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>

diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
index 62f4b07..1007ac3 100644 (file)
--- 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;
 }