Loading drivers/mtd/devices/msm_qpic_nand.c +39 −0 Original line number Diff line number Diff line Loading @@ -1618,6 +1618,7 @@ static int msm_nand_read_oob(struct mtd_info *mtd, loff_t from, struct sps_iovec *iovec; struct sps_iovec iovec_temp; bool erased_page; uint64_t fix_data_in_pages = 0; /* * The following 6 commands will be sent only once for the first Loading Loading @@ -1839,6 +1840,20 @@ static int msm_nand_read_oob(struct mtd_info *mtd, loff_t from, } } } if (rawerr && !pageerr && erased_page) { /* * This means an erased page had bit flips and now * those bit-flips need to be cleared in the data * being sent to upper layers. This will keep track * of those pages and at the end, the data will be * fixed before this function returns. * Note that a whole page worth of data will be fixed * and this will only handle about 64 pages being read * at a time i.e. one erase block worth of pages. */ fix_data_in_pages |= BIT(rw_params.page_count); } /* check for correctable errors */ if (!rawerr) { for (n = rw_params.start_sector; n < cwperpage; n++) { Loading Loading @@ -1898,6 +1913,30 @@ free_dma: if (ops->datbuf) dma_unmap_page(chip->dev, rw_params.data_dma_addr, ops->len, DMA_BIDIRECTIONAL); /* * If there were any erased pages detected with ECC errors, then * it is most likely that the data is not all 0xff. So memset that * page to all 0xff. */ while (fix_data_in_pages) { int temp_page = 0, oobsize = rw_params.cwperpage << 2; int count = 0, offset = 0; temp_page = fix_data_in_pages & BIT_MASK(0); fix_data_in_pages = fix_data_in_pages >> 1; count++; if (!temp_page) continue; offset = (count - 1) * mtd->writesize; if (ops->datbuf) memset((ops->datbuf + offset), 0xff, mtd->writesize); offset = (count - 1) * oobsize; if (ops->oobbuf) memset(ops->oobbuf + offset, 0xff, oobsize); } validate_mtd_params_failed: if (ops->mode != MTD_OPS_RAW) ops->retlen = mtd->writesize * pages_read; Loading Loading
drivers/mtd/devices/msm_qpic_nand.c +39 −0 Original line number Diff line number Diff line Loading @@ -1618,6 +1618,7 @@ static int msm_nand_read_oob(struct mtd_info *mtd, loff_t from, struct sps_iovec *iovec; struct sps_iovec iovec_temp; bool erased_page; uint64_t fix_data_in_pages = 0; /* * The following 6 commands will be sent only once for the first Loading Loading @@ -1839,6 +1840,20 @@ static int msm_nand_read_oob(struct mtd_info *mtd, loff_t from, } } } if (rawerr && !pageerr && erased_page) { /* * This means an erased page had bit flips and now * those bit-flips need to be cleared in the data * being sent to upper layers. This will keep track * of those pages and at the end, the data will be * fixed before this function returns. * Note that a whole page worth of data will be fixed * and this will only handle about 64 pages being read * at a time i.e. one erase block worth of pages. */ fix_data_in_pages |= BIT(rw_params.page_count); } /* check for correctable errors */ if (!rawerr) { for (n = rw_params.start_sector; n < cwperpage; n++) { Loading Loading @@ -1898,6 +1913,30 @@ free_dma: if (ops->datbuf) dma_unmap_page(chip->dev, rw_params.data_dma_addr, ops->len, DMA_BIDIRECTIONAL); /* * If there were any erased pages detected with ECC errors, then * it is most likely that the data is not all 0xff. So memset that * page to all 0xff. */ while (fix_data_in_pages) { int temp_page = 0, oobsize = rw_params.cwperpage << 2; int count = 0, offset = 0; temp_page = fix_data_in_pages & BIT_MASK(0); fix_data_in_pages = fix_data_in_pages >> 1; count++; if (!temp_page) continue; offset = (count - 1) * mtd->writesize; if (ops->datbuf) memset((ops->datbuf + offset), 0xff, mtd->writesize); offset = (count - 1) * oobsize; if (ops->oobbuf) memset(ops->oobbuf + offset, 0xff, oobsize); } validate_mtd_params_failed: if (ops->mode != MTD_OPS_RAW) ops->retlen = mtd->writesize * pages_read; Loading
