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SubjectRe: [PATCH V6 4/5] mmc: debugfs: Add debug fs error state entry for mmc driver
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Hi Adrian,

Thanks for the review.

Please find the inline comments.

Thanks,

Sajida

On 5/23/2022 12:45 PM, Adrian Hunter wrote:
> On 18/05/22 10:02, Shaik Sajida Bhanu wrote:
>> 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>
> Could use debugfs_create_file_unsafe() (see below)
>
> Otherwise:
>
> Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Sure Thank you
>
>> ---
>> drivers/mmc/core/debugfs.c | 23 +++++++++++++++++++++++
>> 1 file changed, 23 insertions(+)
>>
>> diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c
>> index 6aa5a60..3c7908d 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("err_state", 0600, root, host,
>> + &mmc_err_state);
> This could use debugfs_create_file_unsafe()
Sure
>
>> debugfs_create_file("err_stats", 0600, root, host,
>> &mmc_err_stats_fops);
>>

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