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usb: misc: adutux: use swap()

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Use swap() in order to make code cleaner. Issue found by coccinelle.

Signed-off-by: Salah Triki <salah.triki@gmail.com>
Link: https://lore.kernel.org/r/20210803005343.GA1578854@pc
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Salah Triki 2021-08-03 01:53:43 +01:00 committed by Greg Kroah-Hartman
parent 90059e9395
commit e21dd90eb8
1 changed files with 1 additions and 4 deletions
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5
drivers/usb/misc/adutux.c
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@ -394,13 +394,10 @@ static ssize_t adu_read(struct file *file, __user char *buffer, size_t count,
spin_lock_irqsave (&dev->buflock, flags);
if (dev->read_buffer_length) {
/* we secure access to the primary */
char *tmp;
dev_dbg(&dev->udev->dev,
"%s : swap, read_buffer_length = %d\n",
__func__, dev->read_buffer_length);
tmp = dev->read_buffer_secondary;
dev->read_buffer_secondary = dev->read_buffer_primary;
dev->read_buffer_primary = tmp;
swap(dev->read_buffer_primary, dev->read_buffer_secondary);
dev->secondary_head = 0;
dev->secondary_tail = dev->read_buffer_length;
dev->read_buffer_length = 0;