From a3781639e148497d7381d8786aaefe9f8b7e3028 Mon Sep 17 00:00:00 2001 From: Vladimir Zapolskiy Date: Mon, 27 Jul 2015 00:48:26 +0300 Subject: [PATCH] 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 --- drivers/rtc/rtc-cmos.c | 13 ------------- 1 file changed, 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 -- 2.20.1