linux-kernel - [PATCH 2/3] mtd: rawnand: qcom: Clear buf_count and buf

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Date:   Fri, 18 Aug 2023 20:21:00 +0530
From:   Md Sadre Alam <quic_mdalam@...cinc.com>
To:     mani@...nel.org, miquel.raynal@...tlin.com, richard@....at,
        vigneshr@...com, linux-mtd@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     quic_mdalam@...cinc.com, quic_srichara@...cinc.com
Subject: [PATCH 2/3] mtd: rawnand: qcom: Clear buf_count and buf_start in raw read

Initialize buf_count and buf_start to 0 before starting the
raw read. If we will not initialize then read staus will get
updated with wrong value and we will see failure for even
successful raw read transaction.

Signed-off-by: Sricharan Ramabadhran <quic_srichara@...cinc.com>
Signed-off-by: Md Sadre Alam <quic_mdalam@...cinc.com>
---
 drivers/mtd/nand/raw/qcom_nandc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mtd/nand/raw/qcom_nandc.c b/drivers/mtd/nand/raw/qcom_nandc.c
index 413e214c8e87..73dd1b4e4e31 100644
--- a/drivers/mtd/nand/raw/qcom_nandc.c
+++ b/drivers/mtd/nand/raw/qcom_nandc.c
@@ -1471,6 +1471,9 @@ qcom_nandc_read_cw_raw(struct mtd_info *mtd, struct nand_chip *chip,
 	int raw_cw = cw;
 
 	nand_read_page_op(chip, page, 0, NULL, 0);
+	nandc->buf_count = 0;
+	nandc->buf_start = 0;
+	clear_read_regs(nandc);
 	host->use_ecc = false;
 
 	if (nandc->props->qpic_v2)
-- 
2.17.1