Re: [PATCH] USB: ftdi_sio: Fix read regression in 2.6.31.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Sat, 19 Sep 2009, Johan Hovold wrote:

> Use ASYNCB_INITIALIZED to determine when to stop reading.
> 
> Since 335f8514f200e63d689113d29cb7253a5c282967 port count can no longer
> be used to determine when to stop reading from the device as it can be
> zero when the first read callbacks are made (see tty_port_block_til_read
> where port count is temporarily decremented during serial_open).
> 
> This fixes the regression where reads fail after connecting the device
> and opening the port more than once (reads usually succeed after the
> first open due to the device latency timer then being set to the default
> 16ms rather than 1ms).

This is a good change.  It should be made in all the serial drivers, 
not just ftdi_sio.  How'd you like to submit patches for all the rest 
of the drivers?

Alan Stern

--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux