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>
diff --git a/drivers/mtd/nand/fsl_ifc_nand.c b/drivers/mtd/nand/fsl_ifc_nand.c
index 3cb4875..a47226b 100644
--- a/drivers/mtd/nand/fsl_ifc_nand.c
+++ b/drivers/mtd/nand/fsl_ifc_nand.c
@@ -700,6 +700,7 @@
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 @@
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,