w1: mxc_w1: Fix incorrect "presence" status

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>
11 years ago · 37014f5bd0
parent b29f680c4f
commit 37014f5bd0
1 changed files with 1 additions and 1 deletions
--- 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);
 }

 /*