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| author |   Shaik Sajida Bhanu <quic_c_sbhanu@quicinc.com> | 2022-05-27 23:23:55 +0530 |
|---|---|---|
| committer |   Ulf Hansson <ulf.hansson@linaro.org> | 2022-07-12 12:25:35 +0200 |
| commit | fadf344e6d69a94efa17619120132516f56b582c (patch) | |
| tree | 364fface00dda7f77faee9d5618fe22f8f9b6276 | |
| parent | mmc: debugfs: Add debug fs entry for mmc driver (diff) | |
| download | linux-dev-fadf344e6d69a94efa17619120132516f56b582c.tar.xz linux-dev-fadf344e6d69a94efa17619120132516f56b582c.zip | |
mmc: debugfs: Add debug fs error state entry for mmc driver
Add debug fs entry error state to query eMMC and SD card errors statistics.
If any errors occurred in eMMC and SD card driver level then
err_state value will be set to 1.
Signed-off-by: Liangliang Lu <quic_luliang@quicinc.com>
Signed-off-by: Sayali Lokhande <quic_sayalil@quicinc.com>
Signed-off-by: Bao D. Nguyen <quic_nguyenb@quicinc.com>
Signed-off-by: Shaik Sajida Bhanu <quic_c_sbhanu@quicinc.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/1653674036-21829-5-git-send-email-quic_c_sbhanu@quicinc.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
| -rw-r--r-- | drivers/mmc/core/debugfs.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c index 6aa5a60b6e81..75e98ec88fb9 100644 --- a/drivers/mmc/core/debugfs.c +++ b/drivers/mmc/core/debugfs.c @@ -223,6 +223,27 @@ static int mmc_clock_opt_set(void *data, u64 val) DEFINE_DEBUGFS_ATTRIBUTE(mmc_clock_fops, mmc_clock_opt_get, mmc_clock_opt_set, "%llu\n"); +static int mmc_err_state_get(void *data, u64 *val) +{ + struct mmc_host *host = data; + int i; + + if (!host) + return -EINVAL; + + *val = 0; + for (i = 0; i < MMC_ERR_MAX; i++) { + if (host->err_stats[i]) { + *val = 1; + break; + } + } + + return 0; +} + +DEFINE_DEBUGFS_ATTRIBUTE(mmc_err_state, mmc_err_state_get, NULL, "%llu\n"); + static int mmc_err_stats_show(struct seq_file *file, void *data) { struct mmc_host *host = (struct mmc_host *)file->private; @@ -289,6 +310,8 @@ void mmc_add_host_debugfs(struct mmc_host *host) debugfs_create_file_unsafe("clock", S_IRUSR | S_IWUSR, root, host, &mmc_clock_fops); + debugfs_create_file_unsafe("err_state", 0600, root, host, + &mmc_err_state); debugfs_create_file("err_stats", 0600, root, host, &mmc_err_stats_fops); |