From 344fa142ddc8d2316d0fc30eddf32bf56d19c01f Mon Sep 17 00:00:00 2001 From: Ulf Hansson Date: Mon, 14 Sep 2015 12:18:55 +0200 Subject: mmc: core: Don't return an error for CD/WP GPIOs when GPIOLIB is unset commit 43934ece2ea72c1dd279c0b0478c1a036d5d77ee upstream. When CONFIG_GPIOLIB is unset, its stubs will return -ENOSYS. That means when the mmc core parses DT for CD/WP GPIOs via mmc_of_parse(), -ENOSYS becomes propagated to the caller. Typically this means that the mmc host driver fails to probe. As the CD/WP GPIOs are already treated as optional, let's extend that to cover the case when CONFIG_GPIOLIB is unset. Reported-by: Michal Simek Fixes: 16b23787fc70 ("mmc: sdhci-of-arasan: Call OF parsing for MMC") Signed-off-by: Ulf Hansson Tested-by: Michal Simek Acked-by: Venu Byravarasu Signed-off-by: Greg Kroah-Hartman --- drivers/mmc/core/host.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index 8be0df758e68..a0b1b460377d 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -373,7 +373,7 @@ int mmc_of_parse(struct mmc_host *host) 0, &cd_gpio_invert); if (!ret) dev_info(host->parent, "Got CD GPIO\n"); - else if (ret != -ENOENT) + else if (ret != -ENOENT && ret != -ENOSYS) return ret; /* @@ -397,7 +397,7 @@ int mmc_of_parse(struct mmc_host *host) ret = mmc_gpiod_request_ro(host, "wp", 0, false, 0, &ro_gpio_invert); if (!ret) dev_info(host->parent, "Got WP GPIO\n"); - else if (ret != -ENOENT) + else if (ret != -ENOENT && ret != -ENOSYS) return ret; /* See the comment on CD inversion above */ -- cgit v1.2.3