On Mon, Jan 22, 2018 at 9:33 AM, Benjamin Beckmeyer
<beckmeyer.b@xxxxxxxxx> wrote:
> Hey Linus,
>
>> Annoying ... since the i.MX and x86 PCI version so clearly differs
>> here I'm left to trial and error over the mailing list.
>
> I know, can I do something that it makes it easier for you?
It's just how it is. Let's use mails and brains for debugging :D
>> Could you try this on top of the patch?
>
> Built in and here is the output. I think, it's what you want,
> but it doesn't work either.
OK that doesn't work. Scratch that patch. What about this instead?
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 25b5e598ee6d..416e94dead4f 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -523,7 +523,7 @@ static int sdhci_pre_dma_transfer(struct sdhci_host *host,
dma_sync_single_for_device(host->mmc->parent,
host->bounce_addr,
host->bounce_buffer_size,
- DMA_TO_DEVICE);
+ mmc_get_dma_dir(data));
/* Just a dummy value */
sg_count = 1;
} else {
@@ -2422,6 +2422,12 @@ static bool sdhci_request_done(struct sdhci_host *host)
data->sg_len,
host->bounce_buffer,
length);
+ } else {
+ dma_sync_single_for_cpu(
+ host->mmc->parent,
+ host->bounce_addr,
+ host->bounce_buffer_size,
+ mmc_get_dma_dir(data));
}
} else {
/* Unmap the raw data */
Yours,
Linus Walleij
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