renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-23 20:53:53 +08:00
Code

mmc: sdhci: Deal with failure case in sdhci_suspend_host

Browse Source 
If there are errors happened in sdhci_suspend_host, handle it so that
when the function returns with an error, the host's behaviour is the
same before this function call, e.g. card detection is enabled and
tuning timer is active, etc.

Signed-off-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Aaron Lu <aaron.lu@amd.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Aaron Lu 2012-01-04 10:07:43 +08:00 committed by Chris Ball
parent 3f514291df
commit 38a60ea2e7
1 changed files with 14 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/mmc/host/sdhci.c
View File

@ -2349,19 +2349,30 @@ out:
int sdhci_suspend_host(struct sdhci_host *host)
{
int ret;
bool has_tuning_timer;
sdhci_disable_card_detection(host);
/* Disable tuning since we are suspending */
if (host->version >= SDHCI_SPEC_300 && host->tuning_count &&
host->tuning_mode == SDHCI_TUNING_MODE_1) {
has_tuning_timer = host->version >= SDHCI_SPEC_300 &&
host->tuning_count && host->tuning_mode == SDHCI_TUNING_MODE_1;
if (has_tuning_timer) {
del_timer_sync(&host->tuning_timer);
host->flags &= ~SDHCI_NEEDS_RETUNING;
}
ret = mmc_suspend_host(host->mmc);
if (ret)
if (ret) {
if (has_tuning_timer) {
host->flags |= SDHCI_NEEDS_RETUNING;
mod_timer(&host->tuning_timer, jiffies +
host->tuning_count * HZ);
}
sdhci_enable_card_detection(host);
return ret;
}
free_irq(host->irq, host);