From: Jay Lubomirski <[email protected]>
Don't clobber the interrupt cause bits for both MPSC controllers when
clearing the interrupt for one of them. Just clear the one that is
supposed to be cleared.
Signed-off-by: Jay Lubomirski <[email protected]>
Acked-by: Mark A. Greer <[email protected]>
---
drivers/serial/mpsc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/serial/mpsc.c b/drivers/serial/mpsc.c
index d09f209..00924fe 100644
--- a/drivers/serial/mpsc.c
+++ b/drivers/serial/mpsc.c
@@ -503,7 +503,8 @@ mpsc_sdma_intr_ack(struct mpsc_port_info *pi)
if (pi->mirror_regs)
pi->shared_regs->SDMA_INTR_CAUSE_m = 0;
- writel(0, pi->shared_regs->sdma_intr_base + SDMA_INTR_CAUSE);
+ writeb(0x00, pi->shared_regs->sdma_intr_base + SDMA_INTR_CAUSE +
+ pi->port.line);
return;
}
-
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