From: Sascha Hauer <s.hauer@pengutronix.de>
To: linux-mtd@lists.infradead.org
Cc: kernel@pengutronix.de, Boris Brezillon <bbrezillon@kernel.org>,
Richard Weinberger <richard@nod.at>,
Sascha Hauer <s.hauer@pengutronix.de>,
Vinod Koul <vkoul@kernel.org>, NXP Linux Team <linux-imx@nxp.com>,
Fabio Estevam <festevam@gmail.com>,
Miquel Raynal <miquel.raynal@bootlin.com>,
Han Xu <han.xu@nxp.com>, Shawn Guo <shawnguo@kernel.org>
Subject: [PATCH 08/14] mtd: rawnand: gpmi: Drop unnecessary restoring of previous chipselection
Date: Tue, 9 Apr 2019 13:34:15 +0200 [thread overview]
Message-ID: <20190409113421.3037-9-s.hauer@pengutronix.de> (raw)
In-Reply-To: <20190409113421.3037-1-s.hauer@pengutronix.de>
The i.MX23 specific option read code is called right after nand_scan. We
can rely on the nand core having disabled the chipselect, so there's no
point in restoring the original chipselect after nand operations. Drop
it.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c | 16 ++--------------
1 file changed, 2 insertions(+), 14 deletions(-)
diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
index c1d2e6d12e61..bbf9e6a878b8 100644
--- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
@@ -2526,13 +2526,11 @@ static int mx23_check_transcription_stamp(struct gpmi_nand_data *this)
unsigned int stride;
unsigned int page;
uint8_t *buffer = chip->data_buf;
- int saved_chip_number;
int found_an_ncb_fingerprint = false;
/* Compute the number of strides in a search area. */
search_area_size_in_strides = 1 << rom_geo->search_area_stride_exponent;
- saved_chip_number = this->current_chip;
nand_select_target(chip, 0);
/*
@@ -2560,10 +2558,7 @@ static int mx23_check_transcription_stamp(struct gpmi_nand_data *this)
}
- if (saved_chip_number >= 0)
- nand_select_target(chip, saved_chip_number);
- else
- nand_deselect_target(chip);
+ nand_deselect_target(chip);
if (found_an_ncb_fingerprint)
dev_dbg(dev, "\tFound a fingerprint\n");
@@ -2587,7 +2582,6 @@ static int mx23_write_transcription_stamp(struct gpmi_nand_data *this)
unsigned int stride;
unsigned int page;
uint8_t *buffer = chip->data_buf;
- int saved_chip_number;
int status;
/* Compute the search area geometry. */
@@ -2604,8 +2598,6 @@ static int mx23_write_transcription_stamp(struct gpmi_nand_data *this)
dev_dbg(dev, "\tin Strides: %u\n", search_area_size_in_strides);
dev_dbg(dev, "\tin Pages : %u\n", search_area_size_in_pages);
- /* Select chip 0. */
- saved_chip_number = this->current_chip;
nand_select_target(chip, 0);
/* Loop over blocks in the first search area, erasing them. */
@@ -2637,11 +2629,7 @@ static int mx23_write_transcription_stamp(struct gpmi_nand_data *this)
dev_err(dev, "[%s] Write failed.\n", __func__);
}
- /* Deselect chip 0. */
- if (saved_chip_number >= 0)
- nand_select_target(chip, saved_chip_number);
- else
- nand_deselect_target(chip);
+ nand_deselect_target(chip);
return 0;
}
--
2.20.1
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next prev parent reply other threads:[~2019-04-09 11:34 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-09 11:34 [PATCH v2 00/14] Implement exec_op for GPMI nand driver Sascha Hauer
2019-04-09 11:34 ` [PATCH 01/14] mtd: rawnand: export nand operation tracer Sascha Hauer
2019-04-17 10:22 ` Miquel Raynal
2019-04-09 11:34 ` [PATCH 02/14] mtd: rawnand: fsmc: Use nand_op_trace for operation tracing Sascha Hauer
2019-04-17 10:22 ` Miquel Raynal
2019-04-09 11:34 ` [PATCH 03/14] mtd: rawnand: gpmi: move all driver code into single file Sascha Hauer
2019-04-17 10:23 ` Miquel Raynal
2019-04-09 11:34 ` [PATCH 04/14] mtd: rawnand: gpmi: remove unused variable Sascha Hauer
2019-04-17 10:24 ` Miquel Raynal
2019-04-09 11:34 ` [PATCH 05/14] mtd: rawnand: gpmi: Remove unnecessary variables Sascha Hauer
2019-04-17 10:24 ` Miquel Raynal
2019-04-09 11:34 ` [PATCH 06/14] mtd: rawnand: gpmi: read buf in nand_read_page_op Sascha Hauer
2019-04-17 10:25 ` Miquel Raynal
2019-04-09 11:34 ` [PATCH 07/14] mtd: rawnand: gpmi: remove unused parameters Sascha Hauer
2019-04-17 10:26 ` Miquel Raynal
2019-04-09 11:34 ` Sascha Hauer [this message]
2019-04-17 10:27 ` [PATCH 08/14] mtd: rawnand: gpmi: Drop unnecessary restoring of previous chipselection Miquel Raynal
2019-04-09 11:34 ` [PATCH 09/14] mtd: rawnand: gpmi: use runtime PM to manage clocks Sascha Hauer
2019-04-17 10:28 ` Miquel Raynal
2019-04-09 11:34 ` [PATCH 10/14] dma: mxs: Drop unnecessary flag Sascha Hauer
2019-04-17 8:16 ` Miquel Raynal
2019-04-23 5:21 ` Vinod Koul
2019-04-23 5:22 ` Vinod Koul
2019-04-09 11:34 ` [PATCH 11/14] mtd: rawnand: gpmi: drop " Sascha Hauer
2019-04-17 10:28 ` Miquel Raynal
2019-04-09 11:34 ` [PATCH 12/14] dma: mxs: Add header file to be shared with gpmi nand driver Sascha Hauer
2019-04-23 5:24 ` Vinod Koul
2019-04-09 11:34 ` [PATCH 13/14] dma: mxs: rename custom flag Sascha Hauer
2019-04-23 5:25 ` Vinod Koul
2019-04-09 11:34 ` [PATCH 14/14] mtd: rawnand: gpmi: Implement exec_op Sascha Hauer
2019-04-17 10:33 ` Miquel Raynal
2019-04-24 7:09 ` Sascha Hauer
2019-04-29 7:23 ` Miquel Raynal
2019-04-25 12:56 [PATCH v3 00/14] Implement exec_op for GPMI nand driver Sascha Hauer
2019-04-25 12:56 ` [PATCH 08/14] mtd: rawnand: gpmi: Drop unnecessary restoring of previous chipselection Sascha Hauer
2019-05-21 7:06 [PATCH v4 00/14] Implement exec_op for GPMI nand driver Sascha Hauer
2019-05-21 7:06 ` [PATCH 08/14] mtd: rawnand: gpmi: Drop unnecessary restoring of previous chipselection Sascha Hauer
2019-06-03 8:03 ` Miquel Raynal
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