[PATCH v9 7/9] scsi: ufs: Move dumps in IRQ handler to error handler

[Can Guo <cang@codeaurora.org>]

Sometime dumps in IRQ handler are heavy enough to cause system stability
issues, move them to error handler and only print basic host regs here.

Signed-off-by: Can Guo <cang@codeaurora.org>
Reviewed-by: Bean Huo <beanhuo@micron.com>
---
 drivers/scsi/ufs/ufshcd.c | 23 +++++++++++++++--------
 1 file changed, 15 insertions(+), 8 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 6a10003..a79fbbd 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -5696,6 +5696,19 @@ static void ufshcd_err_handler(struct work_struct *work)
 				    UFSHCD_UIC_DL_TCx_REPLAY_ERROR))))
 		needs_reset = true;
 
+	if (hba->saved_err & (INT_FATAL_ERRORS | UIC_ERROR |
+			      UFSHCD_UIC_HIBERN8_MASK)) {
+		bool pr_prdt = !!(hba->saved_err & SYSTEM_BUS_FATAL_ERROR);
+
+		spin_unlock_irqrestore(hba->host->host_lock, flags);
+		ufshcd_print_host_state(hba);
+		ufshcd_print_pwr_info(hba);
+		ufshcd_print_host_regs(hba);
+		ufshcd_print_tmrs(hba, hba->outstanding_tasks);
+		ufshcd_print_trs(hba, hba->outstanding_reqs, pr_prdt);
+		spin_lock_irqsave(hba->host->host_lock, flags);
+	}
+
 	/*
 	 * if host reset is required then skip clearing the pending
 	 * transfers forcefully because they will get cleared during
@@ -5915,18 +5928,12 @@ static irqreturn_t ufshcd_check_errors(struct ufs_hba *hba)
 
 		/* dump controller state before resetting */
 		if (hba->saved_err & (INT_FATAL_ERRORS | UIC_ERROR)) {
-			bool pr_prdt = !!(hba->saved_err &
-					SYSTEM_BUS_FATAL_ERROR);
-
 			dev_err(hba->dev, "%s: saved_err 0x%x saved_uic_err 0x%x\n",
 					__func__, hba->saved_err,
 					hba->saved_uic_err);
-
-			ufshcd_print_host_regs(hba);
+			ufshcd_dump_regs(hba, 0, UFSHCI_REG_SPACE_SIZE,
+					 "host_regs: ");
 			ufshcd_print_pwr_info(hba);
-			ufshcd_print_tmrs(hba, hba->outstanding_tasks);
-			ufshcd_print_trs(hba, hba->outstanding_reqs,
-					pr_prdt);
 		}
 		ufshcd_schedule_eh_work(hba);
 		retval |= IRQ_HANDLED;
-- 
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