From: "Steffen Kühn" <sk@ammonit.com>
To: Ludovic Desroches <ludovic.desroches@atmel.com>,
Chris Ball <cjb@laptop.org>,
linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: "Steffen Kühn" <sk@ammonit.com>
Subject: [PATCH] mmc: atmel-mci: fix deadlock
Date: Wed, 9 May 2012 11:23:36 +0200 [thread overview]
Message-ID: <1336555416-14640-1-git-send-email-sk@ammonit.com> (raw)
solves a deadlock problem which appears when a mmc card is
removing and a process is reading from the card at the same time.
---
drivers/mmc/host/atmel-mci.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index e94476b..effdc36 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -1499,8 +1499,10 @@ static void atmci_tasklet_func(unsigned long priv)
}
if (!atmci_test_and_clear_pending(host,
- EVENT_XFER_COMPLETE))
+ EVENT_XFER_COMPLETE)) {
+ host->stop_transfer(host);
break;
+ }
atmci_set_completed(host, EVENT_XFER_COMPLETE);
prev_state = state = STATE_DATA_BUSY;
--
1.7.2.5
next reply other threads:[~2012-05-09 9:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-09 9:23 Steffen Kühn [this message]
[not found] ` <4FAA4ADA.1080008@atmel.com>
2012-05-09 12:12 ` Steffen Kühn
2012-05-15 16:05 ` Steffen Kühn
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