[PATCH 0/4] Fix interrupt log message

[PATCH 0/4] Fix interrupt log message

[Hans Zhang]

1. PCI: rockchip-host: Fix "Unexpected Completion" log message
2. PCI: rockchip-host: Correct non-fatal error log message
3. PCI: rockchip-host: Refactor IRQ handling with info arrays
4. PCI: rockchip-host: Remove unused header includes

---
Dear Maintainers,

Detailed descriptions of interrupts can be seen from RK3399 TRM doc.
I found two errors, optimized the code and cleaned up the driver by the way.
---

Hans Zhang (4):
  PCI: rockchip-host: Fix "Unexpected Completion" log message
  PCI: rockchip-host: Correct non-fatal error log message
  PCI: rockchip-host: Refactor IRQ handling with info arrays
  PCI: rockchip-host: Remove unused header includes

 drivers/pci/controller/pcie-rockchip-host.c | 119 ++++++++------------
 1 file changed, 48 insertions(+), 71 deletions(-)


base-commit: 01f95500a162fca88cefab9ed64ceded5afabc12
-- 
2.25.1

[PATCH 1/4] PCI: rockchip-host: Fix "Unexpected Completion" log message

[Hans Zhang]

Fix the debug message for the PCIE_CORE_INT_UCR interrupt to clearly
indicate "Unexpected Completion" instead of a duplicate "malformed TLP"
message. This improves error log accuracy.

Signed-off-by: Hans Zhang <18255117159@163.com>
---
 drivers/pci/controller/pcie-rockchip-host.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/controller/pcie-rockchip-host.c b/drivers/pci/controller/pcie-rockchip-host.c
index 6a46be17aa91..2804980bab86 100644
--- a/drivers/pci/controller/pcie-rockchip-host.c
+++ b/drivers/pci/controller/pcie-rockchip-host.c
@@ -439,7 +439,7 @@ static irqreturn_t rockchip_pcie_subsys_irq_handler(int irq, void *arg)
 			dev_dbg(dev, "malformed TLP received from the link\n");
 
 		if (sub_reg & PCIE_CORE_INT_UCR)
-			dev_dbg(dev, "malformed TLP received from the link\n");
+			dev_dbg(dev, "Unexpected Completion received from the link\n");
 
 		if (sub_reg & PCIE_CORE_INT_FCE)
 			dev_dbg(dev, "an error was observed in the flow control advertisements from the other side\n");
-- 
2.25.1

[PATCH 2/4] PCI: rockchip-host: Correct non-fatal error log message

[Hans Zhang]

Correct the debug message for PCIE_CLIENT_INT_NFATAL_ERR from
"no fatal error" to "non fatal error interrupt received" to match the
actual interrupt semantics. This avoids confusion in log interpretation.

Signed-off-by: Hans Zhang <18255117159@163.com>
---
 drivers/pci/controller/pcie-rockchip-host.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/controller/pcie-rockchip-host.c b/drivers/pci/controller/pcie-rockchip-host.c
index 2804980bab86..209eb94ece1b 100644
--- a/drivers/pci/controller/pcie-rockchip-host.c
+++ b/drivers/pci/controller/pcie-rockchip-host.c
@@ -489,7 +489,7 @@ static irqreturn_t rockchip_pcie_client_irq_handler(int irq, void *arg)
 		dev_dbg(dev, "fatal error interrupt received\n");
 
 	if (reg & PCIE_CLIENT_INT_NFATAL_ERR)
-		dev_dbg(dev, "no fatal error interrupt received\n");
+		dev_dbg(dev, "non fatal error interrupt received\n");
 
 	if (reg & PCIE_CLIENT_INT_CORR_ERR)
 		dev_dbg(dev, "correctable error interrupt received\n");
-- 
2.25.1

[PATCH 3/4] PCI: rockchip-host: Refactor IRQ handling with info arrays

[Hans Zhang]

Replace repetitive if-conditions for IRQ status checks with structured
arrays (`pcie_subsys_irq_info` and `pcie_client_irq_info`) and loop-based
logging. This simplifies maintenance and reduces code duplication.

