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mma8452: fix memory corruption bug

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BUG kmalloc-4096: Poison overwritten
-----------------------------------------------------------------------------

INFO: 0xd34138d4-0xd34138d4. First byte 0x6a instead of 0x6b
INFO: Allocated in input_allocate_device+0x10/0x98 age=3 cpu=0 pid=1
INFO: Freed in input_dev_release+0x18/0x24 age=0 cpu=0 pid=1
INFO: Slab 0xc02b5240 objects=7 used=5 fp=0xd34130c0 flags=0x40c3
INFO: Object 0xd34130c0 @offset=12480 fp=0xd3416180
This commit is contained in:
黄涛
2011-03-29 13:52:02 +08:00
parent 2567f5ebfc
commit 6653dd0bba
1 changed files with 8 additions and 6 deletions
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14
drivers/input/gsensor/mma8452.c
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@@ -627,7 +627,12 @@ static int mma8452_probe(struct i2c_client *client, const struct i2c_device_id
"mma8452_probe: mma8452_init_client failed\n");
goto exit_request_gpio_irq_failed;
}
if (MMA8452_DEVID != mma8452_get_devid(this_client)) {
pr_info("mma8452: invalid devid\n");
goto exit_invalid_devid;
}
mma8452->input_dev = input_allocate_device();
if (!mma8452->input_dev) {
err = -ENOMEM;
@@ -678,13 +683,9 @@ static int mma8452_probe(struct i2c_client *client, const struct i2c_device_id
mma8452_early_suspend.level = 0x2;
register_early_suspend(&mma8452_early_suspend);
#endif
if(MMA8452_DEVID == mma8452_get_devid(this_client))
printk(KERN_INFO "mma8452 probe ok\n");
else
goto exit_gsensor_sysfs_init_failed;
mma8452->status = -1;
printk(KERN_INFO "mma8452 probe ok\n");
#if 0
// mma8452_start_test(this_client);
mma8452_start(client, MMA8452_RATE_12P5);
@@ -698,6 +699,7 @@ exit_misc_device_register_mma8452_device_failed:
exit_input_register_device_failed:
input_free_device(mma8452->input_dev);
exit_input_allocate_device_failed:
exit_invalid_devid:
free_irq(client->irq, mma8452);
exit_request_gpio_irq_failed:
kfree(mma8452);