From mboxrd@z Thu Jan 1 00:00:00 1970 From: lee.jones@linaro.org (Lee Jones) Date: Fri, 3 May 2013 15:31:55 +0100 Subject: [PATCH 09/63] dmaengine: ste_dma40: Rectify incorrect configuration validation checking In-Reply-To: <1367591569-32197-1-git-send-email-lee.jones@linaro.org> References: <1367591569-32197-1-git-send-email-lee.jones@linaro.org> Message-ID: <1367591569-32197-10-git-send-email-lee.jones@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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. Signed-off-by: Lee Jones --- 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 3b83dee..c79853f 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -1771,19 +1771,19 @@ 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; } -- 1.7.10.4