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staging: dwc2: add missing shift

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This line extracted the available queue space without properly shifting
it. Since the code only cared wether it was zero or not, it worked as
expected without the shift, but adding shift makes the code cleaner.

While we're here, store the result in a helper variable that was already
declared to increase readability a bit more.

Signed-off-by: Matthijs Kooijman <matthijs@stdin.nl>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Matthijs Kooijman 2013-08-30 18:45:16 +02:00 committed by Greg Kroah-Hartman
parent d6ec53e04b
commit acdb9046b6
1 changed files with 3 additions and 1 deletions
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4
drivers/staging/dwc2/hcd.c
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@ -1020,7 +1020,9 @@ static void dwc2_process_periodic_channels(struct dwc2_hsotg *hsotg)
qh_ptr = hsotg->periodic_sched_assigned.next;
while (qh_ptr != &hsotg->periodic_sched_assigned) {
tx_status = readl(hsotg->regs + HPTXSTS);
if ((tx_status & TXSTS_QSPCAVAIL_MASK) == 0) {
qspcavail = (tx_status & TXSTS_QSPCAVAIL_MASK) >>
TXSTS_QSPCAVAIL_SHIFT;
if (qspcavail == 0) {
no_queue_space = 1;
break;
}