware reset

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Message-Id: <20250514111155.10896-2-quic_sartgarg@quicinc.com>
Date: Wed, 14 May 2025 16:41:54 +0530
From: Sarthak Garg <quic_sartgarg@...cinc.com>
To: Ulf Hansson <ulf.hansson@...aro.org>,
        Adrian Hunter <adrian.hunter@...el.com>
Cc: linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, quic_cang@...cinc.com,
        quic_nguyenb@...cinc.com, quic_rampraka@...cinc.com,
        quic_pragalla@...cinc.com, quic_sayalil@...cinc.com,
        quic_nitirawa@...cinc.com, quic_bhaskarv@...cinc.com,
        Sarthak Garg <quic_sartgarg@...cinc.com>
Subject: [PATCH V2 1/2] mmc: core: Introduce new flag to force hardware reset

Introduce new flag cqe_recovery_reset_always to allow vendors to force
hardware reset during cqe recovery.

Signed-off-by: Sarthak Garg <quic_sartgarg@...cinc.com>
Acked-by: Adrian Hunter <adrian.hunter@...el.com>
---
 drivers/mmc/core/block.c | 2 +-
 include/linux/mmc/host.h | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index 585c2b274d98..dce2fb762260 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -1622,7 +1622,7 @@ void mmc_blk_cqe_recovery(struct mmc_queue *mq)
 	pr_debug("%s: CQE recovery start\n", mmc_hostname(host));
 
 	err = mmc_cqe_recovery(host);
-	if (err)
+	if (err || host->cqe_recovery_reset_always)
 		mmc_blk_reset(mq->blkdata, host, MMC_BLK_CQE_RECOVERY);
 	mmc_blk_reset_success(mq->blkdata, MMC_BLK_CQE_RECOVERY);
 
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 68f09a955a90..d686adf75293 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -554,6 +554,7 @@ struct mmc_host {
 	int			cqe_qdepth;
 	bool			cqe_enabled;
 	bool			cqe_on;
+	bool			cqe_recovery_reset_always;
 
 	/* Inline encryption support */
 #ifdef CONFIG_MMC_CRYPTO
-- 
2.17.1