Hi Matt,
On Sat, May 26, 2018 at 12:35:23PM -0700, Matt Turner wrote:
> This Multi-IO card has one serial 16550-like serial connectors. Here's
> the lspci output, after this commit is applied:
>
> 01:00.0 Serial controller [0700]: Device [1c00:3470] (rev 10) (prog-if 05
> [16850])
> Subsystem: Device [1c00:3470]
> Flags: fast devsel, IRQ 16
> I/O ports at e000 [size=256]
> Memory at f0100000 (32-bit, prefetchable) [size=32K]
> I/O ports at e100 [size=4]
> Expansion ROM at f7d00000 [disabled] [size=32K]
> Capabilities: [60] Power Management version 3
> Capabilities: [68] MSI: Enable- Count=1/32 Maskable+ 64bit+
> Capabilities: [80] Express Legacy Endpoint, MSI 00
> Capabilities: [100] Advanced Error Reporting
> Kernel driver in use: parport_serial
>
> This card was already added to the blacklist of 8250_pci.c in commit
> 72a3c0e4e662 ("tty: Add support for the WCH384 4S multi-IO card").
>
> Cc: Sergej Pupykin <m...@sergej.pp.ru>
> Signed-off-by: Matt Turner <matts...@gmail.com>
> ---
> It looks like CH355_4S is similarly missing, but I don't have hardware
> to test.
>
> This commit makes me wonder if I'm missing something -- how could
> anything have worked after commit 72a3c0e4e662 without support in
> parport_serial?
>
Is the patch still needed to be applied? After Andy's patch to tty tree,
the device (0x1c00, 0x3470) will be probed by 8250_pci.c.
--
Regards
Sudip