Signed-off-by: Hans Zhang <18255117159@163.com>
---
 drivers/pci/controller/pcie-rockchip-host.c | 110 +++++++++-----------
 1 file changed, 48 insertions(+), 62 deletions(-)

diff --git a/drivers/pci/controller/pcie-rockchip-host.c b/drivers/pci/controller/pcie-rockchip-host.c
index 209eb94ece1b..ba1f7832bda5 100644
--- a/drivers/pci/controller/pcie-rockchip-host.c
+++ b/drivers/pci/controller/pcie-rockchip-host.c
@@ -36,6 +36,45 @@
 #include "../pci.h"
 #include "pcie-rockchip.h"
 
+struct rockchip_irq_info {
+	u32 bit;
+	const char *msg;
+};
+
+static const struct rockchip_irq_info pcie_subsys_irq_info[] = {
+	{ PCIE_CORE_INT_PRFPE,
+	  "parity error detected while reading from the PNP receive FIFO RAM" },
+	{ PCIE_CORE_INT_CRFPE,
+	  "parity error detected while reading from the Completion Receive FIFO RAM" },
+	{ PCIE_CORE_INT_RRPE,
+	  "parity error detected while reading from replay buffer RAM" },
+	{ PCIE_CORE_INT_PRFO, "overflow occurred in the PNP receive FIFO" },
+	{ PCIE_CORE_INT_CRFO,
+	  "overflow occurred in the completion receive FIFO" },
+	{ PCIE_CORE_INT_RT, "replay timer timed out" },
+	{ PCIE_CORE_INT_RTR,
+	  "replay timer rolled over after 4 transmissions of the same TLP" },
+	{ PCIE_CORE_INT_PE, "phy error detected on receive side" },
+	{ PCIE_CORE_INT_MTR, "malformed TLP received from the link" },
+	{ PCIE_CORE_INT_UCR, "Unexpected Completion received from the link" },
+	{ PCIE_CORE_INT_FCE,
+	  "an error was observed in the flow control advertisements from the other side" },
+	{ PCIE_CORE_INT_CT, "a request timed out waiting for completion" },
+	{ PCIE_CORE_INT_UTC, "unmapped TC error" },
+	{ PCIE_CORE_INT_MMVC, "MSI mask register changes" },
+};
+
+static const struct rockchip_irq_info pcie_client_irq_info[] = {
+	{ PCIE_CLIENT_INT_LEGACY_DONE, "legacy done" },
+	{ PCIE_CLIENT_INT_MSG, "message done" },
+	{ PCIE_CLIENT_INT_HOT_RST, "hot reset" },
+	{ PCIE_CLIENT_INT_DPA, "dpa" },
+	{ PCIE_CLIENT_INT_FATAL_ERR, "fatal error" },
+	{ PCIE_CLIENT_INT_NFATAL_ERR, "Non fatal error" },
+	{ PCIE_CLIENT_INT_CORR_ERR, "correctable error" },
+	{ PCIE_CLIENT_INT_PHY, "phy" },
+};
+
 static void rockchip_pcie_enable_bw_int(struct rockchip_pcie *rockchip)
 {
 	u32 status;
@@ -411,47 +450,11 @@ static irqreturn_t rockchip_pcie_subsys_irq_handler(int irq, void *arg)
 	if (reg & PCIE_CLIENT_INT_LOCAL) {
 		dev_dbg(dev, "local interrupt received\n");
 		sub_reg = rockchip_pcie_read(rockchip, PCIE_CORE_INT_STATUS);
-		if (sub_reg & PCIE_CORE_INT_PRFPE)
-			dev_dbg(dev, "parity error detected while reading from the PNP receive FIFO RAM\n");
-
-		if (sub_reg & PCIE_CORE_INT_CRFPE)
-			dev_dbg(dev, "parity error detected while reading from the Completion Receive FIFO RAM\n");
-
-		if (sub_reg & PCIE_CORE_INT_RRPE)
-			dev_dbg(dev, "parity error detected while reading from replay buffer RAM\n");
-
-		if (sub_reg & PCIE_CORE_INT_PRFO)
-			dev_dbg(dev, "overflow occurred in the PNP receive FIFO\n");
-
-		if (sub_reg & PCIE_CORE_INT_CRFO)
-			dev_dbg(dev, "overflow occurred in the completion receive FIFO\n");
-
-		if (sub_reg & PCIE_CORE_INT_RT)
-			dev_dbg(dev, "replay timer timed out\n");
-
-		if (sub_reg & PCIE_CORE_INT_RTR)
-			dev_dbg(dev, "replay timer rolled over after 4 transmissions of the same TLP\n");
-
-		if (sub_reg & PCIE_CORE_INT_PE)
-			dev_dbg(dev, "phy error detected on receive side\n");
 
