From: gang.chen@asianux•com (Chen Gang)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH] ARM: OMAP: Fix the use of uninitialized dma_lch_count
Date: Fri, 11 Jan 2013 13:39:18 +0800 [thread overview]
Message-ID: <50EFA586.5010508@asianux.com> (raw)
In-Reply-To: <50EE9C87.6060407@ti.com>
'omap_dma_reserve_channels' when used is suppose to be from command.
so, it alreay has value before 1st call of omap_system_dma_probe.
and it will never be changed again during running (not from ioctl).
but 'dma_lch_count' is zero before 1st call of omap_system_dma_probe.
so it will be failed for omap_dma_reserve_channels, when 1st call.
so, need use 'd->lch_count' instead of 'dma_lch_count' for judging.
Signed-off-by: Chen Gang <gang.chen@asianux•com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti•com>
---
arch/arm/plat-omap/dma.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
index 4136b20..e06c34b 100644
--- a/arch/arm/plat-omap/dma.c
+++ b/arch/arm/plat-omap/dma.c
@@ -2019,7 +2019,7 @@ static int omap_system_dma_probe(struct platform_device *pdev)
errata = p->errata;
if ((d->dev_caps & RESERVE_CHANNEL) && omap_dma_reserve_channels
- && (omap_dma_reserve_channels <= dma_lch_count))
+ && (omap_dma_reserve_channels < d->lch_count))
d->lch_count = omap_dma_reserve_channels;
dma_lch_count = d->lch_count;
--
1.7.10.4
next prev parent reply other threads:[~2013-01-11 5:39 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-10 10:29 [PATCH] arch/arm/plat-omap: initializing dma_lch_count, before judging omap_dma_reserve_channels Chen Gang
2013-01-10 10:48 ` Santosh Shilimkar
2013-01-10 10:51 ` Santosh Shilimkar
2013-01-11 5:09 ` Chen Gang
2013-01-11 5:03 ` Chen Gang
2013-01-11 7:26 ` Santosh Shilimkar
2013-01-11 11:24 ` Chen Gang
2013-01-11 5:39 ` Chen Gang [this message]
2013-01-11 11:38 ` [PATCH] ARM: OMAP: Fix the use of uninitialized dma_lch_count Santosh Shilimkar
2013-02-01 22:40 ` Tony Lindgren
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