evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

rsxx debugfs inanity

Browse source 
check with the author of that horror...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2014-08-19 14:42:04 -04:00
parent d88c242623
commit 8e3fb059ae
1 changed files with 18 additions and 67 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

81
drivers/block/rsxx/core.c
View file

@ -62,12 +62,6 @@ static DEFINE_SPINLOCK(rsxx_ida_lock);
/* --------------------Debugfs Setup ------------------- */ /* --------------------Debugfs Setup ------------------- */
struct rsxx_cram {
u32 f_pos;
u32 offset;
void *i_private;
};
static int rsxx_attr_pci_regs_show(struct seq_file *m, void *p) static int rsxx_attr_pci_regs_show(struct seq_file *m, void *p)
{ {
struct rsxx_cardinfo *card = m->private; struct rsxx_cardinfo *card = m->private;
@ -184,93 +178,50 @@ static int rsxx_attr_pci_regs_open(struct inode *inode, struct file *file)
static ssize_t rsxx_cram_read(struct file *fp, char __user *ubuf, static ssize_t rsxx_cram_read(struct file *fp, char __user *ubuf,
size_t cnt, loff_t *ppos) size_t cnt, loff_t *ppos)
{ {
struct rsxx_cram *info = fp->private_data; struct rsxx_cardinfo *card = file_inode(fp)->i_private;
struct rsxx_cardinfo *card = info->i_private;
char *buf; char *buf;
int st; ssize_t st;
buf = kzalloc(sizeof(*buf) * cnt, GFP_KERNEL); buf = kzalloc(cnt, GFP_KERNEL);
if (!buf) if (!buf)
return -ENOMEM; return -ENOMEM;
info->f_pos = (u32)*ppos + info->offset; st = rsxx_creg_read(card, CREG_ADD_CRAM + (u32)*ppos, cnt, buf, 1);
if (!st)
st = rsxx_creg_read(card, CREG_ADD_CRAM + info->f_pos, cnt, buf, 1);
if (st)
return st;
st = copy_to_user(ubuf, buf, cnt); st = copy_to_user(ubuf, buf, cnt);
kfree(buf);
if (st) if (st)
return st; return st;
*ppos += cnt;
info->offset += cnt;
kfree(buf);
return cnt; return cnt;
} }
static ssize_t rsxx_cram_write(struct file *fp, const char __user *ubuf, static ssize_t rsxx_cram_write(struct file *fp, const char __user *ubuf,
size_t cnt, loff_t *ppos) size_t cnt, loff_t *ppos)
{ {
struct rsxx_cram *info = fp->private_data; struct rsxx_cardinfo *card = file_inode(fp)->i_private;
struct rsxx_cardinfo *card = info->i_private;
char *buf; char *buf;
int st; ssize_t st;
buf = kzalloc(sizeof(*buf) * cnt, GFP_KERNEL); buf = kzalloc(cnt, GFP_KERNEL);
if (!buf) if (!buf)
return -ENOMEM; return -ENOMEM;
st = copy_from_user(buf, ubuf, cnt); st = copy_from_user(buf, ubuf, cnt);
if (st) if (!st)
return st; st = rsxx_creg_write(card, CREG_ADD_CRAM + (u32)*ppos, cnt,
buf, 1);
info->f_pos = (u32)*ppos + info->offset;
st = rsxx_creg_write(card, CREG_ADD_CRAM + info->f_pos, cnt, buf, 1);
if (st)
return st;
info->offset += cnt;
kfree(buf); kfree(buf);
if (st)
return st;
*ppos += cnt;
return cnt; return cnt;
} }
static int rsxx_cram_open(struct inode *inode, struct file *file)
{
struct rsxx_cram *info = kzalloc(sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
info->i_private = inode->i_private;
info->f_pos = file->f_pos;
file->private_data = info;
return 0;
}
static int rsxx_cram_release(struct inode *inode, struct file *file)
{
struct rsxx_cram *info = file->private_data;
if (!info)
return 0;
kfree(info);
file->private_data = NULL;
return 0;
}
static const struct file_operations debugfs_cram_fops = { static const struct file_operations debugfs_cram_fops = {
.owner = THIS_MODULE, .owner = THIS_MODULE,
.open = rsxx_cram_open,
.read = rsxx_cram_read, .read = rsxx_cram_read,
.write = rsxx_cram_write, .write = rsxx_cram_write,
.release = rsxx_cram_release,
}; };
static const struct file_operations debugfs_stats_fops = { static const struct file_operations debugfs_stats_fops = {