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xhci: omit mem read just after allocation of trb 

This has been allocated just a few lines earlier with a
zalloc(). The value is known and "|=" is a waste of memory
cycles.

Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://lore.kernel.org/r/20220217133549.27961-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Oliver Neukum 2022-02-17 14:35:49 +01:00 committed by Greg Kroah-Hartman
parent c6c986b657
commit f9aeda81c0
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/host/xhci-mem.c
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@ -57,7 +57,7 @@ static struct xhci_segment *xhci_segment_alloc(struct xhci_hcd *xhci,
/* If the cycle state is 0, set the cycle bit to 1 for all the TRBs */
if (cycle_state == 0) {
for (i = 0; i < TRBS_PER_SEGMENT; i++)
seg->trbs[i].link.control |= cpu_to_le32(TRB_CYCLE);
seg->trbs[i].link.control = cpu_to_le32(TRB_CYCLE);
}
seg->dma = dma;
seg->next = NULL;