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PROC_CALL ioctl hook in i2c-dev added

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git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@190 7894878c-1315-0410-8ee3-d5d059ff63e0
This commit is contained in:
Frodo Looijaard
1999-02-02 17:13:00 +00:00
parent e5abaab541
commit 6fe26d90fe
1 changed files with 14 additions and 12 deletions
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26
kernel/i2c-dev.c
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@@ -312,11 +312,13 @@ int i2cdev_ioctl (struct inode *inode, struct file *file, unsigned int cmd,
/* This seems unlogical but it is not: if the user wants to read a
value, we must write that value to user memory! */
ver = (data_arg.read_write == SMBUS_WRITE)?VERIFY_READ:VERIFY_WRITE;
ver = ((data_arg.read_write == SMBUS_WRITE) &&
(data_arg.size != SMBUS_PROC_CALL))?VERIFY_READ:VERIFY_WRITE;
if ((data_arg.size == SMBUS_BYTE_DATA) || (data_arg.size == SMBUS_BYTE))
datasize = sizeof(data_arg.data->byte);
else if (data_arg.size == SMBUS_WORD_DATA)
else if ((data_arg.size == SMBUS_WORD_DATA) ||
(data_arg.size == SMBUS_PROC_CALL))
datasize = sizeof(data_arg.data->word);
else /* size == SMBUS_BLOCK_DATA */
datasize = sizeof(data_arg.data->block);
@@ -328,17 +330,17 @@ int i2cdev_ioctl (struct inode *inode, struct file *file, unsigned int cmd,
#endif
return -EINVAL;
}
if (data_arg.read_write == SMBUS_WRITE) {
if ((data_arg.size == SMBUS_PROC_CALL) ||
(data_arg.read_write == SMBUS_WRITE))
copy_from_user(&temp,data_arg.data,datasize);
return smbus_access(client->adapter,client->addr,data_arg.read_write,
data_arg.command,data_arg.size,&temp);
} else {
res = smbus_access(client->adapter,client->addr,data_arg.read_write,
data_arg.command,data_arg.size,&temp);
if (!res)
copy_to_user(data_arg.data,&temp,datasize);
return res;
}
res = smbus_access(client->adapter,client->addr,data_arg.read_write,
data_arg.command,data_arg.size,&temp);
if (! res && ((data_arg.size == SMBUS_PROC_CALL) ||
(data_arg.read_write == SMBUS_READ)))
copy_to_user(data_arg.data,&temp,datasize);
return res;
default:
return i2c_control(client,cmd,arg);
}