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Re: [PATCH wireless 1/9] wifi: cfg80211: avoid garbage value of 'io_type' in brcmf_cfg80211_attach()

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On July 2, 2024 5:37:10 PM Dan Carpenter <dan.carpenter@xxxxxxxxxx> wrote:

On Tue, Jul 02, 2024 at 06:29:20PM +0300, Kalle Valo wrote:
Arend Van Spriel <arend.vanspriel@xxxxxxxxxxxx> writes:

On July 2, 2024 3:57:27 PM Dan Carpenter <dan.carpenter@xxxxxxxxxx> wrote:

On Tue, Jul 02, 2024 at 08:24:44PM +0800, Su Hui wrote:
brcmf_fil_cmd_int_get() reads the value of 'io_type' and passes it to
brcmf_fil_cmd_data_get(). Initialize 'io_type' to avoid garbage value.

Since you're going to be resending anyway, please delete the space char
from the start of the line.

It's weird that brcmf_fil_cmd_data_get() uses the uninitialized data.
It looks like it just goes to great lengths to preserve the original
data in io_type...  So it likely is harmless enough but still a strange
and complicated way write a no-op.

Not sure if it helps, but I tried to explain the reason in response to
patch 0 (cover letter).

Would it make more sense to have just one patch? It's the same issue
anyway.

The Fixes tags are different though.  I'd probably leave them as
separate patches just because of that.

Depending how you look at the problem those tags are wrong.

Regards,
Arend


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