rtc: ds1305: clean up ds1305_nvram_read()/ds1305_nvram_write()

The change removes redundant sysfs binary file boundary checks, since
this task is already done on caller size in fs/sysfs/file.c

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

diff --git a/drivers/rtc/rtc-ds1305.c b/drivers/rtc/rtc-ds1305.c
index 12b0715..baa5d04 100644 (file)
--- a/drivers/rtc/rtc-ds1305.c
+++ b/drivers/rtc/rtc-ds1305.c
@@ -538,15 +538,6 @@ ds1305_nvram_read(struct file *filp, struct kobject *kobj,
 
        spi = container_of(kobj, struct spi_device, dev.kobj);
 
-       if (unlikely(off >= DS1305_NVRAM_LEN))
-               return 0;
-       if (count >= DS1305_NVRAM_LEN)
-               count = DS1305_NVRAM_LEN;
-       if ((off + count) > DS1305_NVRAM_LEN)
-               count = DS1305_NVRAM_LEN - off;
-       if (unlikely(!count))
-               return count;
-
        addr = DS1305_NVRAM + off;
        msg_init(&m, x, &addr, count, NULL, buf);
 
@@ -569,15 +560,6 @@ ds1305_nvram_write(struct file *filp, struct kobject *kobj,
 
        spi = container_of(kobj, struct spi_device, dev.kobj);
 
-       if (unlikely(off >= DS1305_NVRAM_LEN))
-               return -EFBIG;
-       if (count >= DS1305_NVRAM_LEN)
-               count = DS1305_NVRAM_LEN;
-       if ((off + count) > DS1305_NVRAM_LEN)
-               count = DS1305_NVRAM_LEN - off;
-       if (unlikely(!count))
-               return count;
-
        addr = (DS1305_WRITE | DS1305_NVRAM) + off;
        msg_init(&m, x, &addr, count, buf, NULL);