target/linux/layerscape/patches-5.4/804-crypto-0036-LF-933-crypto-caam-fix-iosource-busy-issue.patch

   1 From 4f59ceff69a20d28881848140ef5fc2888042e62 Mon Sep 17 00:00:00 2001
   2 From: Gagandeep Singh <g.singh@nxp.com>
   3 Date: Mon, 17 Feb 2020 16:41:01 +0000
   4 Subject: [PATCH] LF-933: crypto: caam: fix iosource busy issue
   5
   6 The caam controller driver claims the ownership of the
   7 whole caam register space due to which while binding the
   8 Job Ring to fsl-jr-uio driver, it returns IOSOURCE_BUSY
   9 error.
  10
  11 This patch replaces devm_request_mem_region() API with
  12 platform_get_resource() to avoid this issue.
  13
  14 Fixes: eb5e94d4624a ("crypto: caam - use devres to unmap memory")
  15
  16 Signed-off-by: Gagandeep Singh <g.singh@nxp.com>
  17 Acked-by: Horia Geanta <horia.geanta@nxp.com>
  18 ---
  19  drivers/crypto/caam/fsl_jr_uio.c | 7 +++----
  20  1 file changed, 3 insertions(+), 4 deletions(-)
  21
  22 --- a/drivers/crypto/caam/fsl_jr_uio.c
  23 +++ b/drivers/crypto/caam/fsl_jr_uio.c
  24 @@ -187,11 +187,10 @@ static int fsl_jr_probe(struct platform_
  25                 goto abort;
  26         }
  27
  28 -       jr_dev->res = devm_request_mem_region(&dev->dev, regs.start,
  29 -                                             regs.end - regs.start + 1,
  30 -                                             jr_dev->info.name);
  31 +
  32 +       jr_dev->res = platform_get_resource(dev, IORESOURCE_MEM, 0);
  33         if (unlikely(!jr_dev->res)) {
  34 -               dev_err(jr_dev->dev, "devm_request_mem_region failed\n");
  35 +               dev_err(jr_dev->dev, "platform_get_resource() failed\n");
  36                 ret = -ENOMEM;
  37                 goto abort;
  38         }