mtd: parsers: qcom: incompatible with spi-nor 4k sectors

Partition size and offset value are in block size units, which is the
same as 'erasesize'. But when 4K sectors are enabled erasesize is set to
4K. Bail out in that case.

Fixes: 803eb124 ("mtd: parsers: Add Qcom SMEM parser")
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/0a2611f885b894274436ded3ca78bc0440fca74a.1614790096.git.baruch@tkos.co.il

drivers/mtd/parsers/qcomsmempart.c

@@ -65,6 +65,13 @@ static int parse_qcomsmem_part(struct mtd_info *mtd,
 	int ret, i, numparts;
 	char *name, *c;
 
+	if (IS_ENABLED(CONFIG_MTD_SPI_NOR_USE_4K_SECTORS)
+			&& mtd->type == MTD_NORFLASH) {
+		pr_err("%s: SMEM partition parser is incompatible with 4K sectors\n",
+				mtd->name);
+		return -EINVAL;
+	}
+
 	pr_debug("Parsing partition table info from SMEM\n");
 	ptable = qcom_smem_get(SMEM_APPS, SMEM_AARM_PARTITION_TABLE, &len);
 	if (IS_ERR(ptable)) {