Subject: [PATCH] ARM: OMAP: Fix the use of uninitialized dma_lch_count

From: [email-masked] (Chen Gang)
Date: Fri, 11 Jan 2013 13:39:18 +0800

'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 <[email-masked]>
Signed-off-by: Santosh Shilimkar <[email-masked]>
---
 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