From 4f8fc46c797015dddc1d4c76e1b485b57373683b Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Fri, 3 May 2013 15:31:55 +0100 Subject: [PATCH] dmaengine: ste_dma40: Rectify incorrect configuration validation checking If we compare an event's group (dev_type / 16) with STEDMA40_DEV_DST_MEMORY (-1), the only way we'd obtain a positive result is if we passed -16 as a device type, which is unfeasible. Instead, it would be much more sane to compare STEDMA40_DEV_DST_MEMORY against the raw dev_type in order to expect the expected result. Acked-by: Vinod Koul Signed-off-by: Lee Jones Signed-off-by: Linus Walleij --- drivers/dma/ste_dma40.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index c47139a..d481cb8 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -1785,19 +1785,19 @@ static int d40_validate_conf(struct d40_chan *d40c, } if (conf->dir == STEDMA40_MEM_TO_PERIPH && - dst_event_group == STEDMA40_DEV_DST_MEMORY) { + conf->dst_dev_type == STEDMA40_DEV_DST_MEMORY) { chan_err(d40c, "Invalid dst\n"); res = -EINVAL; } if (conf->dir == STEDMA40_PERIPH_TO_MEM && - src_event_group == STEDMA40_DEV_SRC_MEMORY) { + conf->src_dev_type == STEDMA40_DEV_SRC_MEMORY) { chan_err(d40c, "Invalid src\n"); res = -EINVAL; } - if (src_event_group == STEDMA40_DEV_SRC_MEMORY && - dst_event_group == STEDMA40_DEV_DST_MEMORY && is_log) { + if (conf->src_dev_type == STEDMA40_DEV_SRC_MEMORY && + conf->dst_dev_type == STEDMA40_DEV_DST_MEMORY && is_log) { chan_err(d40c, "No event line\n"); res = -EINVAL; } -- 2.7.4