On Mon, Apr 14, 2014 at 6:42 PM, Andrew Bresticker <abrestic@xxxxxxxxxxxx> wrote: > If regulator_get_optional() returns EPROBE_DEFER, it indicates > that the regulator may show up later (e.g. the DT property is > present but the corresponding regulator may not have probed). > Instead of continuing without the regulator, return EPROBE_DEFER > from sdhci_add_host(). Also, fix regulator leaks in the error > paths in sdhci_add_host(). > > Signed-off-by: Andrew Bresticker <abrestic@xxxxxxxxxxxx> > --- > drivers/mmc/host/sdhci.c | 19 ++++++++++++++++--- > 1 file changed, 16 insertions(+), 3 deletions(-) This appears to be an improvement on Mike Looijmans patch: https://lkml.org/lkml/2014/4/7/34 The regulator_put() calls are appropriate but I wonder if we should take this a step farther. Ulf is sure to point out that mmc_regulator_get_supply() can be used to get regulators (though it does stuff the pointers in host->mmc->supply.vmmc/vqmmc instead of host->vmmc/vqmmc). However, that function doesn't put back the reference to vmmc if the request for vqmmc returns EPROBE_DEFER. If it did, it believe it could be used here to simplify the error handling as all the regulator checks would happen up front. What do you think? -Tim -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
