Hi Wolfram,
On Thu, Mar 16, 2023 at 8:46 AM Wolfram Sang
<wsa+renesas@xxxxxxxxxxxxxxxxxxxx> wrote:
> This reverts commit 1e30b8d755b81b0d1585cb22bc753e9f2124fe87. Running
> 'ifconfig' with the interface down BUGs. This is the culprit:
>
> smsc911x_get_stats from dev_get_stats+0xe4/0xf4
>
> The above function is called with the clocks off, so register read
> fails. Enabling clocks in the above functions does not work, because it
> is called in atomic context. So, let's return to the simple and working
> PM we had before.
>
> Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
Thanks for your patch!
In sh_eth this was fixed differently, by adding a check for
mdp->is_opened to sh_eth_get_stats() [1].
I believe the modern way would be to add a check for netif_running()
instead.
Would adding such a check to smsc911x_get_stats() work for you, too?
[1] 7fa2955ff70ce453 ("sh_eth: Fix sleeping function called from
invalid context")
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
