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From: balbi@ti.com (Felipe Balbi)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH REBASE 2/6] i2c: omap: also complete() when stat becomes zero
Date: Fri, 14 Dec 2012 18:34:05 +0200	[thread overview]
Message-ID: <1355502849-9289-3-git-send-email-balbi@ti.com> (raw)
In-Reply-To: <1355502849-9289-1-git-send-email-balbi@ti.com>

In case we loop on IRQ handler until stat is
finally zero, we would end up in a situation
where all I2C transfers would misteriously
timeout because we were not calling complete()
in that situation.

Fix the issue by moving omap_i2c_complete_cmd()
call inside the 'out' label.

Signed-off-by: Felipe Balbi <balbi@ti.com>
---
 drivers/i2c/busses/i2c-omap.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index 9a9cf7c..fcecb0b 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -1022,9 +1022,8 @@ omap_i2c_isr_thread(int this_irq, void *dev_id)
 		}
 	} while (stat);
 
-	omap_i2c_complete_cmd(dev, err);
-
 out:
+	omap_i2c_complete_cmd(dev, err);
 	spin_unlock_irqrestore(&dev->lock, flags);
 
 	return IRQ_HANDLED;
-- 
1.8.1.rc1.5.g7e0651a

  parent reply	other threads:[~2012-12-14 16:34 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-12-14 16:34 [PATCH REBASE 0/6] i2c: omap: misc changes Felipe Balbi
2012-12-14 16:34 ` [PATCH REBASE 1/6] i2c: omap: no need to access platform_device Felipe Balbi
2012-12-14 16:34 ` Felipe Balbi [this message]
2012-12-14 16:34 ` [PATCH REBASE 3/6] i2c: omap: improve 'rev' a little bit Felipe Balbi
2012-12-14 16:34 ` [PATCH REBASE 4/6] i2c: omap: in case of VERSION_2 read IRQSTATUS_RAW but write to IRQSTATUS Felipe Balbi
2012-12-14 16:34 ` [PATCH REBASE 5/6] i2c: omap: wait for transfer completion before sending STP bit Felipe Balbi
2012-12-14 16:34 ` [PATCH REBASE 6/6] i2c: omap: get rid of b_hw flag Felipe Balbi
2013-01-14 19:16 ` [PATCH REBASE 0/6] i2c: omap: misc changes Felipe Balbi
2013-01-23  9:58   ` Wolfram Sang

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