w1: w1_therm: fix build warning in w1_seq_show()

Fix the following build warning:

  drivers/w1/slaves/w1_therm.c: In function ‘w1_seq_show’:
  drivers/w1/slaves/w1_therm.c:2059:6: warning: variable ‘rv’ set but not used [-Wunused-but-set-variable]
    int rv;
        ^~

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20210518050415.615783-1-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/w1/slaves/w1_therm.c b/drivers/w1/slaves/w1_therm.c
index a284da5..ca70c5f 100644 (file)
--- a/drivers/w1/slaves/w1_therm.c
+++ b/drivers/w1/slaves/w1_therm.c
@@ -2056,7 +2056,6 @@ static ssize_t w1_seq_show(struct device *device,
 {
        struct w1_slave *sl = dev_to_w1_slave(device);
        ssize_t c = PAGE_SIZE;
-       int rv;
        int i;
        u8 ack;
        u64 rn;
@@ -2084,7 +2083,7 @@ static ssize_t w1_seq_show(struct device *device,
                        goto error;
 
                w1_write_8(sl->master, W1_42_COND_READ);
-               rv = w1_read_block(sl->master, (u8 *)&rn, 8);
+               w1_read_block(sl->master, (u8 *)&rn, 8);
                reg_num = (struct w1_reg_num *) &rn;
                if (reg_num->family == W1_42_FINISHED_BYTE)
                        break;