linux-kernel - [PATCH] mtd: spi-nor: Ensure operation completion before shutdown

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Message-Id: <20231012055148.2445303-1-quic_mdalam@quicinc.com>
Date:   Thu, 12 Oct 2023 11:21:48 +0530
From:   Md Sadre Alam <quic_mdalam@...cinc.com>
To:     tudor.ambarus@...aro.org, pratyush@...nel.org, michael@...le.cc,
        miquel.raynal@...tlin.com, richard@....at, vigneshr@...com,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     quic_srichara@...cinc.com, quic_varada@...cinc.com,
        Md Sadre Alam <quic_mdalam@...cinc.com>
Subject: [PATCH] mtd: spi-nor: Ensure operation completion before shutdown

Ensure that there are no pending spi operation inprogress
when system halts.

Signed-off-by: Md Sadre Alam <quic_mdalam@...cinc.com>
---
 drivers/mtd/spi-nor/core.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index 1c443fe568cf..adc4d2c68695 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -3690,6 +3690,9 @@ static void spi_nor_shutdown(struct spi_mem *spimem)
 {
 	struct spi_nor *nor = spi_mem_get_drvdata(spimem);
 
+	/* Ensure no pending spi operation in progress */
+	spi_nor_wait_till_ready(nor);
+
 	spi_nor_restore(nor);
 }
 
-- 
2.34.1