From: Lee Jones Date: Fri, 3 May 2013 14:31:55 +0000 (+0100) Subject: dmaengine: ste_dma40: Rectify incorrect configuration validation checking X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4f8fc46c797015dddc1d4c76e1b485b57373683b;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git 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 --- diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index c47139ae8fa8..d481cb8521d9 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; }