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cdc-wdm: Don't clear WDM_READ unless entire read buffer is emptied

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The WDM_READ flag is cleared later iff desc->length is reduced to 0.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Tested-by: Bjørn Mork <bjorn@mork.no>
Cc: Oliver Neukum <oliver@neukum.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ben Hutchings 2012-02-12 06:02:43 +00:00 committed by Greg Kroah-Hartman
parent 0cedc4e1c8
commit b7a2055453
1 changed files with 0 additions and 1 deletions
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drivers/usb/class/cdc-wdm.c
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@ -455,7 +455,6 @@ static ssize_t wdm_read
spin_unlock_irq(&desc->iuspin);
goto retry;
}
clear_bit(WDM_READ, &desc->flags);
cntr = desc->length;
spin_unlock_irq(&desc->iuspin);
}