From: Peter Ujfalusi <peter.ujfalusi@ti.com> To: <vkoul@kernel.org> Cc: <dmaengine@vger.kernel.org>, <dan.j.williams@intel.com>, <linux-arm-kernel@lists.infradead.org>, <linux-kernel@vger.kernel.org> Subject: [PATCH] dmaengine: of-dma: Fix of_dma_router_xlate's of_dma_xlate handling Date: Thu, 6 Aug 2020 13:49:28 +0300 [thread overview] Message-ID: <20200806104928.25975-1-peter.ujfalusi@ti.com> (raw) of_dma_xlate callback can return ERR_PTR as well NULL in case of failure. If error code is returned (not NULL) then the route should be released and the router should not be registered for the channel. Fixes: 56f13c0d9524c ("dmaengine: of_dma: Support for DMA routers") Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> --- drivers/dma/of-dma.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/dma/of-dma.c b/drivers/dma/of-dma.c index 863f2aaf5c8f..8a4f608904b9 100644 --- a/drivers/dma/of-dma.c +++ b/drivers/dma/of-dma.c @@ -71,12 +71,12 @@ static struct dma_chan *of_dma_router_xlate(struct of_phandle_args *dma_spec, return NULL; chan = ofdma_target->of_dma_xlate(&dma_spec_target, ofdma_target); - if (chan) { - chan->router = ofdma->dma_router; - chan->route_data = route_data; - } else { + if (IS_ERR_OR_NULL(chan)) { ofdma->dma_router->route_free(ofdma->dma_router->dev, route_data); + } else { + chan->router = ofdma->dma_router; + chan->route_data = route_data; } /* -- Peter Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
WARNING: multiple messages have this Message-ID (diff)
From: Peter Ujfalusi <peter.ujfalusi@ti.com> To: <vkoul@kernel.org> Cc: dmaengine@vger.kernel.org, dan.j.williams@intel.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH] dmaengine: of-dma: Fix of_dma_router_xlate's of_dma_xlate handling Date: Thu, 6 Aug 2020 13:49:28 +0300 [thread overview] Message-ID: <20200806104928.25975-1-peter.ujfalusi@ti.com> (raw) of_dma_xlate callback can return ERR_PTR as well NULL in case of failure. If error code is returned (not NULL) then the route should be released and the router should not be registered for the channel. Fixes: 56f13c0d9524c ("dmaengine: of_dma: Support for DMA routers") Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> --- drivers/dma/of-dma.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/dma/of-dma.c b/drivers/dma/of-dma.c index 863f2aaf5c8f..8a4f608904b9 100644 --- a/drivers/dma/of-dma.c +++ b/drivers/dma/of-dma.c @@ -71,12 +71,12 @@ static struct dma_chan *of_dma_router_xlate(struct of_phandle_args *dma_spec, return NULL; chan = ofdma_target->of_dma_xlate(&dma_spec_target, ofdma_target); - if (chan) { - chan->router = ofdma->dma_router; - chan->route_data = route_data; - } else { + if (IS_ERR_OR_NULL(chan)) { ofdma->dma_router->route_free(ofdma->dma_router->dev, route_data); + } else { + chan->router = ofdma->dma_router; + chan->route_data = route_data; } /* -- Peter Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2020-08-06 20:59 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-08-06 10:49 Peter Ujfalusi [this message] 2020-08-06 10:49 ` [PATCH] dmaengine: of-dma: Fix of_dma_router_xlate's of_dma_xlate handling Peter Ujfalusi 2020-08-17 5:44 ` Vinod Koul 2020-08-17 5:44 ` Vinod Koul
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