From: SF Markus Elfring <elfring@users.sourceforge.net> To: dmaengine@vger.kernel.org, Dan Williams <dan.j.williams@intel.com>, Vinod Koul <vinod.koul@intel.com>, Zhangfei Gao <zhangfei.gao@linaro.org> Cc: LKML <linux-kernel@vger.kernel.org>, kernel-janitors@vger.kernel.org Subject: [PATCH 1/2] dmaengine: k3dma: Use devm_kcalloc() in k3_dma_probe() Date: Sun, 23 Apr 2017 11:07:43 +0200 [thread overview] Message-ID: <3f5acfa7-3c12-e8e1-17dd-ae03ce45c0be@users.sourceforge.net> (raw) In-Reply-To: <f83beedc-28fd-c373-cca8-7261e42577a5@users.sourceforge.net> From: Markus Elfring <elfring@users.sourceforge.net> Date: Sun, 23 Apr 2017 10:30:32 +0200 * Multiplications for the size determination of memory allocations indicated that array data structures should be processed. Thus use the corresponding function "devm_kcalloc". This issue was detected by using the Coccinelle software. * Replace the specification of data structures by pointer dereferences to make the corresponding size determination a bit safer according to the Linux coding style convention. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> --- drivers/dma/k3dma.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/dma/k3dma.c b/drivers/dma/k3dma.c index 01e25c68dd5a..31a51ee1a910 100644 --- a/drivers/dma/k3dma.c +++ b/drivers/dma/k3dma.c @@ -845,8 +845,8 @@ static int k3_dma_probe(struct platform_device *op) return -ENOMEM; /* init phy channel */ - d->phy = devm_kzalloc(&op->dev, - d->dma_channels * sizeof(struct k3_dma_phy), GFP_KERNEL); + d->phy = devm_kcalloc(&op->dev, d->dma_channels, sizeof(*d->phy), + GFP_KERNEL); if (d->phy == NULL) return -ENOMEM; @@ -875,8 +875,8 @@ static int k3_dma_probe(struct platform_device *op) d->slave.copy_align = DMAENGINE_ALIGN_8_BYTES; /* init virtual channel */ - d->chans = devm_kzalloc(&op->dev, - d->dma_requests * sizeof(struct k3_dma_chan), GFP_KERNEL); + d->chans = devm_kcalloc(&op->dev, d->dma_requests, sizeof(*d->chans), + GFP_KERNEL); if (d->chans == NULL) return -ENOMEM; -- 2.12.2
WARNING: multiple messages have this Message-ID (diff)
From: SF Markus Elfring <elfring@users.sourceforge.net> To: dmaengine@vger.kernel.org, Dan Williams <dan.j.williams@intel.com>, Vinod Koul <vinod.koul@intel.com>, Zhangfei Gao <zhangfei.gao@linaro.org> Cc: LKML <linux-kernel@vger.kernel.org>, kernel-janitors@vger.kernel.org Subject: [PATCH 1/2] dmaengine: k3dma: Use devm_kcalloc() in k3_dma_probe() Date: Sun, 23 Apr 2017 09:07:43 +0000 [thread overview] Message-ID: <3f5acfa7-3c12-e8e1-17dd-ae03ce45c0be@users.sourceforge.net> (raw) In-Reply-To: <f83beedc-28fd-c373-cca8-7261e42577a5@users.sourceforge.net> From: Markus Elfring <elfring@users.sourceforge.net> Date: Sun, 23 Apr 2017 10:30:32 +0200 * Multiplications for the size determination of memory allocations indicated that array data structures should be processed. Thus use the corresponding function "devm_kcalloc". This issue was detected by using the Coccinelle software. * Replace the specification of data structures by pointer dereferences to make the corresponding size determination a bit safer according to the Linux coding style convention. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> --- drivers/dma/k3dma.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/dma/k3dma.c b/drivers/dma/k3dma.c index 01e25c68dd5a..31a51ee1a910 100644 --- a/drivers/dma/k3dma.c +++ b/drivers/dma/k3dma.c @@ -845,8 +845,8 @@ static int k3_dma_probe(struct platform_device *op) return -ENOMEM; /* init phy channel */ - d->phy = devm_kzalloc(&op->dev, - d->dma_channels * sizeof(struct k3_dma_phy), GFP_KERNEL); + d->phy = devm_kcalloc(&op->dev, d->dma_channels, sizeof(*d->phy), + GFP_KERNEL); if (d->phy = NULL) return -ENOMEM; @@ -875,8 +875,8 @@ static int k3_dma_probe(struct platform_device *op) d->slave.copy_align = DMAENGINE_ALIGN_8_BYTES; /* init virtual channel */ - d->chans = devm_kzalloc(&op->dev, - d->dma_requests * sizeof(struct k3_dma_chan), GFP_KERNEL); + d->chans = devm_kcalloc(&op->dev, d->dma_requests, sizeof(*d->chans), + GFP_KERNEL); if (d->chans = NULL) return -ENOMEM; -- 2.12.2
next prev parent reply other threads:[~2017-04-23 9:08 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-04-23 9:06 [PATCH 0/2] dmaengine: k3dma: Fine-tuning for five function implementations SF Markus Elfring 2017-04-23 9:06 ` SF Markus Elfring 2017-04-23 9:07 ` SF Markus Elfring [this message] 2017-04-23 9:07 ` [PATCH 1/2] dmaengine: k3dma: Use devm_kcalloc() in k3_dma_probe() SF Markus Elfring 2017-04-23 9:09 ` [PATCH 2/2] dmaengine: k3dma: Adjust six checks for null pointers SF Markus Elfring 2017-04-23 9:09 ` SF Markus Elfring
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