Re: [PATCH] b43: Fix regression in kernel 4.18

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On 08/31/2018 10:38 AM, Kalle Valo wrote:
Larry Finger <Larry.Finger@xxxxxxxxxxxx> wrote:

In commit 66cffd6daab7 ("b43: fix transmit failure when VT is switched"),
a condition is noted where the network controller needs to be reset. Note
that this situation happens when running the open-source firmware
(http://netweb.ing.unibs.it/~openfwwf/), plus a number of other special
conditions.

for a different card model, it is reported that this change breaks
operation running the proprietary firmware
(https://marc.info/?l=linux-wireless&m=153504546924558&w=2). Rather
than reverting the previous patch, the code is tweaked to avoid the
reset unless the open-source firmware is being used.

Fixes: 66cffd6daab7 ("b43: fix transmit failure when VT is switched")
Cc: Stable <stable@xxxxxxxxxxxxxxx> # 4.18+
Cc: Taketo Kabe <kabe@xxxxxxxxxxxxxxxx>
Reported-and-tested-by: D. Prabhu <d.praabhu@xxxxxxxxx>
Signed-off-by: Larry Finger <Larry.Finger@xxxxxxxxxxxx>

I'll change the title to something more descriptive:

b43: fix DMA error related regression with proprietary firmware

Does that make sense?

Yes, that is fine.

Larry




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