Re: [PATCH] rtlwifi: use tasklet_setup to initialize rx_work_tasklet

Willem de Bruijn [off-list ref] writes:

On Wed, Jan 27, 2021 at 5:23 AM Emil Renner Berthing [off-list ref] wrote:

quoted

In commit d3ccc14dfe95 most of the tasklets in this driver was
updated to the new API. However for the rx_work_tasklet only the
type of the callback was changed from
  void _rtl_rx_work(unsigned long data)
to
  void _rtl_rx_work(struct tasklet_struct *t).

The initialization of rx_work_tasklet was still open-coded and the
function pointer just cast into the old type, and hence nothing sets
rx_work_tasklet.use_callback = true and the callback was still called as

  t->func(t->data);

with uninitialized/zero t->data.

Commit 6b8c7574a5f8 changed the casting of _rtl_rx_work a bit and
initialized t->data to a pointer to the tasklet cast to an unsigned
long.

This way calling t->func(t->data) might actually work through all the
casting, but it still doesn't update the code to use the new tasklet
API.

Let's use the new tasklet_setup to initialize rx_work_tasklet properly
and set rx_work_tasklet.use_callback = true so that the callback is
called as

  t->callback(t);

without all the casting.

Fixes: 6b8c7574a5f8 ("rtlwifi: fix build warning")
Fixes: d3ccc14dfe95 ("rtlwifi/rtw88: convert tasklets to use new
tasklet_setup() API")
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>

Since the current code works, this could target net-next

This should go to wireless-drivers-next, not net-next.

without Fixes tags.

Correct, no need for Fixes tag as there's no bug to fix. This is only
cleanup AFAICS.

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