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Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

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Pull i2c fixes from Wolfram Sang:
 "Here are two bugfixes for I2C, fixing a memleak in the core and irq
  allocation for i801.

  Also three bugfixes for the at24 eeprom driver which Bartosz collected
  while taking over maintainership for this driver"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  eeprom: at24: check at24_read/write arguments
  eeprom: at24: fix reading from 24MAC402/24MAC602
  eeprom: at24: correctly set the size for at24mac402
  i2c: i2c-boardinfo: fix memory leaks on devinfo
  i2c: i801: Fix Failed to allocate irq -2147483648 error
This commit is contained in:
Linus Torvalds 2017-12-03 10:48:24 -05:00
commit ae4806a38b
3 changed files with 23 additions and 1 deletions
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3
drivers/i2c/busses/i2c-i801.c
View File

@ -1617,6 +1617,9 @@ static int i801_probe(struct pci_dev *dev, const struct pci_device_id *id)
/* Default timeout in interrupt mode: 200 ms */
priv->adapter.timeout = HZ / 5;
if (dev->irq == IRQ_NOTCONNECTED)
priv->features &= ~FEATURE_IRQ;
if (priv->features & FEATURE_IRQ) {
u16 pcictl, pcists;

2
drivers/i2c/i2c-boardinfo.c
View File

@ -86,6 +86,7 @@ int i2c_register_board_info(int busnum, struct i2c_board_info const *info, unsig
property_entries_dup(info->properties);
if (IS_ERR(devinfo->board_info.properties)) {
status = PTR_ERR(devinfo->board_info.properties);
kfree(devinfo);
break;
}
}
@ -98,6 +99,7 @@ int i2c_register_board_info(int busnum, struct i2c_board_info const *info, unsig
GFP_KERNEL);
if (!devinfo->board_info.resources) {
status = -ENOMEM;
kfree(devinfo);
break;
}
}

19
drivers/misc/eeprom/at24.c
View File

@ -425,7 +425,8 @@ static ssize_t at24_eeprom_read_mac(struct at24_data *at24, char *buf,
memset(msg, 0, sizeof(msg));
msg[0].addr = client->addr;
msg[0].buf = addrbuf;
addrbuf[0] = 0x90 + offset;
/* EUI-48 starts from 0x9a, EUI-64 from 0x98 */
addrbuf[0] = 0xa0 - at24->chip.byte_len + offset;
msg[0].len = 1;
msg[1].addr = client->addr;
msg[1].flags = I2C_M_RD;
@ -568,6 +569,9 @@ static int at24_read(void *priv, unsigned int off, void *val, size_t count)
if (unlikely(!count))
return count;
if (off + count > at24->chip.byte_len)
return -EINVAL;
client = at24_translate_offset(at24, &off);
ret = pm_runtime_get_sync(&client->dev);
@ -613,6 +617,9 @@ static int at24_write(void *priv, unsigned int off, void *val, size_t count)
if (unlikely(!count))
return -EINVAL;
if (off + count > at24->chip.byte_len)
return -EINVAL;
client = at24_translate_offset(at24, &off);
ret = pm_runtime_get_sync(&client->dev);
@ -730,6 +737,16 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id)
dev_warn(&client->dev,
"page_size looks suspicious (no power of 2)!\n");
/*
* REVISIT: the size of the EUI-48 byte array is 6 in at24mac402, while
* the call to ilog2() in AT24_DEVICE_MAGIC() rounds it down to 4.
*
* Eventually we'll get rid of the magic values altoghether in favor of
* real structs, but for now just manually set the right size.
*/
if (chip.flags & AT24_FLAG_MAC && chip.byte_len == 4)
chip.byte_len = 6;
/* Use I2C operations unless we're stuck with SMBus extensions. */
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
if (chip.flags & AT24_FLAG_ADDR16)