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From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	Tudor Ambarus <Tudor.Ambarus@microchip.com>,
	<linux-mtd@lists.infradead.org>
Cc: Michal Simek <monstr@monstr.eu>,
	Boris Brezillon <boris.brezillon@collabora.com>,
	Naga Sureshkumar Relli <nagasure@xilinx.com>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	Miquel Raynal <miquel.raynal@bootlin.com>
Subject: [PATCH 6/8] mtd: rawnand: onfi: Simplify the NAND operations during detection
Date: Tue, 21 Apr 2020 18:46:35 +0200	[thread overview]
Message-ID: <20200421164637.8086-7-miquel.raynal@bootlin.com> (raw)
In-Reply-To: <20200421164637.8086-1-miquel.raynal@bootlin.com>

There is no need for separate parameter page reads, the delay penalty
is negligible so let's do read the three copies in one go.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 drivers/mtd/nand/raw/nand_onfi.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/mtd/nand/raw/nand_onfi.c b/drivers/mtd/nand/raw/nand_onfi.c
index d6124180b47b..b76772666b82 100644
--- a/drivers/mtd/nand/raw/nand_onfi.c
+++ b/drivers/mtd/nand/raw/nand_onfi.c
@@ -160,19 +160,13 @@ int nand_onfi_detect(struct nand_chip *chip)
 	if (!pbuf)
 		return -ENOMEM;
 
-	ret = nand_read_param_page_op(chip, 0, NULL, 0);
+	ret = nand_read_param_page_op(chip, 0, pbuf, 3 * sizeof(*pbuf));
 	if (ret) {
 		ret = 0;
 		goto free_onfi_param_page;
 	}
 
 	for (i = 0; i < 3; i++) {
-		ret = nand_read_data_op(chip, &pbuf[i], sizeof(*pbuf), true);
-		if (ret) {
-			ret = 0;
-			goto free_onfi_param_page;
-		}
-
 		crc = onfi_crc16(ONFI_CRC_BASE, (u8 *)&pbuf[i], 254);
 		if (crc == le16_to_cpu(pbuf[i].crc)) {
 			p = &pbuf[i];
-- 
2.20.1


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  parent reply	other threads:[~2020-04-21 16:48 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-21 16:46 [PATCH 0/8] Misc timing changes Miquel Raynal
2020-04-21 16:46 ` [PATCH 1/8] mtd: rawnand: timings: Add mode information to the timings structure Miquel Raynal
2020-04-22  6:36   ` Boris Brezillon
2020-04-21 16:46 ` [PATCH 2/8] mtd: rawnand: timings: Fix default tR_max and tCCS_min timings Miquel Raynal
2020-04-22  6:47   ` Boris Brezillon
2020-04-21 16:46 ` [PATCH 3/8] mtd: rawnand: onfi: Fix redundancy detection check Miquel Raynal
2020-04-22  6:49   ` Boris Brezillon
2020-04-21 16:46 ` [PATCH 4/8] mtd: rawnand: onfi: Use an intermediate variable to decomplefixy conditions Miquel Raynal
2020-04-22  6:51   ` Boris Brezillon
2020-04-21 16:46 ` [PATCH 5/8] mtd: rawnand: onfi: Avoid doing a copy of the parameter page Miquel Raynal
2020-04-22  6:54   ` Boris Brezillon
2020-04-21 16:46 ` Miquel Raynal [this message]
2020-04-22  7:00   ` [PATCH 6/8] mtd: rawnand: onfi: Simplify the NAND operations during detection Boris Brezillon
2020-04-22  7:25     ` Miquel Raynal
2020-04-21 16:46 ` [PATCH 7/8] mtd: rawnand: jedec: Use an intermediate variable to decomplefixy conditions Miquel Raynal
2020-04-22  7:02   ` Boris Brezillon
2020-04-22  8:49   ` Sergei Shtylyov
2020-04-22  9:33     ` Miquel Raynal
2020-04-21 16:46 ` [PATCH 8/8] mtd: rawnand: jedec: Simplify the NAND operations during detection Miquel Raynal
2020-04-22  7:05   ` Boris Brezillon

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