github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-09 07:03:37 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

mmc: mxcmmc: fix falling back to PIO

Browse Source 
commit e58f516ff4 upstream.

When we can't configure the dma channel we want to fall
back to PIO. We do this by setting host->do_dma to zero.
This does not work as do_dma is used to see whether dma
can be used for the current transfer. Instead, we have
to set host->dma to NULL.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Sascha Hauer 2011-11-11 16:28:05 +01:00 committed by Greg Kroah-Hartman
parent cadacbdef3
commit 5382469396
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/mmc/host/mxcmmc.c
View File

@ -731,6 +731,7 @@ static void mxcmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
"failed to config DMA channel. Falling back to PIO\n");
dma_release_channel(host->dma);
host->do_dma = 0;
host->dma = NULL;
}
}