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SubjectRe: [PATCH 02/12] crypto: caam - use devres to unmap JR's registers
Hi Andrey,

On Tue, Sep 3, 2019 at 11:37 PM Andrey Smirnov <andrew.smirnov@gmail.com> wrote:
>
> Use devres to unmap memory and drop explicit de-initialization
> code.
>
> NOTE: There's no corresponding unmapping code in caam_jr_remove which
> seems like a resource leak.
>
> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
> Cc: Chris Healy <cphealy@gmail.com>
> Cc: Lucas Stach <l.stach@pengutronix.de>
> Cc: Horia Geantă <horia.geanta@nxp.com>
> Cc: Herbert Xu <herbert@gondor.apana.org.au>
> Cc: Iuliana Prodan <iuliana.prodan@nxp.com>
> Cc: linux-crypto@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
> ---
> drivers/crypto/caam/jr.c | 13 +++++++++----
> 1 file changed, 9 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/crypto/caam/jr.c b/drivers/crypto/caam/jr.c
> index 417ad52615c6..7947d61a25cf 100644
> --- a/drivers/crypto/caam/jr.c
> +++ b/drivers/crypto/caam/jr.c
> @@ -498,6 +498,7 @@ static int caam_jr_probe(struct platform_device *pdev)
> struct caam_job_ring __iomem *ctrl;
> struct caam_drv_private_jr *jrpriv;
> static int total_jobrs;
> + struct resource *r;
> int error;
>
> jrdev = &pdev->dev;
> @@ -513,9 +514,15 @@ static int caam_jr_probe(struct platform_device *pdev)
> nprop = pdev->dev.of_node;
> /* Get configuration properties from device tree */
> /* First, get register page */
> - ctrl = of_iomap(nprop, 0);
> + r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + if (!r) {
> + dev_err(jrdev, "platform_get_resource() failed\n");
> + return -ENOMEM;
> + }
> +
> + ctrl = devm_ioremap(jrdev, r->start, resource_size(r));

It seems that using devm_platform_ioremap_resource() could make the
code even smaller.

Regards,

Fabio Estevam

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