media: ddbridge: remove unreachable code

>From smatch:

  drivers/media/pci/ddbridge/ddbridge-core.c:3490 snr_store() info: ignoring unreachable code.

In fact, the function immediately returns zero, so remove it and update
ddb_attrs_snr[] to not reference it anymore.

Cc: Ralph Metzler <rjkm@metzlerbros.de>
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Tested-by: Richard Scobie <r.scobie@clear.net.nz>
Tested-by: Jasmin Jessich <jasmin@anw.at>
Tested-by: Dietmar Spingler <d_spingler@freenet.de>
Tested-by: Manfred Knick <Manfred.Knick@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/drivers/media/pci/ddbridge/ddbridge-core.c b/drivers/media/pci/ddbridge/ddbridge-core.c
index 5df942f4e3881d10abef163e87e75f71c19b3372..747f3b317fb91255f4111662ec33c0abfe4533ae 100644 (file)
--- a/drivers/media/pci/ddbridge/ddbridge-core.c
+++ b/drivers/media/pci/ddbridge/ddbridge-core.c
@@ -3092,25 +3092,6 @@ static ssize_t snr_show(struct device *device,
        return sprintf(buf, "%s\n", snr);
 }
 
-
-static ssize_t snr_store(struct device *device, struct device_attribute *attr,
-                        const char *buf, size_t count)
-{
-       struct ddb *dev = dev_get_drvdata(device);
-       int num = attr->attr.name[3] - 0x30;
-       u8 snr[34] = { 0x01, 0x00 };
-
-       return 0; /* NOE: remove completely? */
-       if (count > 31)
-               return -EINVAL;
-       if (dev->port[num].type >= DDB_TUNER_XO2)
-               return -EINVAL;
-       memcpy(snr + 2, buf, count);
-       i2c_write(&dev->i2c[num].adap, 0x57, snr, 34);
-       i2c_write(&dev->i2c[num].adap, 0x50, snr, 34);
-       return count;
-}
-
 static ssize_t bsnr_show(struct device *device,
                         struct device_attribute *attr, char *buf)
 {
@@ -3250,10 +3231,10 @@ static struct device_attribute ddb_attrs_fan[] = {
 };
 
 static struct device_attribute ddb_attrs_snr[] = {
-       __ATTR(snr0, 0664, snr_show, snr_store),
-       __ATTR(snr1, 0664, snr_show, snr_store),
-       __ATTR(snr2, 0664, snr_show, snr_store),
-       __ATTR(snr3, 0664, snr_show, snr_store),
+       __ATTR_MRO(snr0, snr_show),
+       __ATTR_MRO(snr1, snr_show),
+       __ATTR_MRO(snr2, snr_show),
+       __ATTR_MRO(snr3, snr_show),
 };
 
 static struct device_attribute ddb_attrs_ctemp[] = {