Revision 0d96e4bab2855a030077cc695a3563fd7cb0e7d8 authored by Herbert Xu on 18 December 2015, 11:16:57 UTC, committed by Herbert Xu on 22 December 2015, 12:40:01 UTC
This patch replaces uses of ablkcipher with the new skcipher interface. Cc: stable@vger.kernel.org Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Tested-by: <smueller@chronox.de>
1 parent 70d906b
syscall.c
/*
* pci_syscall.c
*
* For architectures where we want to allow direct access
* to the PCI config stuff - it would probably be preferable
* on PCs too, but there people just do it by hand with the
* magic northbridge registers..
*/
#include <linux/errno.h>
#include <linux/pci.h>
#include <linux/syscalls.h>
#include <asm/uaccess.h>
#include "pci.h"
SYSCALL_DEFINE5(pciconfig_read, unsigned long, bus, unsigned long, dfn,
unsigned long, off, unsigned long, len, void __user *, buf)
{
struct pci_dev *dev;
u8 byte;
u16 word;
u32 dword;
long err;
long cfg_ret;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
err = -ENODEV;
dev = pci_get_bus_and_slot(bus, dfn);
if (!dev)
goto error;
switch (len) {
case 1:
cfg_ret = pci_user_read_config_byte(dev, off, &byte);
break;
case 2:
cfg_ret = pci_user_read_config_word(dev, off, &word);
break;
case 4:
cfg_ret = pci_user_read_config_dword(dev, off, &dword);
break;
default:
err = -EINVAL;
goto error;
}
err = -EIO;
if (cfg_ret != PCIBIOS_SUCCESSFUL)
goto error;
switch (len) {
case 1:
err = put_user(byte, (unsigned char __user *)buf);
break;
case 2:
err = put_user(word, (unsigned short __user *)buf);
break;
case 4:
err = put_user(dword, (unsigned int __user *)buf);
break;
}
pci_dev_put(dev);
return err;
error:
/* ??? XFree86 doesn't even check the return value. They
just look for 0xffffffff in the output, since that's what
they get instead of a machine check on x86. */
switch (len) {
case 1:
put_user(-1, (unsigned char __user *)buf);
break;
case 2:
put_user(-1, (unsigned short __user *)buf);
break;
case 4:
put_user(-1, (unsigned int __user *)buf);
break;
}
pci_dev_put(dev);
return err;
}
SYSCALL_DEFINE5(pciconfig_write, unsigned long, bus, unsigned long, dfn,
unsigned long, off, unsigned long, len, void __user *, buf)
{
struct pci_dev *dev;
u8 byte;
u16 word;
u32 dword;
int err = 0;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
dev = pci_get_bus_and_slot(bus, dfn);
if (!dev)
return -ENODEV;
switch (len) {
case 1:
err = get_user(byte, (u8 __user *)buf);
if (err)
break;
err = pci_user_write_config_byte(dev, off, byte);
if (err != PCIBIOS_SUCCESSFUL)
err = -EIO;
break;
case 2:
err = get_user(word, (u16 __user *)buf);
if (err)
break;
err = pci_user_write_config_word(dev, off, word);
if (err != PCIBIOS_SUCCESSFUL)
err = -EIO;
break;
case 4:
err = get_user(dword, (u32 __user *)buf);
if (err)
break;
err = pci_user_write_config_dword(dev, off, dword);
if (err != PCIBIOS_SUCCESSFUL)
err = -EIO;
break;
default:
err = -EINVAL;
break;
}
pci_dev_put(dev);
return err;
}
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