From bb9cab941c7139304899fa7922f3069bb2097f4e Mon Sep 17 00:00:00 2001 From: Daniel Drake Date: Sun, 17 Jul 2011 16:38:41 +0100 Subject: [PATCH] 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 Signed-off-by: Chris Ball --- drivers/mmc/core/core.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index ab36c7b491f3..f091b43d00c4 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -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) { -- 2.20.1