+++ /dev/null
-From 1e99d0d51ec97bf48edd277658004ce030543d98 Mon Sep 17 00:00:00 2001
-From: Cyrille Pitchen <cyrille.pitchen@atmel.com>
-Date: Tue, 6 Dec 2016 17:01:41 +0100
-Subject: [PATCH] mtd: spi-nor: improve macronix_quad_enable()
-
-The patch checks whether the Quad Enable bit is already set in the Status
-Register. If so, the function exits immediately with a successful return
-code.
-
-Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
-Reviewed-by: Jagan Teki <jagan@openedev.com>
-Acked-by: Marek Vasut <marek.vasut@gmail.com>
----
- drivers/mtd/spi-nor/spi-nor.c | 3 +++
- 1 file changed, 3 insertions(+)
-
---- a/drivers/mtd/spi-nor/spi-nor.c
-+++ b/drivers/mtd/spi-nor/spi-nor.c
-@@ -1311,6 +1311,9 @@ static int macronix_quad_enable(struct s
- val = read_sr(nor);
- if (val < 0)
- return val;
-+ if (val & SR_QUAD_EN_MX)
-+ return 0;
-+
- write_enable(nor);
-
- write_sr(nor, val | SR_QUAD_EN_MX);