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hw/ide/ahci.c: Avoid shift left into sign bit 

Add U suffix to avoid shifting left into the sign bit, which
is undefined behaviour.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Peter Maydell 2014-03-28 15:12:55 +00:00 committed by Michael Tokarev
parent 86e117724a
commit ee25595f01
1 changed files with 2 additions and 2 deletions
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4
hw/ide/ahci.c
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@ -438,9 +438,9 @@ static void check_cmd(AHCIState *s, int port)
if ((pr->cmd & PORT_CMD_START) && pr->cmd_issue) { if ((pr->cmd & PORT_CMD_START) && pr->cmd_issue) {
for (slot = 0; (slot < 32) && pr->cmd_issue; slot++) { for (slot = 0; (slot < 32) && pr->cmd_issue; slot++) {
if ((pr->cmd_issue & (1 << slot)) && if ((pr->cmd_issue & (1U << slot)) &&
!handle_cmd(s, port, slot)) { !handle_cmd(s, port, slot)) {
pr->cmd_issue &= ~(1 << slot); pr->cmd_issue &= ~(1U << slot);
} }
} }
} }