From 45ac83d2d8bd7fce1f9ac7157f9e149b052faec6 Mon Sep 17 00:00:00 2001 From: Chuanhong Guo Date: Tue, 24 Aug 2021 00:31:17 +0800 Subject: [PATCH] mediatek: mtk-snand: check request size against chip info mtd->size will be overrided by BMT which makes all mtd requests made by bmt fail in request size checking. this commit changes the driver to check against actual chip size in chip info as a workaround. Signed-off-by: Chuanhong Guo --- .../drivers/mtd/mtk-snand/mtk-snand-mtd.c | 22 +++++++++++-------- 1 file changed, 13 insertions(+), 9 deletions(-) diff --git a/target/linux/mediatek/files-5.10/drivers/mtd/mtk-snand/mtk-snand-mtd.c b/target/linux/mediatek/files-5.10/drivers/mtd/mtk-snand/mtk-snand-mtd.c index b0fcda446d..7e5baf0369 100644 --- a/target/linux/mediatek/files-5.10/drivers/mtd/mtk-snand/mtk-snand-mtd.c +++ b/target/linux/mediatek/files-5.10/drivers/mtd/mtk-snand/mtk-snand-mtd.c @@ -57,7 +57,7 @@ static int mtk_snand_mtd_erase(struct mtd_info *mtd, struct erase_info *instr) int ret; /* Do not allow write past end of device */ - if ((instr->addr + instr->len) > mtd->size) { + if ((instr->addr + instr->len) > msm->cinfo.chipsize) { dev_err(msm->pdev.dev, "attempt to erase beyond end of device\n"); return -EINVAL; @@ -194,7 +194,7 @@ static int mtk_snand_mtd_read_oob(struct mtd_info *mtd, loff_t from, maxooblen = mtd_oobavail(mtd, ops); /* Do not allow read past end of device */ - if (ops->datbuf && (from + ops->len) > mtd->size) { + if (ops->datbuf && (from + ops->len) > msm->cinfo.chipsize) { dev_err(msm->pdev.dev, "attempt to read beyond end of device\n"); return -EINVAL; @@ -205,9 +205,11 @@ static int mtk_snand_mtd_read_oob(struct mtd_info *mtd, loff_t from, return -EINVAL; } - if (unlikely(from >= mtd->size || - ops->ooboffs + ops->ooblen > ((mtd->size >> mtd->writesize_shift) - - (from >> mtd->writesize_shift)) * maxooblen)) { + if (unlikely(from >= msm->cinfo.chipsize || + ops->ooboffs + ops->ooblen > + ((msm->cinfo.chipsize >> mtd->writesize_shift) - + (from >> mtd->writesize_shift)) * + maxooblen)) { dev_err(msm->pdev.dev, "attempt to read beyond end of device\n"); return -EINVAL; @@ -321,7 +323,7 @@ static int mtk_snand_mtd_write_oob(struct mtd_info *mtd, loff_t to, maxooblen = mtd_oobavail(mtd, ops); /* Do not allow write past end of device */ - if (ops->datbuf && (to + ops->len) > mtd->size) { + if (ops->datbuf && (to + ops->len) > msm->cinfo.chipsize) { dev_err(msm->pdev.dev, "attempt to write beyond end of device\n"); return -EINVAL; @@ -333,9 +335,11 @@ static int mtk_snand_mtd_write_oob(struct mtd_info *mtd, loff_t to, return -EINVAL; } - if (unlikely(to >= mtd->size || - ops->ooboffs + ops->ooblen > ((mtd->size >> mtd->writesize_shift) - - (to >> mtd->writesize_shift)) * maxooblen)) { + if (unlikely(to >= msm->cinfo.chipsize || + ops->ooboffs + ops->ooblen > + ((msm->cinfo.chipsize >> mtd->writesize_shift) - + (to >> mtd->writesize_shift)) * + maxooblen)) { dev_err(msm->pdev.dev, "attempt to write beyond end of device\n"); return -EINVAL;