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w1: mxc_w1: Fix incorrect "presence" status
author
Alexander Shiyan
<shc_work@mail.ru>
Thu, 8 May 2014 07:56:37 +0000
(11:56 +0400)
committer
Greg Kroah-Hartman
<gregkh@linuxfoundation.org>
Fri, 20 Jun 2014 00:51:46 +0000
(17:51 -0700)
W1 reset_bus() should return zero if slave device is present.
This patch fix this issue.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/w1/masters/mxc_w1.c
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diff --git
a/drivers/w1/masters/mxc_w1.c
b/drivers/w1/masters/mxc_w1.c
index
67b067a
..
a5df5e8
100644
(file)
--- a/
drivers/w1/masters/mxc_w1.c
+++ b/
drivers/w1/masters/mxc_w1.c
@@
-66,7
+66,7
@@
static u8 mxc_w1_ds2_reset_bus(void *data)
udelay(100);
}
- return !
!
(reg_val & MXC_W1_CONTROL_PST);
+ return !(reg_val & MXC_W1_CONTROL_PST);
}
/*