The W1_42_FINISHED_BYTE is 0xFF so the cast means the condition is
never true.
Fixes: d9411e57dc7f ('w1: Add support for DS28EA00 sequence to w1-therm')
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
diff --git a/drivers/w1/slaves/w1_therm.c b/drivers/w1/slaves/w1_therm.c
index d21e686..3351be6 100644
--- a/drivers/w1/slaves/w1_therm.c
+++ b/drivers/w1/slaves/w1_therm.c
@@ -378,7 +378,7 @@ static ssize_t w1_seq_show(struct device *device,
w1_write_8(sl->master, W1_42_COND_READ);
rv = w1_read_block(sl->master, (u8 *)&rn, 8);
reg_num = (struct w1_reg_num *) &rn;
- if ((char)reg_num->family == W1_42_FINISHED_BYTE)
+ if (reg_num->family == W1_42_FINISHED_BYTE)
break;
if (sl->reg_num.id == reg_num->id)
seq = i;
--
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