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mediatek: mtk-snand: check request size against chip info

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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 <gch981213@gmail.com>
This commit is contained in:
Chuanhong Guo 2021-08-24 00:31:17 +08:00
parent b600aee3ed
commit 388127abd1
1 changed files with 13 additions and 9 deletions
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22
target/linux/mediatek/files-5.10/drivers/mtd/mtk-snand/mtk-snand-mtd.c
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@ -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;