-		if (sub_reg & PCIE_CORE_INT_MTR)
-			dev_dbg(dev, "malformed TLP received from the link\n");
-
-		if (sub_reg & PCIE_CORE_INT_UCR)
-			dev_dbg(dev, "Unexpected Completion received from the link\n");
-
-		if (sub_reg & PCIE_CORE_INT_FCE)
-			dev_dbg(dev, "an error was observed in the flow control advertisements from the other side\n");
-
-		if (sub_reg & PCIE_CORE_INT_CT)
-			dev_dbg(dev, "a request timed out waiting for completion\n");
-
-		if (sub_reg & PCIE_CORE_INT_UTC)
-			dev_dbg(dev, "unmapped TC error\n");
-
-		if (sub_reg & PCIE_CORE_INT_MMVC)
-			dev_dbg(dev, "MSI mask register changes\n");
+		for (int i = 0; i < ARRAY_SIZE(pcie_subsys_irq_info); i++) {
+			if (sub_reg & pcie_subsys_irq_info[i].bit)
+				dev_dbg(dev, "%s\n", pcie_subsys_irq_info[i].msg);
+		}
 
 		rockchip_pcie_write(rockchip, sub_reg, PCIE_CORE_INT_STATUS);
 	} else if (reg & PCIE_CLIENT_INT_PHY) {
@@ -473,29 +476,12 @@ static irqreturn_t rockchip_pcie_client_irq_handler(int irq, void *arg)
 	u32 reg;
 
 	reg = rockchip_pcie_read(rockchip, PCIE_CLIENT_INT_STATUS);
-	if (reg & PCIE_CLIENT_INT_LEGACY_DONE)
-		dev_dbg(dev, "legacy done interrupt received\n");
-
-	if (reg & PCIE_CLIENT_INT_MSG)
-		dev_dbg(dev, "message done interrupt received\n");
 
-	if (reg & PCIE_CLIENT_INT_HOT_RST)
-		dev_dbg(dev, "hot reset interrupt received\n");
-
-	if (reg & PCIE_CLIENT_INT_DPA)
-		dev_dbg(dev, "dpa interrupt received\n");
-
-	if (reg & PCIE_CLIENT_INT_FATAL_ERR)
-		dev_dbg(dev, "fatal error interrupt received\n");
-
-	if (reg & PCIE_CLIENT_INT_NFATAL_ERR)
-		dev_dbg(dev, "non fatal error interrupt received\n");
-
-	if (reg & PCIE_CLIENT_INT_CORR_ERR)
-		dev_dbg(dev, "correctable error interrupt received\n");
-
-	if (reg & PCIE_CLIENT_INT_PHY)
-		dev_dbg(dev, "phy interrupt received\n");
+	for (int i = 0; i < ARRAY_SIZE(pcie_client_irq_info); i++) {
+		if (reg & pcie_client_irq_info[i].bit)
+			dev_dbg(dev, "%s interrupt received\n",
+				pcie_client_irq_info[i].msg);
+	}
 
 	rockchip_pcie_write(rockchip, reg & (PCIE_CLIENT_INT_LEGACY_DONE |
 			      PCIE_CLIENT_INT_MSG | PCIE_CLIENT_INT_HOT_RST |
-- 
2.25.1

[PATCH 4/4] PCI: rockchip-host: Remove unused header includes

[Hans Zhang]

Clean up the driver by removing unnecessary header includes
(e.g., <linux/clk.h>, <linux/reset.h>) that are no longer referenced
after refactoring. This improves code readability and build efficiency.

