Re: [PATCH v5 2/8] remoteproc: Use size_t instead of int for rproc_mem_entry len

From: Bjorn Andersson <bjorn.andersson@linaro.org>
To: Clement Leger <cleger@kalray.eu>
Cc: Ohad Ben-Cohen <ohad@wizery.com>,
	Jonathan Corbet <corbet@lwn.net>, Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	linux-remoteproc@vger.kernel.org,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>,
	NXP Linux Team <linux-imx@nxp.com>,
	Andy Gross <agross@kernel.org>,
	Patrice Chotard <patrice.chotard@st.com>,
	linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-arm-msm@vger.kernel.org,
	Arnaud Pouliquen <arnaud.pouliquen@st.com>,
	Loic PALLARDY <loic.pallardy@st.com>, s-anna <s-anna@ti.com>,
	Mathieu Poirier <mathieu.poirier@linaro.org>
Subject: Re: [PATCH v5 2/8] remoteproc: Use size_t instead of int for rproc_mem_entry len
Date: Mon, 2 Mar 2020 15:07:53 -0800	[thread overview]
Message-ID: <20200302230753.GB262924@yoga> (raw)
In-Reply-To: <20200302093902.27849-3-cleger@kalray.eu>

On Mon 02 Mar 01:38 PST 2020, Clement Leger wrote:

> Now that rproc_da_to_va uses a size_t for length, use a size_t for len field
> of rproc_mem_entry. Function used to create such structures now takes
> a size_t instead of int to allow full size range to be handled.
> 
> Signed-off-by: Clement Leger <cleger@kalray.eu>

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>

> ---
>  drivers/remoteproc/remoteproc_core.c    | 14 ++++++++------
>  drivers/remoteproc/remoteproc_debugfs.c |  2 +-
>  include/linux/remoteproc.h              |  6 +++---
>  3 files changed, 12 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
> index 5ab094fc1b55..4bfaf4a3c4a3 100644
> --- a/drivers/remoteproc/remoteproc_core.c
> +++ b/drivers/remoteproc/remoteproc_core.c
> @@ -318,8 +318,9 @@ int rproc_alloc_vring(struct rproc_vdev *rvdev, int i)
>  	struct device *dev = &rproc->dev;
>  	struct rproc_vring *rvring = &rvdev->vring[i];
>  	struct fw_rsc_vdev *rsc;
> -	int ret, size, notifyid;
> +	int ret, notifyid;
>  	struct rproc_mem_entry *mem;
> +	size_t size;
>  
>  	/* actual size of vring (in bytes) */
>  	size = PAGE_ALIGN(vring_size(rvring->len, rvring->align));
> @@ -746,11 +747,12 @@ static int rproc_alloc_carveout(struct rproc *rproc,
>  	va = dma_alloc_coherent(dev->parent, mem->len, &dma, GFP_KERNEL);
>  	if (!va) {
>  		dev_err(dev->parent,
> -			"failed to allocate dma memory: len 0x%x\n", mem->len);
> +			"failed to allocate dma memory: len 0x%zx\n",
> +			mem->len);
>  		return -ENOMEM;
>  	}
>  
> -	dev_dbg(dev, "carveout va %pK, dma %pad, len 0x%x\n",
> +	dev_dbg(dev, "carveout va %pK, dma %pad, len 0x%zx\n",
>  		va, &dma, mem->len);
>  
>  	if (mem->da != FW_RSC_ADDR_ANY && !rproc->domain) {
> @@ -957,7 +959,7 @@ EXPORT_SYMBOL(rproc_add_carveout);
>   */
>  struct rproc_mem_entry *
>  rproc_mem_entry_init(struct device *dev,
> -		     void *va, dma_addr_t dma, int len, u32 da,
> +		     void *va, dma_addr_t dma, size_t len, u32 da,
>  		     int (*alloc)(struct rproc *, struct rproc_mem_entry *),
>  		     int (*release)(struct rproc *, struct rproc_mem_entry *),
>  		     const char *name, ...)
> @@ -999,7 +1001,7 @@ EXPORT_SYMBOL(rproc_mem_entry_init);
>   * provided by client.
>   */
>  struct rproc_mem_entry *
> -rproc_of_resm_mem_entry_init(struct device *dev, u32 of_resm_idx, int len,
> +rproc_of_resm_mem_entry_init(struct device *dev, u32 of_resm_idx, size_t len,
>  			     u32 da, const char *name, ...)
>  {
>  	struct rproc_mem_entry *mem;
> @@ -1270,7 +1272,7 @@ static void rproc_resource_cleanup(struct rproc *rproc)
>  		unmapped = iommu_unmap(rproc->domain, entry->da, entry->len);
>  		if (unmapped != entry->len) {
>  			/* nothing much to do besides complaining */
> -			dev_err(dev, "failed to unmap %u/%zu\n", entry->len,
> +			dev_err(dev, "failed to unmap %zx/%zu\n", entry->len,
>  				unmapped);
>  		}
>  
> diff --git a/drivers/remoteproc/remoteproc_debugfs.c b/drivers/remoteproc/remoteproc_debugfs.c
> index dd93cf04e17f..82dc34b819df 100644
> --- a/drivers/remoteproc/remoteproc_debugfs.c
> +++ b/drivers/remoteproc/remoteproc_debugfs.c
> @@ -293,7 +293,7 @@ static int rproc_carveouts_show(struct seq_file *seq, void *p)
>  		seq_printf(seq, "\tVirtual address: %pK\n", carveout->va);
>  		seq_printf(seq, "\tDMA address: %pad\n", &carveout->dma);
>  		seq_printf(seq, "\tDevice address: 0x%x\n", carveout->da);
> -		seq_printf(seq, "\tLength: 0x%x Bytes\n\n", carveout->len);
> +		seq_printf(seq, "\tLength: 0x%zx Bytes\n\n", carveout->len);
>  	}
>  
>  	return 0;
> diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
> index 89215798eaea..bee559330204 100644
> --- a/include/linux/remoteproc.h
> +++ b/include/linux/remoteproc.h
> @@ -329,7 +329,7 @@ struct rproc;
>  struct rproc_mem_entry {
>  	void *va;
>  	dma_addr_t dma;
> -	int len;
> +	size_t len;
>  	u32 da;
>  	void *priv;
>  	char name[32];
> @@ -599,13 +599,13 @@ void rproc_add_carveout(struct rproc *rproc, struct rproc_mem_entry *mem);
>  
>  struct rproc_mem_entry *
>  rproc_mem_entry_init(struct device *dev,
> -		     void *va, dma_addr_t dma, int len, u32 da,
> +		     void *va, dma_addr_t dma, size_t len, u32 da,
>  		     int (*alloc)(struct rproc *, struct rproc_mem_entry *),
>  		     int (*release)(struct rproc *, struct rproc_mem_entry *),
>  		     const char *name, ...);
>  
>  struct rproc_mem_entry *
> -rproc_of_resm_mem_entry_init(struct device *dev, u32 of_resm_idx, int len,
> +rproc_of_resm_mem_entry_init(struct device *dev, u32 of_resm_idx, size_t len,
>  			     u32 da, const char *name, ...);
>  
>  int rproc_boot(struct rproc *rproc);
> -- 
> 2.15.0.276.g89ea799
> 