Re: [PATCH v2 tty-next] 8250: microchip: pci1xxxx: Add PCIe Hot reset disable support for Rev C0 and later devices

[Jiri Slaby]

On 24. 04. 25, 5:59, Rengarajan S wrote:
> Systems that issue PCIe hot reset requests during a suspend/resume
> cycle cause PCI1XXXX device revisions prior to C0 to get its UART
> configuration registers reset to hardware default values. This results
> in device inaccessibility and data transfer failures. Starting with
> Revision C0, support was added in the device hardware (via the Hot
> Reset Disable Bit) to allow resetting only the PCIe interface and its
> associated logic, but preserving the UART configuration during a hot
> reset. This patch enables the hot reset disable feature during suspend/
> resume for C0 and later revisions of the device.
>
> v2
> Retained the original writel and simplified the hot reset condition
> v1
> Initial Commit.

This should have been under the --- line below.

> Signed-off-by: Rengarajan S <rengarajan.s@xxxxxxxxxxxxx>

Reviewed-by: Jiri Slaby <jirislaby@xxxxxxxxxx>

> ---

vvvvv here

>   drivers/tty/serial/8250/8250_pci1xxxx.c | 10 ++++++++++
>   1 file changed, 10 insertions(+)

thanks,
--
js
suse labs