Signed-off-by: Hans Zhang <18255117159@163.com>
---
 drivers/pci/controller/pcie-rockchip-host.c | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/drivers/pci/controller/pcie-rockchip-host.c b/drivers/pci/controller/pcie-rockchip-host.c
index ba1f7832bda5..e2c603634bda 100644
--- a/drivers/pci/controller/pcie-rockchip-host.c
+++ b/drivers/pci/controller/pcie-rockchip-host.c
@@ -12,26 +12,17 @@
  */
 
 #include <linux/bitrev.h>
-#include <linux/clk.h>
-#include <linux/delay.h>
 #include <linux/gpio/consumer.h>
-#include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/iopoll.h>
 #include <linux/irq.h>
 #include <linux/irqchip/chained_irq.h>
 #include <linux/irqdomain.h>
-#include <linux/kernel.h>
-#include <linux/mfd/syscon.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_pci.h>
-#include <linux/pci.h>
-#include <linux/pci_ids.h>
 #include <linux/phy/phy.h>
 #include <linux/platform_device.h>
-#include <linux/reset.h>
-#include <linux/regmap.h>
 
 #include "../pci.h"
 #include "pcie-rockchip.h"
-- 
2.25.1

Re: [PATCH 3/4] PCI: rockchip-host: Refactor IRQ handling with info arrays

[Krzysztof Wilczyński]

Hello,

Thank you for the patch and the proposed changes.

