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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2018-08-02 01:47:47 +0300 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2018-08-02 03:59:25 +0300 |
| commit | 6078091c9fa899b0fd7097ae2af933554c2d989f (patch) | |
| tree | ace91fd6231d3f81ac0d300dc730dbffd640de18 /drivers/input/evdev.c | |
| parent | 4e2ec39ddbf3d78bc3b576a775fd5b4e4ff4af34 (diff) | |
| download | linux-6078091c9fa899b0fd7097ae2af933554c2d989f.tar.xz | |
Input: evdev - switch to bitmap API
Switch to bitmap API, i.e. bitmap_alloc(), bitmap_zalloc(), to show
clearly what we are allocating. Besides that it returns pointer of
bitmap type instead of opaque void *.
While here, replace memcpy() with bitmap_copy() for sake of consistency.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/evdev.c')
| -rw-r--r-- | drivers/input/evdev.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index c81c79d01d93..370206f987f9 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -481,7 +481,7 @@ static int evdev_release(struct inode *inode, struct file *file) evdev_detach_client(evdev, client); for (i = 0; i < EV_CNT; ++i) - kfree(client->evmasks[i]); + bitmap_free(client->evmasks[i]); kvfree(client); @@ -925,17 +925,15 @@ static int evdev_handle_get_val(struct evdev_client *client, { int ret; unsigned long *mem; - size_t len; - len = BITS_TO_LONGS(maxbit) * sizeof(unsigned long); - mem = kmalloc(len, GFP_KERNEL); + mem = bitmap_alloc(maxbit, GFP_KERNEL); if (!mem) return -ENOMEM; spin_lock_irq(&dev->event_lock); spin_lock(&client->buffer_lock); - memcpy(mem, bits, len); + bitmap_copy(mem, bits, maxbit); spin_unlock(&dev->event_lock); @@ -947,7 +945,7 @@ static int evdev_handle_get_val(struct evdev_client *client, if (ret < 0) evdev_queue_syn_dropped(client); - kfree(mem); + bitmap_free(mem); return ret; } @@ -1003,13 +1001,13 @@ static int evdev_set_mask(struct evdev_client *client, if (!cnt) return 0; - mask = kcalloc(sizeof(unsigned long), BITS_TO_LONGS(cnt), GFP_KERNEL); + mask = bitmap_zalloc(cnt, GFP_KERNEL); if (!mask) return -ENOMEM; error = bits_from_user(mask, cnt - 1, codes_size, codes, compat); if (error < 0) { - kfree(mask); + bitmap_free(mask); return error; } @@ -1018,7 +1016,7 @@ static int evdev_set_mask(struct evdev_client *client, client->evmasks[type] = mask; spin_unlock_irqrestore(&client->buffer_lock, flags); - kfree(oldmask); + bitmap_free(oldmask); return 0; } |