linux-kernel - Re: [PATCH] xhci: reduce xhci_handshake timeout in xhci

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Date:   Mon, 14 Feb 2022 18:45:30 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...il.com>
To:     Pavankumar Kondeti <quic_pkondeti@...cinc.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mathias Nyman <mathias.nyman@...el.com>,
        Sarah Sharp <sarah.a.sharp@...ux.intel.com>
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        quic_ugoswami@...cinc.com, Jung Daehwan <dh10.jung@...sung.com>
Subject: Re: [PATCH] xhci: reduce xhci_handshake timeout in xhci_reset

Hello!

On 2/14/22 2:04 PM, Pavankumar Kondeti wrote:

> From: Daehwan Jung <dh10.jung@...sung.com>
> 
> xhci_reset() is called with interrupts disabled. Waiting 10 seconds for
> controller reset and controller ready operations can be fatal to the
> system when controller is timed out. Reduce the timeout to 1 second
> and print a error message when the time out happens.

   Waiting 1 second with IRQs diabled is also hardly acceptable. :-/

> 
> Fixes: 22ceac191211 ("xhci: Increase reset timeout for Renesas 720201 host.")
> Signed-off-by: Daehwan Jung <dh10.jung@...sung.com>
> Signed-off-by: Pavankumar Kondeti <quic_pkondeti@...cinc.com>
[...]

MBR, Sergey