[MTD] OneNAND: Return an error if a read timeout occurs

If OneNAND is operating within specification, all operations should easily be
completed within the 20 millisecond timeout.
This patch faithlessly adds a check for the timeout and returns an error in
that case.

Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index d0f31183d58f..ce1cbdcd355a 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -333,6 +333,9 @@ static int onenand_wait(struct mtd_info *mtd, int state)
                         } else if (ecc & ONENAND_ECC_1BIT_ALL)
                                 mtd->ecc_stats.corrected++;
                 }
+        } else if (state == FL_READING) {
+                printk(KERN_ERR "onenand_wait: read timeout! ctrl=0x%04x intr=0x%04x\n", ctrl, interrupt);
+                return -EIO;
         }
 
         return 0;