It needs to check suspend/resume hooks before calling them to avoid call trace during hibernation.
Signed-off-by: Yangbo Lu <[email protected]> --- drivers/mmc/core/bus.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c index 972ff84..fc6b5e5 100644 --- a/drivers/mmc/core/bus.c +++ b/drivers/mmc/core/bus.c @@ -154,7 +154,8 @@ static int mmc_bus_suspend(struct device *dev) if (ret) return ret; - ret = host->bus_ops->suspend(host); + if (host->bus_ops->suspend) + ret = host->bus_ops->suspend(host); return ret; } @@ -164,10 +165,12 @@ static int mmc_bus_resume(struct device *dev) struct mmc_host *host = card->host; int ret; - ret = host->bus_ops->resume(host); - if (ret) - pr_warn("%s: error %d during resume (card was removed?)\n", - mmc_hostname(host), ret); + if (host->bus_ops->resume) { + ret = host->bus_ops->resume(host); + if (ret) + pr_warn("%s: error %d during resume (card was removed?)\n", + mmc_hostname(host), ret); + } ret = pm_generic_resume(dev); return ret; -- 2.1.0.27.g96db324 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
