From 1bdafdf02711c18b54e4d981b96dc0abe9503668 Mon Sep 17 00:00:00 2001 From: Daniel Scheller Date: Sat, 12 Aug 2017 07:55:58 -0400 Subject: [PATCH] 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 Signed-off-by: Daniel Scheller Tested-by: Richard Scobie Tested-by: Jasmin Jessich Tested-by: Dietmar Spingler Tested-by: Manfred Knick Signed-off-by: Mauro Carvalho Chehab --- drivers/media/pci/ddbridge/ddbridge-core.c | 27 ++++------------------ 1 file changed, 4 insertions(+), 23 deletions(-) diff --git a/drivers/media/pci/ddbridge/ddbridge-core.c b/drivers/media/pci/ddbridge/ddbridge-core.c index 5df942f4e388..747f3b317fb9 100644 --- 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[] = { -- 2.30.2