From: Vladimir Zapolskiy Date: Sun, 26 Jul 2015 21:48:26 +0000 (+0300) Subject: rtc: cmos: clean up cmos_nvram_read()/cmos_nvram_write() X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=a3781639e148497d7381d8786aaefe9f8b7e3028;p=deliverable%2Flinux.git 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 Signed-off-by: Alexandre Belloni --- 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