diff mbox series

[2/4] mpt3sas: Fix look configured PCIe link speed not cap

Message ID 1561387376-28323-3-git-send-email-sreekanth.reddy@broadcom.com (mailing list archive)
State Mainlined
Commit 48d6f0a6a5595abb38d899dbf8ca09f7dc858d2b
Headers show
Series mpt3sas: bug fix patches | expand

Commit Message

Sreekanth Reddy June 24, 2019, 2:42 p.m. UTC 
While enabling high iops queues driver should look for HBA's
configured PCIe link speed instead of looking for HBA's max
capacity link speed.

i.e. Enable high iops queues only if Aero/Sea HBA's configured
PCIe link speed is set to 16GT/s speed.

Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
---
 drivers/scsi/mpt3sas/mpt3sas_base.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)
diff mbox series

Patch

diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index d55f134..8a47e02 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -2979,7 +2979,7 @@  static void
 _base_check_and_enable_high_iops_queues(struct MPT3SAS_ADAPTER *ioc,
 		int hba_msix_vector_count)
 {
-	enum pci_bus_speed speed = PCI_SPEED_UNKNOWN;
+	u16 lnksta, speed;
 
 	if (perf_mode == MPT_PERF_MODE_IOPS ||
 	    perf_mode == MPT_PERF_MODE_LATENCY) {
@@ -2989,15 +2989,10 @@  _base_check_and_enable_high_iops_queues(struct MPT3SAS_ADAPTER *ioc,
 
 	if (perf_mode == MPT_PERF_MODE_DEFAULT) {
 
-		speed = pcie_get_speed_cap(ioc->pdev);
-		dev_info(&ioc->pdev->dev, "PCIe device speed is %s\n",
-		     speed == PCIE_SPEED_2_5GT ? "2.5GHz" :
-		     speed == PCIE_SPEED_5_0GT ? "5.0GHz" :
-		     speed == PCIE_SPEED_8_0GT ? "8.0GHz" :
-		     speed == PCIE_SPEED_16_0GT ? "16.0GHz" :
-		     "Unknown");
+		pcie_capability_read_word(ioc->pdev, PCI_EXP_LNKSTA, &lnksta);
+		speed = lnksta & PCI_EXP_LNKSTA_CLS;
 
-		if (speed < PCIE_SPEED_16_0GT) {
+		if (speed < 0x4) {
 			ioc->high_iops_queues = 0;
 			return;
 		}