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drivers/mrd_spi_nor: fix read spanning pages

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This commit is contained in:
Vincent Dupont 2019-02-28 16:57:27 +01:00
parent 49358e2763
commit c077c07017
1 changed files with 0 additions and 8 deletions
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8
drivers/mtd_spi_nor/mtd_spi_nor.c
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@ -420,17 +420,9 @@ static int mtd_spi_nor_read(mtd_dev_t *mtd, void *dest, uint32_t addr, uint32_t
if (addr > chipsize) { if (addr > chipsize) {
return -EOVERFLOW; return -EOVERFLOW;
} }
if (size > mtd->page_size) {
size = mtd->page_size;
}
if ((addr + size) > chipsize) { if ((addr + size) > chipsize) {
size = chipsize - addr; size = chipsize - addr;
} }
uint32_t page_addr_mask = dev->page_addr_mask;
if ((addr & page_addr_mask) != ((addr + size - 1) & page_addr_mask)) {
/* Reads across page boundaries must be split */
size = mtd->page_size - (addr & ~(page_addr_mask));
}
if (size == 0) { if (size == 0) {
return 0; return 0;
} }