The regulator subsystem provides stubbed out versions of its calls that
are always present (so that they can be used without needing #ifdefs).
But the regulator_get() stub always returns an error value according
to IS_ERR(), which leads sdhci to print messages like "mmc0: no vmmc
regulator found" on every boot, even if CONFIG_REGULATOR is not set.
This patch fixes that (and removes the unwanted message) by having
the regulator_get() call occur inside an #ifdef CONFIG_REGULATOR.
Reported-by: Jaehoon Chung <jh80.ch...@samsung.com>
Signed-off-by: Chris Ball <c...@laptop.org>
---
drivers/mmc/host/sdhci.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index e5cfe70..e29e77a 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -2059,15 +2059,17 @@ int sdhci_add_host(struct sdhci_host *host)
mmc_hostname(mmc), host);
if (ret)
goto untasklet;
+#ifdef CONFIG_REGULATOR
host->vmmc = regulator_get(mmc_dev(mmc), "vmmc");
if (IS_ERR(host->vmmc)) {
printk(KERN_INFO "%s: no vmmc regulator found\n",
mmc_hostname(mmc));
host->vmmc = NULL;
} else {
regulator_enable(host->vmmc);
}
+#endif /* CONFIG_REGULATOR */
sdhci_init(host, 0);
#ifdef CONFIG_MMC_DEBUG
--
Chris Ball <c...@laptop.org> <http://printf.net/>
One Laptop Per Child
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