From: Seungwon Jeon <tgih.jun@samsung.com>
To: linux-mmc@vger.kernel.org
Cc: 'Chris Ball' <cjb@laptop.org>,
'Will Newton' <will.newton@imgtec.com>,
'James Hogan' <james.hogan@imgtec.com>,
'Jaehoon Chung' <jh80.chung@samsung.com>
Subject: [PATCH 2/3] mmc: dw_mmc: correct mishandling error interrupt
Date: Wed, 01 Aug 2012 09:30:40 +0900 [thread overview]
Message-ID: <006401cd6f7c$e16605c0$a4321140$%jun@samsung.com> (raw)
In-Reply-To:
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>
---
drivers/mmc/host/dw_mmc.c | 4 +---
1 files changed, 1 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 7baed45..1a5db20 100644
--- 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) {
--
1.7.0.4
next reply other threads:[~2012-08-01 0:30 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-01 0:30 Seungwon Jeon [this message]
2012-08-08 3:19 ` [PATCH 2/3] mmc: dw_mmc: correct mishandling error interrupt Chris Ball
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