> Replace repetitive if-conditions for IRQ status checks with structured
> arrays (`pcie_subsys_irq_info` and `pcie_client_irq_info`) and loop-based
> logging. This simplifies maintenance and reduces code duplication.
[...]
> +static const struct rockchip_irq_info pcie_subsys_irq_info[] = {
> +	{ PCIE_CORE_INT_PRFPE,
> +	  "parity error detected while reading from the PNP receive FIFO RAM" },
> +	{ PCIE_CORE_INT_CRFPE,
> +	  "parity error detected while reading from the Completion Receive FIFO RAM" },
> +	{ PCIE_CORE_INT_RRPE,
> +	  "parity error detected while reading from replay buffer RAM" },
> +	{ PCIE_CORE_INT_PRFO, "overflow occurred in the PNP receive FIFO" },
> +	{ PCIE_CORE_INT_CRFO,
> +	  "overflow occurred in the completion receive FIFO" },
> +	{ PCIE_CORE_INT_RT, "replay timer timed out" },
> +	{ PCIE_CORE_INT_RTR,
> +	  "replay timer rolled over after 4 transmissions of the same TLP" },
> +	{ PCIE_CORE_INT_PE, "phy error detected on receive side" },
> +	{ PCIE_CORE_INT_MTR, "malformed TLP received from the link" },
> +	{ PCIE_CORE_INT_UCR, "Unexpected Completion received from the link" },
> +	{ PCIE_CORE_INT_FCE,
> +	  "an error was observed in the flow control advertisements from the other side" },
> +	{ PCIE_CORE_INT_CT, "a request timed out waiting for completion" },
> +	{ PCIE_CORE_INT_UTC, "unmapped TC error" },
> +	{ PCIE_CORE_INT_MMVC, "MSI mask register changes" },
> +};
> +
> +static const struct rockchip_irq_info pcie_client_irq_info[] = {
> +	{ PCIE_CLIENT_INT_LEGACY_DONE, "legacy done" },
> +	{ PCIE_CLIENT_INT_MSG, "message done" },
> +	{ PCIE_CLIENT_INT_HOT_RST, "hot reset" },
> +	{ PCIE_CLIENT_INT_DPA, "dpa" },
> +	{ PCIE_CLIENT_INT_FATAL_ERR, "fatal error" },
> +	{ PCIE_CLIENT_INT_NFATAL_ERR, "Non fatal error" },
> +	{ PCIE_CLIENT_INT_CORR_ERR, "correctable error" },
> +	{ PCIE_CLIENT_INT_PHY, "phy" },
> +};
> +
>  static void rockchip_pcie_enable_bw_int(struct rockchip_pcie *rockchip)
>  {
>  	u32 status;
> @@ -411,47 +450,11 @@ static irqreturn_t rockchip_pcie_subsys_irq_handler(int irq, void *arg)
>  	if (reg & PCIE_CLIENT_INT_LOCAL) {
>  		dev_dbg(dev, "local interrupt received\n");
>  		sub_reg = rockchip_pcie_read(rockchip, PCIE_CORE_INT_STATUS);
> -		if (sub_reg & PCIE_CORE_INT_PRFPE)
> -			dev_dbg(dev, "parity error detected while reading from the PNP receive FIFO RAM\n");
> -
> -		if (sub_reg & PCIE_CORE_INT_CRFPE)
> -			dev_dbg(dev, "parity error detected while reading from the Completion Receive FIFO RAM\n");
> -
> -		if (sub_reg & PCIE_CORE_INT_RRPE)
> -			dev_dbg(dev, "parity error detected while reading from replay buffer RAM\n");
> -
> -		if (sub_reg & PCIE_CORE_INT_PRFO)
> -			dev_dbg(dev, "overflow occurred in the PNP receive FIFO\n");
> -
> -		if (sub_reg & PCIE_CORE_INT_CRFO)
> -			dev_dbg(dev, "overflow occurred in the completion receive FIFO\n");
> -
> -		if (sub_reg & PCIE_CORE_INT_RT)
> -			dev_dbg(dev, "replay timer timed out\n");
> -
> -		if (sub_reg & PCIE_CORE_INT_RTR)
> -			dev_dbg(dev, "replay timer rolled over after 4 transmissions of the same TLP\n");
> -
> -		if (sub_reg & PCIE_CORE_INT_PE)
> -			dev_dbg(dev, "phy error detected on receive side\n");
>  
> -		if (sub_reg & PCIE_CORE_INT_MTR)
> -			dev_dbg(dev, "malformed TLP received from the link\n");
> -
> -		if (sub_reg & PCIE_CORE_INT_UCR)
> -			dev_dbg(dev, "Unexpected Completion received from the link\n");
> -
> -		if (sub_reg & PCIE_CORE_INT_FCE)
> -			dev_dbg(dev, "an error was observed in the flow control advertisements from the other side\n");
> -
> -		if (sub_reg & PCIE_CORE_INT_CT)
> -			dev_dbg(dev, "a request timed out waiting for completion\n");
> -
> -		if (sub_reg & PCIE_CORE_INT_UTC)
> -			dev_dbg(dev, "unmapped TC error\n");
> -
> -		if (sub_reg & PCIE_CORE_INT_MMVC)
> -			dev_dbg(dev, "MSI mask register changes\n");
> +		for (int i = 0; i < ARRAY_SIZE(pcie_subsys_irq_info); i++) {
> +			if (sub_reg & pcie_subsys_irq_info[i].bit)
> +				dev_dbg(dev, "%s\n", pcie_subsys_irq_info[i].msg);
> +		}
>  
>  		rockchip_pcie_write(rockchip, sub_reg, PCIE_CORE_INT_STATUS);
>  	} else if (reg & PCIE_CLIENT_INT_PHY) {
> @@ -473,29 +476,12 @@ static irqreturn_t rockchip_pcie_client_irq_handler(int irq, void *arg)
>  	u32 reg;
>  
>  	reg = rockchip_pcie_read(rockchip, PCIE_CLIENT_INT_STATUS);
> -	if (reg & PCIE_CLIENT_INT_LEGACY_DONE)
> -		dev_dbg(dev, "legacy done interrupt received\n");
> -
> -	if (reg & PCIE_CLIENT_INT_MSG)
> -		dev_dbg(dev, "message done interrupt received\n");
>  
> -	if (reg & PCIE_CLIENT_INT_HOT_RST)
> -		dev_dbg(dev, "hot reset interrupt received\n");
> -
> -	if (reg & PCIE_CLIENT_INT_DPA)
> -		dev_dbg(dev, "dpa interrupt received\n");
> -
> -	if (reg & PCIE_CLIENT_INT_FATAL_ERR)
> -		dev_dbg(dev, "fatal error interrupt received\n");
> -
> -	if (reg & PCIE_CLIENT_INT_NFATAL_ERR)
> -		dev_dbg(dev, "non fatal error interrupt received\n");
> -
> -	if (reg & PCIE_CLIENT_INT_CORR_ERR)
> -		dev_dbg(dev, "correctable error interrupt received\n");
> -
> -	if (reg & PCIE_CLIENT_INT_PHY)
> -		dev_dbg(dev, "phy interrupt received\n");
> +	for (int i = 0; i < ARRAY_SIZE(pcie_client_irq_info); i++) {
> +		if (reg & pcie_client_irq_info[i].bit)
> +			dev_dbg(dev, "%s interrupt received\n",
> +				pcie_client_irq_info[i].msg);

Why do you think that this is better?

Other patches in this series seem sensible, but this one does not stands
out as something that needs to be changed.

Thank you!

