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authorUma Krishnan <ukrishn@linux.vnet.ibm.com>2018-03-26 19:35:15 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2018-04-19 02:32:50 +0300
commit9433fb32b7c57c0e1cee49025a720b38b449e68c (patch)
tree6ca1ccbe3aaada2f05b87fbc746391fd8b757695
parent66ae644b922abcbf6d3303a4e69f658b02165b31 (diff)
downloadlinux-9433fb32b7c57c0e1cee49025a720b38b449e68c.tar.xz
scsi: cxlflash: Support AFU reset
The cxlflash core driver resets the AFU when the master contexts are created in the initialization or recovery paths. Today, the OCXL provider service to perform this operation is pending implementation. To avoid a crash due to a missing fop, log an error once and return success to continue with execution. Signed-off-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com> Acked-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
-rw-r--r--drivers/scsi/cxlflash/ocxl_hw.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/scsi/cxlflash/ocxl_hw.c b/drivers/scsi/cxlflash/ocxl_hw.c
index 5b5565d6572e..0a95b5f25380 100644
--- a/drivers/scsi/cxlflash/ocxl_hw.c
+++ b/drivers/scsi/cxlflash/ocxl_hw.c
@@ -468,6 +468,22 @@ out:
}
/**
+ * ocxlflash_afu_reset() - reset the AFU
+ * @ctx_cookie: Adapter context.
+ */
+static int ocxlflash_afu_reset(void *ctx_cookie)
+{
+ struct ocxlflash_context *ctx = ctx_cookie;
+ struct device *dev = ctx->hw_afu->dev;
+
+ /* Pending implementation from OCXL transport services */
+ dev_err_once(dev, "%s: afu_reset() fop not supported\n", __func__);
+
+ /* Silently return success until it is implemented */
+ return 0;
+}
+
+/**
* ocxlflash_set_master() - sets the context as master
* @ctx_cookie: Adapter context to set as master.
*/
@@ -1401,6 +1417,7 @@ const struct cxlflash_backend_ops cxlflash_ocxl_ops = {
.get_irq_objhndl = ocxlflash_get_irq_objhndl,
.start_context = ocxlflash_start_context,
.stop_context = ocxlflash_stop_context,
+ .afu_reset = ocxlflash_afu_reset,
.set_master = ocxlflash_set_master,
.get_context = ocxlflash_get_context,
.dev_context_init = ocxlflash_dev_context_init,