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OpenCloudOS-Kernel
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net: phy: spi_ks8995: clean up ks8995_registers_read/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: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vladimir Zapolskiy 2015-07-30 00:44:20 +03:00 committed by David S. Miller
parent 951debb949
commit 2f51a9b8ad
1 changed files with 0 additions and 22 deletions
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22
drivers/net/phy/spi_ks8995.c
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@ -209,8 +209,6 @@ static int ks8995_reset(struct ks8995_switch *ks)
return ks8995_start(ks); return ks8995_start(ks);
} }
/* ------------------------------------------------------------------------ */
static ssize_t ks8995_registers_read(struct file *filp, struct kobject *kobj, static ssize_t ks8995_registers_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count) struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count)
{ {
@ -220,19 +218,9 @@ static ssize_t ks8995_registers_read(struct file *filp, struct kobject *kobj,
dev = container_of(kobj, struct device, kobj); dev = container_of(kobj, struct device, kobj);
ks8995 = dev_get_drvdata(dev); ks8995 = dev_get_drvdata(dev);
if (unlikely(off > ks8995->regs_attr.size))
return 0;
if ((off + count) > ks8995->regs_attr.size)
count = ks8995->regs_attr.size - off;
if (unlikely(!count))
return count;
return ks8995_read(ks8995, buf, off, count); return ks8995_read(ks8995, buf, off, count);
} }
static ssize_t ks8995_registers_write(struct file *filp, struct kobject *kobj, static ssize_t ks8995_registers_write(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count) struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count)
{ {
@ -242,19 +230,9 @@ static ssize_t ks8995_registers_write(struct file *filp, struct kobject *kobj,
dev = container_of(kobj, struct device, kobj); dev = container_of(kobj, struct device, kobj);
ks8995 = dev_get_drvdata(dev); ks8995 = dev_get_drvdata(dev);
if (unlikely(off >= ks8995->regs_attr.size))
return -EFBIG;
if ((off + count) > ks8995->regs_attr.size)
count = ks8995->regs_attr.size - off;
if (unlikely(!count))
return count;
return ks8995_write(ks8995, buf, off, count); return ks8995_write(ks8995, buf, off, count);
} }
static const struct bin_attribute ks8995_registers_attr = { static const struct bin_attribute ks8995_registers_attr = {
.attr = { .attr = {
.name = "registers", .name = "registers",