w1: mxc_w1: Fix mxc_w1_ds2_reset_bus() return value
authorAlexander Shiyan <shc_work@mail.ru>
Sat, 22 Feb 2014 07:29:49 +0000 (11:29 +0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 28 Feb 2014 23:27:09 +0000 (15:27 -0800)
This patch fix mxc_w1_ds2_reset_bus() return value.
According to i.MX reference manual, "presence status" reflected
in the bit 6 of control register.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/w1/masters/mxc_w1.c

index 1e5d94c5afc9668af993bacbdcc2ea8a6e1de497..6525b2c67da96bbffc50b1609401b0758cb069af 100644 (file)
@@ -74,7 +74,7 @@ static u8 mxc_w1_ds2_reset_bus(void *data)
 
                udelay(100);
        }
-       return (reg_val >> 7) & 0x1;
+       return (reg_val >> 6) & 0x1;
 }
 
 /*