	Krzysztof

Re: [PATCH 3/4] PCI: rockchip-host: Refactor IRQ handling with info arrays

[Hans Zhang]

On 2025/5/13 18:40, Krzysztof Wilczyński wrote:
> Hello,
> 
> Thank you for the patch and the proposed changes.
> 
>> Replace repetitive if-conditions for IRQ status checks with structured
>> arrays (`pcie_subsys_irq_info` and `pcie_client_irq_info`) and loop-based
>> logging. This simplifies maintenance and reduces code duplication.
> [...]
>> +static const struct rockchip_irq_info pcie_subsys_irq_info[] = {
>> +	{ PCIE_CORE_INT_PRFPE,
>> +	  "parity error detected while reading from the PNP receive FIFO RAM" },
>> +	{ PCIE_CORE_INT_CRFPE,
>> +	  "parity error detected while reading from the Completion Receive FIFO RAM" },
>> +	{ PCIE_CORE_INT_RRPE,
>> +	  "parity error detected while reading from replay buffer RAM" },
>> +	{ PCIE_CORE_INT_PRFO, "overflow occurred in the PNP receive FIFO" },
>> +	{ PCIE_CORE_INT_CRFO,
>> +	  "overflow occurred in the completion receive FIFO" },
>> +	{ PCIE_CORE_INT_RT, "replay timer timed out" },
>> +	{ PCIE_CORE_INT_RTR,
>> +	  "replay timer rolled over after 4 transmissions of the same TLP" },
>> +	{ PCIE_CORE_INT_PE, "phy error detected on receive side" },
>> +	{ PCIE_CORE_INT_MTR, "malformed TLP received from the link" },
>> +	{ PCIE_CORE_INT_UCR, "Unexpected Completion received from the link" },
>> +	{ PCIE_CORE_INT_FCE,
>> +	  "an error was observed in the flow control advertisements from the other side" },
>> +	{ PCIE_CORE_INT_CT, "a request timed out waiting for completion" },
>> +	{ PCIE_CORE_INT_UTC, "unmapped TC error" },
>> +	{ PCIE_CORE_INT_MMVC, "MSI mask register changes" },
>> +};
>> +
>> +static const struct rockchip_irq_info pcie_client_irq_info[] = {
>> +	{ PCIE_CLIENT_INT_LEGACY_DONE, "legacy done" },
>> +	{ PCIE_CLIENT_INT_MSG, "message done" },
>> +	{ PCIE_CLIENT_INT_HOT_RST, "hot reset" },
>> +	{ PCIE_CLIENT_INT_DPA, "dpa" },
>> +	{ PCIE_CLIENT_INT_FATAL_ERR, "fatal error" },
>> +	{ PCIE_CLIENT_INT_NFATAL_ERR, "Non fatal error" },
>> +	{ PCIE_CLIENT_INT_CORR_ERR, "correctable error" },
>> +	{ PCIE_CLIENT_INT_PHY, "phy" },
>> +};
>> +
>>   static void rockchip_pcie_enable_bw_int(struct rockchip_pcie *rockchip)
>>   {
>>   	u32 status;
>> @@ -411,47 +450,11 @@ static irqreturn_t rockchip_pcie_subsys_irq_handler(int irq, void *arg)
>>   	if (reg & PCIE_CLIENT_INT_LOCAL) {
>>   		dev_dbg(dev, "local interrupt received\n");
>>   		sub_reg = rockchip_pcie_read(rockchip, PCIE_CORE_INT_STATUS);
>> -		if (sub_reg & PCIE_CORE_INT_PRFPE)
>> -			dev_dbg(dev, "parity error detected while reading from the PNP receive FIFO RAM\n");
>> -
>> -		if (sub_reg & PCIE_CORE_INT_CRFPE)
>> -			dev_dbg(dev, "parity error detected while reading from the Completion Receive FIFO RAM\n");
>> -
>> -		if (sub_reg & PCIE_CORE_INT_RRPE)
>> -			dev_dbg(dev, "parity error detected while reading from replay buffer RAM\n");
>> -
>> -		if (sub_reg & PCIE_CORE_INT_PRFO)
>> -			dev_dbg(dev, "overflow occurred in the PNP receive FIFO\n");
>> -
>> -		if (sub_reg & PCIE_CORE_INT_CRFO)
>> -			dev_dbg(dev, "overflow occurred in the completion receive FIFO\n");
