Commit bb9cab94 authored Jul 17, 2011 by Daniel Drake Committed by Chris Ball Jul 21, 2011

mmc: print debug messages for runtime PM actions

At http://www.mail-archive.com/linux-mmc@vger.kernel.org/msg08371.html


(thread: "mmc: sdio: reset card during power_restore") we found and
fixed a bug where mmc's runtime power management functions were not being
called. We have now also made improvements to the SDIO powerup routine
which could possibly mask this kind of issue in future.

Add debug messages to the runtime PM hooks so that it is easy to verify
if and when runtime PM is happening.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

parent ecc02441

drivers/mmc/core/core.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -1832,6 +1832,10 @@ int mmc_power_save_host(struct mmc_host *host)
		{
		int ret = 0;

		#ifdef CONFIG_MMC_DEBUG
		pr_info("%s: %s: powering down\n", mmc_hostname(host), __func__);
		#endif

		mmc_bus_get(host);

		if (!host->bus_ops \|\| host->bus_dead \|\| !host->bus_ops->power_restore) {
		@@ -1854,6 +1858,10 @@ int mmc_power_restore_host(struct mmc_host *host)
		{
		int ret;

		#ifdef CONFIG_MMC_DEBUG
		pr_info("%s: %s: powering up\n", mmc_hostname(host), __func__);
		#endif

		mmc_bus_get(host);

		if (!host->bus_ops \|\| host->bus_dead \|\| !host->bus_ops->power_restore) {