Don't limit MRRS during resume, so that saved value can be restored,
otherwise the MRRS will become the minimum value after resume.
Cc: <stable@xxxxxxxxxxxxxxx>
Fixes: 8b3517f88ff2983f ("PCI: loongson: Prevent LS7A MRRS increases")
Signed-off-by: Jianmin Lv <lvjianmin@xxxxxxxxxxx>
Signed-off-by: Huacai Chen <chenhuacai@xxxxxxxxxxx>
---
drivers/pci/pci.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 35fb1f17a589..bfc806d9e9bd 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -31,6 +31,7 @@
#include <asm/dma.h>
#include <linux/aer.h>
#include <linux/bitfield.h>
+#include <linux/suspend.h>
#include "pci.h"
DEFINE_MUTEX(pci_slot_mutex);
@@ -5945,7 +5946,7 @@ int pcie_set_readrq(struct pci_dev *dev, int rq)
v = FIELD_PREP(PCI_EXP_DEVCTL_READRQ, ffs(rq) - 8);
- if (bridge->no_inc_mrrs) {
+ if (bridge->no_inc_mrrs && (pm_suspend_target_state == PM_SUSPEND_ON)) {
int max_mrrs = pcie_get_readrq(dev);
if (rq > max_mrrs) {
--
2.43.0