>> -
>> -		if (sub_reg & PCIE_CORE_INT_RT)
>> -			dev_dbg(dev, "replay timer timed out\n");
>> -
>> -		if (sub_reg & PCIE_CORE_INT_RTR)
>> -			dev_dbg(dev, "replay timer rolled over after 4 transmissions of the same TLP\n");
>> -
>> -		if (sub_reg & PCIE_CORE_INT_PE)
>> -			dev_dbg(dev, "phy error detected on receive side\n");
>>   
>> -		if (sub_reg & PCIE_CORE_INT_MTR)
>> -			dev_dbg(dev, "malformed TLP received from the link\n");
>> -
>> -		if (sub_reg & PCIE_CORE_INT_UCR)
>> -			dev_dbg(dev, "Unexpected Completion received from the link\n");
>> -
>> -		if (sub_reg & PCIE_CORE_INT_FCE)
>> -			dev_dbg(dev, "an error was observed in the flow control advertisements from the other side\n");
>> -
>> -		if (sub_reg & PCIE_CORE_INT_CT)
>> -			dev_dbg(dev, "a request timed out waiting for completion\n");
>> -
>> -		if (sub_reg & PCIE_CORE_INT_UTC)
>> -			dev_dbg(dev, "unmapped TC error\n");
>> -
>> -		if (sub_reg & PCIE_CORE_INT_MMVC)
>> -			dev_dbg(dev, "MSI mask register changes\n");
>> +		for (int i = 0; i < ARRAY_SIZE(pcie_subsys_irq_info); i++) {
>> +			if (sub_reg & pcie_subsys_irq_info[i].bit)
>> +				dev_dbg(dev, "%s\n", pcie_subsys_irq_info[i].msg);
>> +		}
>>   
>>   		rockchip_pcie_write(rockchip, sub_reg, PCIE_CORE_INT_STATUS);
>>   	} else if (reg & PCIE_CLIENT_INT_PHY) {
>> @@ -473,29 +476,12 @@ static irqreturn_t rockchip_pcie_client_irq_handler(int irq, void *arg)
>>   	u32 reg;
>>   
>>   	reg = rockchip_pcie_read(rockchip, PCIE_CLIENT_INT_STATUS);
>> -	if (reg & PCIE_CLIENT_INT_LEGACY_DONE)
>> -		dev_dbg(dev, "legacy done interrupt received\n");
>> -
>> -	if (reg & PCIE_CLIENT_INT_MSG)
>> -		dev_dbg(dev, "message done interrupt received\n");
>>   
>> -	if (reg & PCIE_CLIENT_INT_HOT_RST)
>> -		dev_dbg(dev, "hot reset interrupt received\n");
>> -
>> -	if (reg & PCIE_CLIENT_INT_DPA)
>> -		dev_dbg(dev, "dpa interrupt received\n");
>> -
>> -	if (reg & PCIE_CLIENT_INT_FATAL_ERR)
>> -		dev_dbg(dev, "fatal error interrupt received\n");
>> -
>> -	if (reg & PCIE_CLIENT_INT_NFATAL_ERR)
>> -		dev_dbg(dev, "non fatal error interrupt received\n");
>> -
>> -	if (reg & PCIE_CLIENT_INT_CORR_ERR)
>> -		dev_dbg(dev, "correctable error interrupt received\n");
>> -
>> -	if (reg & PCIE_CLIENT_INT_PHY)
>> -		dev_dbg(dev, "phy interrupt received\n");
>> +	for (int i = 0; i < ARRAY_SIZE(pcie_client_irq_info); i++) {
>> +		if (reg & pcie_client_irq_info[i].bit)
>> +			dev_dbg(dev, "%s interrupt received\n",
>> +				pcie_client_irq_info[i].msg);
> 
> Why do you think that this is better?
> 
> Other patches in this series seem sensible, but this one does not stands
> out as something that needs to be changed.
> 

Dear Krzysztof

Thank you very much for your reply.

In the interrupt handling function: rockchip_pcie_subsys_irq_handler, 
personally, I think the amount of code can be simplified and it looks 
more concise.

There are many repetitive "interrupt received" print messages in the 
interrupt handling function: rockchip_pcie_client_irq_handler. My 
original intention was to simplify it.

If you think it's not necessary, I will drop this patch.

Best regards,
Hans