Re: [PATCH] lpfc: Fix compilation errors on kernels with no CONFIG_DEBUG_FS

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On 9/7/2021 4:06 PM, Nathan Chancellor wrote:
On Mon, Aug 30, 2021 at 04:13:05PM -0700, James Smart wrote:
The Kernel test robot flagged the following warning:
".../lpfc_init.c:7788:35: error: 'struct lpfc_sli4_hba' has no member
named 'c_stat'"

Reviewing this issue highlighted that one of the recent patches caused
the driver to no longer compile cleanly if CONFIG_DEBUG_FS is not set.

Correct the different areas that are failing to compile.

Fixes: 02243836ad6f ("scsi: lpfc: Add support for the CM framework")
Co-developed-by: Justin Tee <justin.tee@xxxxxxxxxxxx>
Signed-off-by: Justin Tee <justin.tee@xxxxxxxxxxxx>
Signed-off-by: James Smart <jsmart2021@xxxxxxxxx>

I got bit by this in certain configurations, it would be helpful to get
this into mainline sooner rather than later.

Reviewed-by: Nathan Chancellor <nathan@xxxxxxxxxx>

Couple of comments below.

---
  drivers/scsi/lpfc/lpfc_init.c | 12 ++++++++----
  drivers/scsi/lpfc/lpfc_nvme.c |  2 --
  drivers/scsi/lpfc/lpfc_scsi.c |  4 ----
  3 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index d3f1fa38269f..a6127a51b4fe 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -8254,7 +8254,11 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
  		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
  				"3331 Failed allocating per cpu cgn stats\n");
  		rc = -ENOMEM;
-		goto out_free_hba_hdwq_info;
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+		goto out_free_hba_hdwq_stat;
+#else
+		goto out_free_hba_idle_stat;
+#endif
  	}
/*
@@ -8276,12 +8280,12 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
return 0; -out_free_hba_hdwq_info:

Wouldn't it be simpler to just move the ifdef up one line and the endif
down one line to avoid the ifdef in the first hunk?

Yep. It is simpler.


...

Someone is probably going to come along and complain that the 0L is a
dead store. I would remove the assignment at the least but it might be
worth combining the two lines.

NP. I'll take care of it.

-- james




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