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mtd: rawnand: gpmi: Drop unnecessary restoring of previous chipselection

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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 chip select after NAND operations. Drop
it.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
This commit is contained in:
Sascha Hauer 2019-05-21 09:06:37 +02:00 committed by Miquel Raynal
parent ad8b4f1454
commit 1ee514d00d
1 changed files with 2 additions and 14 deletions
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16
drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
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@ -2532,14 +2532,12 @@ static int mx23_check_transcription_stamp(struct gpmi_nand_data *this)
unsigned int stride;
unsigned int page;
u8 *buffer = nand_get_data_buf(chip);
int saved_chip_number;
int found_an_ncb_fingerprint = false;
int ret;
/* 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);
/*
@ -2570,10 +2568,7 @@ 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");
@ -2597,7 +2592,6 @@ static int mx23_write_transcription_stamp(struct gpmi_nand_data *this)
unsigned int stride;
unsigned int page;
u8 *buffer = nand_get_data_buf(chip);
int saved_chip_number;
int status;
/* Compute the search area geometry. */
@ -2614,8 +2608,6 @@ 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. */
@ -2647,11 +2639,7 @@ 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;
}