linux-kernel - [PATCH 04/10] mtd: rawnand: qcom: Fix the opcode check in qcom_check

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Message-Id: <20230805174146.57006-5-manivannan.sadhasivam@linaro.org>
Date:   Sat,  5 Aug 2023 23:11:40 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     miquel.raynal@...tlin.com, vigneshr@...com
Cc:     richard@....at, linux-mtd@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        quic_mdalam@...cinc.com, quic_srichara@...cinc.com,
        dan.carpenter@...aro.org,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        kernel test robot <lkp@...el.com>
Subject: [PATCH 04/10] mtd: rawnand: qcom: Fix the opcode check in qcom_check_op()

qcom_check_op() function checks for the invalid opcode for the instruction
types. Currently, it just returns -ENOTSUPP for all opcodes of
NAND_OP_CMD_INSTR type due to the use of "||" operator instead of "&&".
Fix it!

This also fixes the following smatch warning:

drivers/mtd/nand/raw/qcom_nandc.c:3036 qcom_check_op() warn: was && intended here instead of ||?

Reported-by: kernel test robot <lkp@...el.com>
Reported-by: Dan Carpenter <dan.carpenter@...aro.org>
Closes: https://lore.kernel.org/r/202308032022.SnXkKyFs-lkp@intel.com/
Fixes: 89550beb098e ("mtd: rawnand: qcom: Implement exec_op()")
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
 drivers/mtd/nand/raw/qcom_nandc.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/mtd/nand/raw/qcom_nandc.c b/drivers/mtd/nand/raw/qcom_nandc.c
index 4957e9253878..29fcdac932f1 100644
--- a/drivers/mtd/nand/raw/qcom_nandc.c
+++ b/drivers/mtd/nand/raw/qcom_nandc.c
@@ -3033,12 +3033,12 @@ static int qcom_check_op(struct nand_chip *chip,
 
 		switch (instr->type) {
 		case NAND_OP_CMD_INSTR:
-			if (instr->ctx.cmd.opcode != NAND_CMD_RESET ||
-			    instr->ctx.cmd.opcode != NAND_CMD_READID ||
-			    instr->ctx.cmd.opcode != NAND_CMD_PARAM ||
-			    instr->ctx.cmd.opcode != NAND_CMD_ERASE1 ||
-			    instr->ctx.cmd.opcode != NAND_CMD_ERASE2 ||
-			    instr->ctx.cmd.opcode != NAND_CMD_STATUS ||
+			if (instr->ctx.cmd.opcode != NAND_CMD_RESET  &&
+			    instr->ctx.cmd.opcode != NAND_CMD_READID &&
+			    instr->ctx.cmd.opcode != NAND_CMD_PARAM  &&
+			    instr->ctx.cmd.opcode != NAND_CMD_ERASE1 &&
+			    instr->ctx.cmd.opcode != NAND_CMD_ERASE2 &&
+			    instr->ctx.cmd.opcode != NAND_CMD_STATUS &&
 			    instr->ctx.cmd.opcode != NAND_CMD_PAGEPROG)
 				return -ENOTSUPP;
 			break;
-- 
2.25.1