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mmc: bcm2835: Fix dma_unmap_sg() nents value

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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: 2f5da67835 ("mmc: bcm2835: Properly handle dmaengine_prep_slave_sg")
Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20250630093510.82871-2-fourier.thomas@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Thomas Fourier 2025-06-30 11:35:07 +02:00 committed by Ulf Hansson
parent 6d0b1c0184
commit ff09b71bf9
1 changed files with 2 additions and 1 deletions
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3
drivers/mmc/host/bcm2835.c
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@ -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;
}