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path: root/drivers/misc/cxl/pci.c
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Diffstat (limited to 'drivers/misc/cxl/pci.c')
-rw-r--r--drivers/misc/cxl/pci.c21
1 files changed, 12 insertions, 9 deletions
diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c
index 94fd3f71f838..c6d5cf5e3793 100644
--- a/drivers/misc/cxl/pci.c
+++ b/drivers/misc/cxl/pci.c
@@ -394,22 +394,24 @@ static int init_implementation_adapter_regs(struct cxl *adapter, struct pci_dev
#define TBSYNC_CNT(n) (((u64)n & 0x7) << (63-6))
#define _2048_250MHZ_CYCLES 1
-static int cxl_setup_psl_timebase(struct cxl *adapter, struct pci_dev *dev)
+static void cxl_setup_psl_timebase(struct cxl *adapter, struct pci_dev *dev)
{
u64 psl_tb;
int delta;
unsigned int retry = 0;
struct device_node *np;
+ adapter->psl_timebase_synced = false;
+
if (!(np = pnv_pci_get_phb_node(dev)))
- return -ENODEV;
+ return;
/* Do not fail when CAPP timebase sync is not supported by OPAL */
of_node_get(np);
if (! of_get_property(np, "ibm,capp-timebase-sync", NULL)) {
of_node_put(np);
- pr_err("PSL: Timebase sync: OPAL support missing\n");
- return 0;
+ dev_info(&dev->dev, "PSL timebase inactive: OPAL support missing\n");
+ return;
}
of_node_put(np);
@@ -428,8 +430,8 @@ static int cxl_setup_psl_timebase(struct cxl *adapter, struct pci_dev *dev)
do {
msleep(1);
if (retry++ > 5) {
- pr_err("PSL: Timebase sync: giving up!\n");
- return -EIO;
+ dev_info(&dev->dev, "PSL timebase can't synchronize\n");
+ return;
}
psl_tb = cxl_p1_read(adapter, CXL_PSL_Timebase);
delta = mftb() - psl_tb;
@@ -437,7 +439,8 @@ static int cxl_setup_psl_timebase(struct cxl *adapter, struct pci_dev *dev)
delta = -delta;
} while (tb_to_ns(delta) > 16000);
- return 0;
+ adapter->psl_timebase_synced = true;
+ return;
}
static int init_implementation_afu_regs(struct cxl_afu *afu)
@@ -1183,8 +1186,8 @@ static int cxl_configure_adapter(struct cxl *adapter, struct pci_dev *dev)
if ((rc = pnv_phb_to_cxl_mode(dev, OPAL_PHB_CAPI_MODE_SNOOP_ON)))
goto err;
- if ((rc = cxl_setup_psl_timebase(adapter, dev)))
- goto err;
+ /* Ignore error, adapter init is not dependant on timebase sync */
+ cxl_setup_psl_timebase(adapter, dev);
if ((rc = cxl_native_register_psl_err_irq(adapter)))
goto err;