MTD: [NAND] Fix the sharpsl driver after breakage from a core conversion

The CNE bits are inverted on the device and writeb function is missing a
NOT operation.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/mtd/nand/sharpsl.c b/drivers/mtd/nand/sharpsl.c
index fbeedc3184e9..51c7288ab49a 100644
--- a/drivers/mtd/nand/sharpsl.c
+++ b/drivers/mtd/nand/sharpsl.c
@@ -78,7 +78,7 @@ static struct mtd_partition sharpsl_nand_default_partition_info[] = {
 /*
  *      hardware specific access to control-lines
  *      ctrl:
- *      NAND_CNE: bit 0 -> bit 0 & 4
+ *      NAND_CNE: bit 0 -> ! bit 0 & 4
  *      NAND_CLE: bit 1 -> bit 1
  *      NAND_ALE: bit 2 -> bit 2
  *
@@ -92,7 +92,10 @@ static void sharpsl_nand_hwcontrol(struct mtd_info *mtd, int cmd,
                 unsigned char bits = ctrl & 0x07;
 
                 bits |= (ctrl & 0x01) << 4;
-                writeb((readb(FLASHCTL) & 0x17) | bits, FLASHCTL);
+
+                bits ^= 0x11;
+
+                writeb((readb(FLASHCTL) & ~0x17) | bits, FLASHCTL);
         }
 
         if (cmd != NAND_CMD_NONE)