linux-kernel - [PATCH V2 2/2] EDAC: synopsys: re-enable the interrupts in intr

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Message-Id: <20220421015313.5747-3-sherry.sun@nxp.com>
Date:   Thu, 21 Apr 2022 09:53:13 +0800
From:   Sherry Sun <sherry.sun@....com>
To:     michal.simek@...inx.com, bp@...en8.de,
        Shubhrajyoti.datta@...inx.com, mchehab@...nel.org,
        tony.luck@...el.com, james.morse@....com, rric@...nel.org
Cc:     linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-imx@....com
Subject: [PATCH V2 2/2] EDAC: synopsys: re-enable the interrupts in intr_handler for V3.X Synopsys EDAC DDR

Since zynqmp_get_error_info() is called during CE/UE interrupt, at the
end of zynqmp_get_error_info(), it wirtes 0 to ECC_CLR_OFST, which cause
the CE/UE interrupts of V3.X Synopsys EDAC DDR been disabled, then the
interrupt handler will be called only once, so need to re-enable the
interrupts at the end of intr_handler for V3.X Synopsys EDAC DDR.

Signed-off-by: Sherry Sun <sherry.sun@....com>
Reviewed-by: Shubhrajyoti Datta <Shubhrajyoti.datta@...inx.com>
Acked-by: Michal Simek <michal.simek@...inx.com>
---
Changes in V2:
1. Add the Reviewed-by and Acked-by tag.
2. Add the newline as suggested by Michal.
---
 drivers/edac/synopsys_edac.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/edac/synopsys_edac.c b/drivers/edac/synopsys_edac.c
index 88a481043d4c..ae1cf02a92f5 100644
--- a/drivers/edac/synopsys_edac.c
+++ b/drivers/edac/synopsys_edac.c
@@ -527,6 +527,8 @@ static void handle_error(struct mem_ctl_info *mci, struct synps_ecc_status *p)
 	memset(p, 0, sizeof(*p));
 }
 
+static void enable_intr(struct synps_edac_priv *priv);
+
 /**
  * intr_handler - Interrupt Handler for ECC interrupts.
  * @irq:        IRQ number.
@@ -568,6 +570,9 @@ static irqreturn_t intr_handler(int irq, void *dev_id)
 	/* v3.0 of the controller does not have this register */
 	if (!(priv->p_data->quirks & DDR_ECC_INTR_SELF_CLEAR))
 		writel(regval, priv->baseaddr + DDR_QOS_IRQ_STAT_OFST);
+	else
+		enable_intr(priv);
+
 	return IRQ_HANDLED;
 }
 
-- 
2.17.1