USB: gadget: f_printer: set a default q_len

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The usb_f_printer gadget driver uses a default q_len value of *0* which prevents
any IO from occurring.  Moreover, once the driver is instantiated it is
impossible to change the q_len value.

The following patch uses a default q_len value of 10 which matches the legacy
g_printer gadget driver.  This minimizes the possibility that you end up with a
non-working printer gadget.  It is still possible to set the q_len to a
different value using the configfs path of the same name.

Signed-off-by: Michael R Sweet <msweet@msweet.org>
Link: https://lore.kernel.org/r/9DFB1605-63A5-46DB-A5A4-B59B315D8115@msweet.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Michael R Sweet 2020-12-28 12:18:24 -05:00 • committed by Greg Kroah-Hartman

parent 7c9a259846

commit ed054e4e95

1 changed files with 5 additions and 0 deletions

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drivers/usb/gadget/function/f_printer.c

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