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cdc-wdm: Don't clear WDM_READ unless entire read buffer is emptied
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>
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@ -455,7 +455,6 @@ static ssize_t wdm_read
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spin_unlock_irq(&desc->iuspin);
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goto retry;
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}
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clear_bit(WDM_READ, &desc->flags);
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cntr = desc->length;
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spin_unlock_irq(&desc->iuspin);
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}
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