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mtd: rawnand: fsl_ifc: return errors for failed page reads

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commit f9a13e05a3 upstream.

fsl_ifc_run_command() logs controller timeout and other non-OPC
completion states in ctrl->nand_stat. fsl_ifc_read_page() then only
increments the ECC failure counter for non-OPC status and still returns
max_bitflips, which can be zero.

Return -ETIMEDOUT when the command did not complete at all and -EIO for
other non-OPC read completions so the NAND core does not treat a failed
page read as a clean page.

Fixes: 82771882d9 ("NAND Machine support for Integrated Flash Controller")
Cc: stable@vger.kernel.org
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Pengpeng Hou
2026-07-24 16:03:46 +02:00
committed by Greg Kroah-Hartman
parent 7ee7a77ec2
commit f3da9bc7c8
1 changed files with 8 additions and 1 deletions
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drivers/mtd/nand/raw/fsl_ifc_nand.c
+8 -1
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@@ -683,8 +683,15 @@ static int fsl_ifc_read_page(struct nand_chip *chip, uint8_t *buf,
return check_erased_page(chip, buf);
}
if (ctrl->nand_stat != IFC_NAND_EVTER_STAT_OPC)
if (!ctrl->nand_stat) {
mtd->ecc_stats.failed++;
return -ETIMEDOUT;
}
if (ctrl->nand_stat != IFC_NAND_EVTER_STAT_OPC) {
mtd->ecc_stats.failed++;
return -EIO;
}
return nctrl->max_bitflips;
}