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authorSascha Hauer <s.hauer@pengutronix.de>2019-05-21 09:06:37 +0200
committerMiquel Raynal <miquel.raynal@bootlin.com>2019-06-27 20:05:28 +0200
commit1ee514d00d64678be30b6ce2d5daa49965b9ee2b (patch)
treea30703c6ddabfe328e945374947fb6b2830c45ae /drivers/mtd
parentad8b4f1454ad2c7509bc8bf8930bead59619d117 (diff)
downloadlinux-1ee514d00d64678be30b6ce2d5daa49965b9ee2b.tar.bz2
mtd: rawnand: gpmi: Drop unnecessary restoring of previous chipselection
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>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c16
1 files 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 62f4b0780a7a..1007ac3a2909 100644
--- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
@@ -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;
}