rtc: cmos: clean up cmos_nvram_read()/cmos_nvram_write()

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

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

1 files changed, 0 insertions, 13 deletions

diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index c2e90c62a59c..8f7034ba7d9e 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -467,13 +467,6 @@ cmos_nvram_read(struct file *filp, struct kobject *kobj,
 {
         int     retval;
 
-        if (unlikely(off >= attr->size))
-                return 0;
-        if (unlikely(off < 0))
-                return -EINVAL;
-        if ((off + count) > attr->size)
-                count = attr->size - off;
-
         off += NVRAM_OFFSET;
         spin_lock_irq(&rtc_lock);
         for (retval = 0; count; count--, off++, retval++) {
@@ -498,12 +491,6 @@ cmos_nvram_write(struct file *filp, struct kobject *kobj,
         int             retval;
 
         cmos = dev_get_drvdata(container_of(kobj, struct device, kobj));
-        if (unlikely(off >= attr->size))
-                return -EFBIG;
-        if (unlikely(off < 0))
-                return -EINVAL;
-        if ((off + count) > attr->size)
-                count = attr->size - off;
 
         /* NOTE:  on at least PCs and Ataris, the boot firmware uses a
          * checksum on part of the NVRAM data.  That's currently ignored