diff options
| -rw-r--r-- | drivers/mmc/core/debugfs.c | 31 | ||||
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 2 | ||||
| -rw-r--r-- | include/linux/mmc/host.h | 2 |
3 files changed, 35 insertions, 0 deletions
diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c index a0d31ded04db..594fba08e623 100644 --- a/drivers/mmc/core/debugfs.c +++ b/drivers/mmc/core/debugfs.c @@ -348,6 +348,33 @@ static int mmc_force_err_set(void *data, u64 val) DEFINE_SIMPLE_ATTRIBUTE(mmc_force_err_fops, NULL, mmc_force_err_set, "%llu\n"); +static int mmc_err_state_get(void *data, u64 *val) +{ + struct mmc_host *host = data; + + if (!host) + return -EINVAL; + + *val = host->err_occurred ? 1 : 0; + + return 0; +} + +static int mmc_err_state_clear(void *data, u64 val) +{ + struct mmc_host *host = data; + + if (!host) + return -EINVAL; + + host->err_occurred = false; + + return 0; +} + +DEFINE_SIMPLE_ATTRIBUTE(mmc_err_state, mmc_err_state_get, + mmc_err_state_clear, "%llu\n"); + void mmc_add_host_debugfs(struct mmc_host *host) { struct dentry *root; @@ -393,6 +420,10 @@ void mmc_add_host_debugfs(struct mmc_host *host) root, host, &mmc_ring_buffer_fops)) goto err_node; #endif + if (!debugfs_create_file("err_state", S_IRUSR | S_IWUSR, root, host, + &mmc_err_state)) + goto err_node; + #ifdef CONFIG_MMC_CLKGATE if (!debugfs_create_u32("clk_delay", (S_IRUSR | S_IWUSR), root, &host->clk_delay)) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 21d2a4b8f7ae..1fdc23365c8f 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -179,6 +179,8 @@ static void sdhci_dumpregs(struct sdhci_host *host) readl(host->ioaddr + SDHCI_ADMA_ADDRESS)); } + host->mmc->err_occurred = true; + if (host->ops->dump_vendor_regs) host->ops->dump_vendor_regs(host); sdhci_dump_state(host); diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 5374bd6c4cbe..055b879dfa6b 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -534,6 +534,8 @@ struct mmc_host { struct dentry *debugfs_root; + bool err_occurred; + struct mmc_async_req *areq; /* active async req */ struct mmc_context_info context_info; /* async synchronization info */ |