diff options
| author | Haibo Chen <haibo.chen@nxp.com> | 2017-04-17 17:43:00 +0800 |
|---|---|---|
| committer | Jason Liu <jason.hui.liu@nxp.com> | 2019-02-12 10:26:20 +0800 |
| commit | a6d7c9e3d49fec1d111ced36e2c4d9c8af079a3e (patch) | |
| tree | d4faf94bf02a1b84d8d7c025e8c86813bb971a70 /drivers/mmc | |
| parent | fd77d57c39d72d36f37cf3ca5a228aa6f8c45ce7 (diff) | |
MLK-14662 mmc: debugfs: add runtime pm when cat ios or clock file node
MMC core code add 'MMC_CAP_RUNTIME_RESUME', postpone the real card
resume operation from bus_resume to bus_runtime_resume. So after
system resume, for non-removable-card, it still not really resume.
At this point, if user cat the ios or clock node, only get zero
data although the mmc/sd card is still present.
This patch add mmc_get_card() to make sure card really resume back
when user cat ios or clock debugfs file node, then user can get the
correct information.
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/core/debugfs.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c index 0f4a7d7b2626..c97311174d31 100644 --- a/drivers/mmc/core/debugfs.c +++ b/drivers/mmc/core/debugfs.c @@ -58,6 +58,9 @@ static int mmc_ios_show(struct seq_file *s, void *data) struct mmc_ios *ios = &host->ios; const char *str; + if (host->card) + mmc_get_card(host->card); + seq_printf(s, "clock:\t\t%u Hz\n", ios->clock); if (host->actual_clock) seq_printf(s, "actual clock:\t%u Hz\n", host->actual_clock); @@ -194,6 +197,9 @@ static int mmc_ios_show(struct seq_file *s, void *data) } seq_printf(s, "driver type:\t%u (%s)\n", ios->drv_type, str); + if (host->card) + mmc_put_card(host->card); + return 0; } @@ -213,7 +219,11 @@ static int mmc_clock_opt_get(void *data, u64 *val) { struct mmc_host *host = data; + if (host->card) + mmc_get_card(host->card); *val = host->ios.clock; + if (host->card) + mmc_put_card(host->card); return 0; } |