diff mbox series

[V3,3/4] mmc: core: Capture eMMC and SD card errors

Message ID 1642699582-14785-4-git-send-email-quic_c_sbhanu@quicinc.com
State New
Headers show
Series mmc: add error statistics for eMMC and SD card | expand

Commit Message

Shaik Sajida Bhanu Jan. 20, 2022, 5:26 p.m. UTC 
Add changes to capture eMMC and SD card errors.
This is useful for debug and testing.

Signed-off-by: Shaik Sajida Bhanu <quic_c_sbhanu@quicinc.com>
Signed-off-by: Liangliang Lu <luliang@codeaurora.org>
Signed-off-by: Sayali Lokhande <sayalil@codeaurora.org>
Signed-off-by: Bao D. Nguyen <nguyenb@codeaurora.org>
Signed-off-by: Ram Prakash Gupta <quic_rampraka@quicinc.com>
---
 drivers/mmc/core/core.c  | 8 ++++++++
 drivers/mmc/core/queue.c | 3 +++
 2 files changed, 11 insertions(+)
diff mbox series

Patch

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 368f104..c586d69 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -2242,6 +2242,14 @@  void mmc_rescan(struct work_struct *work)
 		if (freqs[i] <= host->f_min)
 			break;
 	}
+
+	/*
+	 * Ignore the command timeout errors observed during
+	 * the card init as those are excepted.
+	 */
+
+	if (host && host->err_stats_enabled)
+		host->err_stats[MMC_ERR_CMD_TIMEOUT] = 0;
 	mmc_release_host(host);
 
  out:
diff --git a/drivers/mmc/core/queue.c b/drivers/mmc/core/queue.c
index c69b2d9..7dc9dfb 100644
--- a/drivers/mmc/core/queue.c
+++ b/drivers/mmc/core/queue.c
@@ -100,6 +100,9 @@  static enum blk_eh_timer_return mmc_cqe_timed_out(struct request *req)
 	enum mmc_issue_type issue_type = mmc_issue_type(mq, req);
 	bool recovery_needed = false;
 
+	if (host->err_stats_enabled)
+		mmc_debugfs_err_stats_inc(host, MMC_ERR_CMDQ_REQ_TIMEOUT);
+
 	switch (issue_type) {
 	case MMC_ISSUE_ASYNC:
 	case MMC_ISSUE_DCMD: