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authorJagdish Gediya <jagdish.gediya@nxp.com>2018-05-02 01:20:57 +0530
committerYork Sun <york.sun@nxp.com>2018-05-09 09:17:51 -0500
commite8c669a3e6ec9b33aea55e957024f97300b99c1c (patch)
tree3b5a16e00f49927421f1be99ae6a84b6fda12fa9 /drivers/mtd/nand/fsl_ifc_nand.c
parent8b40f22900f3618ab1b83d15d078ab6f75c7c800 (diff)
mtd: nand: fsl_ifc: Fix nand waitfunc return value
As per the IFC hardware manual, Most significant byte in nand_fsr register is the outcome of NAND READ STATUS command. So status value need to be shifted as per the nand framework requirement. Signed-off-by: Jagdish Gediya <jagdish.gediya@nxp.com> Reviewed-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com> Reviewed-by: York Sun <york.sun@nxp.com>
Diffstat (limited to 'drivers/mtd/nand/fsl_ifc_nand.c')
-rw-r--r--drivers/mtd/nand/fsl_ifc_nand.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/mtd/nand/fsl_ifc_nand.c b/drivers/mtd/nand/fsl_ifc_nand.c
index 3cb487510a..a47226bd21 100644
--- a/drivers/mtd/nand/fsl_ifc_nand.c
+++ b/drivers/mtd/nand/fsl_ifc_nand.c
@@ -700,6 +700,7 @@ static int fsl_ifc_wait(struct mtd_info *mtd, struct nand_chip *chip)
struct fsl_ifc_ctrl *ctrl = priv->ctrl;
struct fsl_ifc_runtime *ifc = ctrl->regs.rregs;
u32 nand_fsr;
+ int status;
if (ctrl->status != IFC_NAND_EVTER_STAT_OPC)
return NAND_STATUS_FAIL;
@@ -720,10 +721,10 @@ static int fsl_ifc_wait(struct mtd_info *mtd, struct nand_chip *chip)
return NAND_STATUS_FAIL;
nand_fsr = ifc_in32(&ifc->ifc_nand.nand_fsr);
+ status = nand_fsr >> 24;
/* Chip sometimes reporting write protect even when it's not */
- nand_fsr = nand_fsr | NAND_STATUS_WP;
- return nand_fsr;
+ return status | NAND_STATUS_WP;
}
static int fsl_ifc_read_page(struct mtd_info *mtd, struct nand_chip *chip,