mmc: dw_mmc: correct mishandling error interrupt

Datasheet of SYNOPSYS mentions that DTO(Data Transfer Over) interrupt
will be raised even if some error interrupts, however it is actually
found that DTO does not occur. SYNOPSYS has confirmed this issue.
Current implementation defers the call of tasklet_schedule until DTO
when the error interrupts is happened. This patch fixes error handling.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 7baed457dc3b838f3a4cebab1a0cadf11b790704..1a5db20133ee43182be1492f8c8cca9b9776f0e4 100644 (file)
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1580,9 +1580,7 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id)
                        host->data_status = pending;
                        smp_wmb();
                        set_bit(EVENT_DATA_ERROR, &host->pending_events);
-                       if (!(pending & (SDMMC_INT_DTO | SDMMC_INT_DCRC |
-                                        SDMMC_INT_SBE | SDMMC_INT_EBE)))
-                               tasklet_schedule(&host->tasklet);
+                       tasklet_schedule(&host->tasklet);
                }
 
                if (pending & SDMMC_INT_DATA_OVER) {