From: Thomas Fourier <fourier.thomas@gmail.com>
Cc: "Thomas Fourier" <fourier.thomas@gmail.com>,
"Ulf Hansson" <ulf.hansson@linaro.org>,
"Florian Fainelli" <florian.fainelli@broadcom.com>,
"Ray Jui" <rjui@broadcom.com>,
"Scott Branden" <sbranden@broadcom.com>,
"Broadcom internal kernel review list"
<bcm-kernel-feedback-list@broadcom.com>,
"Stefan Wahren" <wahrenst@gmx.net>,
"Uwe Kleine-König" <u.kleine-koenig@baylibre.com>,
"Yumeng Fang" <fang.yumeng@zte.com.cn>,
"Eric Anholt" <eric@anholt.net>,
linux-mmc@vger.kernel.org, linux-rpi-kernel@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] mmc: bcm2835: Fix dma_unmap_sg() nents value
Date: Mon, 30 Jun 2025 11:35:07 +0200 [thread overview]
Message-ID: <20250630093510.82871-2-fourier.thomas@gmail.com> (raw)
The dma_unmap_sg() functions should be called with the same nents as the
dma_map_sg(), not the value the map function returned.
Fixes: 2f5da678351f ("mmc: bcm2835: Properly handle dmaengine_prep_slave_sg")
Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
---
drivers/mmc/host/bcm2835.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c
index def054ddd256..4fced9b36c80 100644
--- a/drivers/mmc/host/bcm2835.c
+++ b/drivers/mmc/host/bcm2835.c
@@ -503,7 +503,8 @@ void bcm2835_prepare_dma(struct bcm2835_host *host, struct mmc_data *data)
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!desc) {
- dma_unmap_sg(dma_chan->device->dev, data->sg, sg_len, dir_data);
+ dma_unmap_sg(dma_chan->device->dev, data->sg, data->sg_len,
+ dir_data);
return;
}
--
2.43.0
next reply other threads:[~2025-06-30 9:35 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-30 9:35 Thomas Fourier [this message]
2025-07-03 12:19 ` Ulf Hansson
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