xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

cxl: Allow initialization on timebase sync failures

Browse Source 
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>
This commit is contained in:
Frederic Barrat
2016-03-21 14:32:48 -05:00
committed by Michael Ellerman
parent bb62bad623
commit e009a7e858
5 changed files with 37 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/misc/cxl/guest.c
View File

@@ -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;