target/linux/generic/backport-6.1/424-v6.4-0004-mtd-core-prepare-mtd_otp_nvmem_add-to-handle-EPROBE_.patch

   1 From 281f7a6c1a33fffcde32001bacbb4f672140fbf9 Mon Sep 17 00:00:00 2001
   2 From: Michael Walle <michael@walle.cc>
   3 Date: Wed, 8 Mar 2023 09:20:21 +0100
   4 Subject: [PATCH] mtd: core: prepare mtd_otp_nvmem_add() to handle
   5  -EPROBE_DEFER
   6
   7 NVMEM soon will get the ability for nvmem layouts and these might
   8 not be ready when nvmem_register() is called and thus it might
   9 return -EPROBE_DEFER. Don't print the error message in this case.
  10
  11 Signed-off-by: Michael Walle <michael@walle.cc>
  12 Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
  13 Link: https://lore.kernel.org/linux-mtd/20230308082021.870459-4-michael@walle.cc
  14 ---
  15  drivers/mtd/mtdcore.c | 7 +++----
  16  1 file changed, 3 insertions(+), 4 deletions(-)
  17
  18 --- a/drivers/mtd/mtdcore.c
  19 +++ b/drivers/mtd/mtdcore.c
  20 @@ -953,8 +953,8 @@ static int mtd_otp_nvmem_add(struct mtd_
  21                         nvmem = mtd_otp_nvmem_register(mtd, "user-otp", size,
  22                                                        mtd_nvmem_user_otp_reg_read);
  23                         if (IS_ERR(nvmem)) {
  24 -                               dev_err(dev, "Failed to register OTP NVMEM device\n");
  25 -                               return PTR_ERR(nvmem);
  26 +                               err = PTR_ERR(nvmem);
  27 +                               goto err;
  28                         }
  29                         mtd->otp_user_nvmem = nvmem;
  30                 }
  31 @@ -971,7 +971,6 @@ static int mtd_otp_nvmem_add(struct mtd_
  32                         nvmem = mtd_otp_nvmem_register(mtd, "factory-otp", size,
  33                                                        mtd_nvmem_fact_otp_reg_read);
  34                         if (IS_ERR(nvmem)) {
  35 -                               dev_err(dev, "Failed to register OTP NVMEM device\n");
  36                                 err = PTR_ERR(nvmem);
  37                                 goto err;
  38                         }
  39 @@ -983,7 +982,7 @@ static int mtd_otp_nvmem_add(struct mtd_
  40
  41  err:
  42         nvmem_unregister(mtd->otp_user_nvmem);
  43 -       return err;
  44 +       return dev_err_probe(dev, err, "Failed to register OTP NVMEM device\n");
  45  }
  46
  47  /**