diff options
| author |   Frederic Barrat <fbarrat@linux.vnet.ibm.com> | 2016-03-21 14:32:48 -0500 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2016-04-22 21:45:44 +1000 |
| commit | e009a7e858fed215cb4eed5174a31cadd42d8797 (patch) | |
| tree | 374b3df8a670dfbc72c4eb960f6b488a916958ea /drivers/misc/cxl/guest.c | |
| parent | tool/perf: Add sample_reg_mask to include all perf_regs (diff) | |
| download | linux-dev-e009a7e858fed215cb4eed5174a31cadd42d8797.tar.xz linux-dev-e009a7e858fed215cb4eed5174a31cadd42d8797.zip | |
cxl: Allow initialization on timebase sync failures
Failure to synchronize the PSL timebase currently prevents the
initialization of the cxl card, thus rendering the card useless. This
is too extreme for a feature which is rarely used, if at all. No
hardware AFUs or software is currently using PSL timebase.
This patch still tries to synchronize the PSL timebase when the card
is initialized, but ignores the error if it can't. Instead, it reports
a status via /sys.
Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'drivers/misc/cxl/guest.c')
| -rw-r--r-- | drivers/misc/cxl/guest.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/misc/cxl/guest.c b/drivers/misc/cxl/guest.c index 8213372de2b7..a83acf9f8cd9 100644 --- a/drivers/misc/cxl/guest.c +++ b/drivers/misc/cxl/guest.c @@ -1101,6 +1101,12 @@ struct cxl *cxl_guest_init_adapter(struct device_node *np, struct platform_devic adapter->dev.release = release_adapter; dev_set_drvdata(&pdev->dev, adapter); + /* + * Hypervisor controls PSL timebase initialization (p1 register). + * On FW840, PSL is initialized. + */ + adapter->psl_timebase_synced = true; + if ((rc = cxl_of_read_adapter_handle(adapter, np))) goto err1; |