linux-kernel - [PATCH v5 02/12] omap_hsmmc: use original sg_len for dma_unmap

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Message-Id: <1308430526-9412-3-git-send-email-per.forlin@linaro.org>
Date:	Sat, 18 Jun 2011 22:55:16 +0200
From:	Per Forlin <per.forlin@...aro.org>
To:	linux-mmc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linaro-dev@...ts.linaro.org,
	Venkatraman S <svenkatr@...com>
Cc:	Chris Ball <cjb@...top.org>, Per Forlin <per.forlin@...aro.org>
Subject: [PATCH v5 02/12] omap_hsmmc: use original sg_len for dma_unmap_sg

Don't use the returned sg_len from dma_map_sg() as inparameter
to dma_unmap_sg(). Use the original sg_len for both dma_map_sg
and dma_unmap_sg according to the documentation in DMA-API.txt.

Signed-off-by: Per Forlin <per.forlin@...aro.org>
Reviewed-by: Venkatraman S <svenkatr@...com>
---
 drivers/mmc/host/omap_hsmmc.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 5b2e215..abea10f 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -962,7 +962,8 @@ static void omap_hsmmc_dma_cleanup(struct omap_hsmmc_host *host, int errno)
 	spin_unlock(&host->irq_lock);
 
 	if (host->use_dma && dma_ch != -1) {
-		dma_unmap_sg(mmc_dev(host->mmc), host->data->sg, host->dma_len,
+		dma_unmap_sg(mmc_dev(host->mmc), host->data->sg,
+			host->data->sg_len,
 			omap_hsmmc_get_dma_dir(host, host->data));
 		omap_free_dma(dma_ch);
 	}
@@ -1346,7 +1347,7 @@ static void omap_hsmmc_dma_cb(int lch, u16 ch_status, void *cb_data)
 		return;
 	}
 
-	dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->dma_len,
+	dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
 		omap_hsmmc_get_dma_dir(host, data));
 
 	req_in_progress = host->req_in_progress;
-- 
1.7.4.1

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