Larry Finger Larry.Finger@lwfinger.net 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@vger.kernel.org # 4.18+ Cc: Taketo Kabe kabe@sra-tohoku.co.jp Reported-and-tested-by: D. Prabhu d.praabhu@gmail.com Signed-off-by: Larry Finger Larry.Finger@lwfinger.net
I'll change the title to something more descriptive:
b43: fix DMA error related regression with proprietary firmware
Does that make sense?