mtd: nand: supress 'unknown NAND' warning if no nand is found
This printk was added recently and results in ugly output on systems
with no NAND:
NAND: nand_get_flash_type: unknown NAND device: Manufacturer ID: 0x00, Chip ID: 0x00 0 MiB
instead of:
NAND: 0 MiB
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index ed1c9c9..7d17846 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2653,9 +2653,12 @@
}
if (!type) {
- printk(KERN_INFO "%s: unknown NAND device: Manufacturer ID:"
- " 0x%02x, Chip ID: 0x%02x\n", __func__,
- *maf_id, dev_id);
+ /* supress warning if there is no nand */
+ if (*maf_id != 0x00 && *maf_id != 0xff &&
+ dev_id != 0x00 && dev_id != 0xff)
+ printk(KERN_INFO "%s: unknown NAND device: "
+ "Manufacturer ID: 0x%02x, Chip ID: 0x%02x\n",
+ __func__, *maf_id, dev_id);
return ERR_PTR(-ENODEV);
}