diff options
Diffstat (limited to 'drivers/mmc/host')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 20 | ||||
| -rw-r--r-- | drivers/mmc/host/sdhci.h | 1 |
2 files changed, 21 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index b0a320004e0d..320c294b9d73 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -935,6 +935,9 @@ static bool sdhci_needs_reset(struct sdhci_host *host, struct mmc_request *mrq) static void sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq) { + if (sdhci_needs_reset(host, mrq)) + host->pending_reset = true; + tasklet_schedule(&host->finish_tasklet); } @@ -2232,6 +2235,8 @@ static void sdhci_tasklet_finish(unsigned long param) controllers do not like that. */ sdhci_do_reset(host, SDHCI_RESET_CMD); sdhci_do_reset(host, SDHCI_RESET_DATA); + + host->pending_reset = false; } host->mrq = NULL; @@ -2287,6 +2292,13 @@ static void sdhci_timeout_timer(unsigned long data) static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *mask) { if (!host->cmd) { + /* + * SDHCI recovers from errors by resetting the cmd and data + * circuits. Until that is done, there very well might be more + * interrupts, so ignore them in that case. + */ + if (host->pending_reset) + return; pr_err("%s: Got command interrupt 0x%08x even though no command operation was in progress.\n", mmc_hostname(host->mmc), (unsigned)intmask); sdhci_dumpregs(host); @@ -2409,6 +2421,14 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) } } + /* + * SDHCI recovers from errors by resetting the cmd and data + * circuits. Until that is done, there very well might be more + * interrupts, so ignore them in that case. + */ + if (host->pending_reset) + return; + pr_err("%s: Got data interrupt 0x%08x even though no data operation was in progress.\n", mmc_hostname(host->mmc), (unsigned)intmask); sdhci_dumpregs(host); diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 13e0bd6cff5d..7301c90f8500 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -463,6 +463,7 @@ struct sdhci_host { bool runtime_suspended; /* Host is runtime suspended */ bool bus_on; /* Bus power prevents runtime suspend */ bool preset_enabled; /* Preset is enabled */ + bool pending_reset; /* Cmd/data reset is pending */ struct mmc_request *mrq; /* Current request */ struct mmc_command *cmd; /* Current command */ |