target/linux/bcm27xx/patches-6.1/950-0537-bcm2835-mmc-Honor-return-value-of-mmc_of_parse.patch

   1 From a29e90b43912193131804427e133d1869695044f Mon Sep 17 00:00:00 2001
   2 From: Lukas Wunner <lukas@wunner.de>
   3 Date: Sat, 14 Jan 2023 10:03:46 +0100
   4 Subject: [PATCH] bcm2835-mmc: Honor return value of mmc_of_parse()
   5
   6 bcm2835_mmc_probe() ignores errors returned by mmc_of_parse() and in
   7 particular ignores -EPROBE_DEFER, which may be returned if the power
   8 sequencing driver configured in the devicetree is compiled as a module.
   9
  10 The user-visible result is that access to the SDIO device fails because
  11 its power sequencing requirements have not been observed.  Fix it.
  12
  13 Signed-off-by: Lukas Wunner <lukas@wunner.de>
  14 ---
  15  drivers/mmc/host/bcm2835-mmc.c | 4 +++-
  16  1 file changed, 3 insertions(+), 1 deletion(-)
  17
  18 --- a/drivers/mmc/host/bcm2835-mmc.c
  19 +++ b/drivers/mmc/host/bcm2835-mmc.c
  20 @@ -1474,7 +1474,9 @@ static int bcm2835_mmc_probe(struct plat
  21         }
  22
  23         if (node) {
  24 -               mmc_of_parse(mmc);
  25 +               ret = mmc_of_parse(mmc);
  26 +               if (ret)
  27 +                       goto err;
  28
  29                 /* Read any custom properties */
  30                 of_property_read_u32(node,