mmc: sdhci: further fix for DMA unmapping in sdhci_post_req()

sdhci_post_req() exists to unmap a previously mapped but already
finished request, while the next request is in progress.  However, the
state of the SDHCI_REQ_USE_DMA flag depends on the last submitted
request.

This means we can end up clearing the flag due to a quirk, which then
means that sdhci_post_req() fails to unmap the DMA buffer, potentially
leading to data corruption.

We can safely ignore the SDHCI_REQ_USE_DMA here, as testing
data->host_cookie is entirely sufficient.

Signed-off-by: Russell King <[email protected]>
[ Re-based to apply as a separate fix ]
Signed-off-by: Adrian Hunter <[email protected]>
Cc: [email protected] # v4.5+
Tested-by: Gregory CLEMENT <[email protected]>
Signed-off-by: Ulf Hansson <[email protected]>

0 files changed, 0 insertions, 0 deletions