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linux-sg2042
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mmc: android-goldfish: use sg_copy_{from,to}_buffer 

This handles highmem pages, and also cleans up the code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Christoph Hellwig 2018-05-18 19:18:41 +02:00 committed by Ulf Hansson
parent 65f9e20e0d
commit 53d7e098ba
1 changed files with 4 additions and 4 deletions
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8
drivers/mmc/host/android-goldfish.c
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@ -217,8 +217,8 @@ static void goldfish_mmc_xfer_done(struct goldfish_mmc_host *host,
* We don't really have DMA, so we need
* to copy from our platform driver buffer
*/
uint8_t *dest = (uint8_t *)sg_virt(data->sg);
memcpy(dest, host->virt_base, data->sg->length);
sg_copy_to_buffer(data->sg, 1, host->virt_base,
data->sg->length);
}
host->data->bytes_xfered += data->sg->length;
dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->sg_len,
@ -393,8 +393,8 @@ static void goldfish_mmc_prepare_data(struct goldfish_mmc_host *host,
* We don't really have DMA, so we need to copy to our
* platform driver buffer
*/
const uint8_t *src = (uint8_t *)sg_virt(data->sg);
memcpy(host->virt_base, src, data->sg->length);
sg_copy_from_buffer(data->sg, 1, host->virt_base,
data->sg->length);
}
}