This patch is to declare override_cqe_ocs callback to
override OCS value.

Signed-off-by: Kiwoong Kim <kwmad.kim@samsung.com>
---
 drivers/ufs/core/ufshcd-priv.h | 9 +++++++++
 drivers/ufs/core/ufshcd.c      | 4 +++-
 include/ufs/ufshcd.h           | 1 +
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/ufs/core/ufshcd-priv.h b/drivers/ufs/core/ufshcd-priv.h
index ce36154..be593d1 100644
--- a/drivers/ufs/core/ufshcd-priv.h
+++ b/drivers/ufs/core/ufshcd-priv.h
@@ -275,6 +275,15 @@ static inline int ufshcd_mcq_vops_config_esi(struct ufs_hba *hba)
 	return -EOPNOTSUPP;
 }
 
+static inline enum utp_ocs ufshcd_vops_override_cqe_ocs(struct ufs_hba *hba,
+		enum utp_ocs ocs)
+{
+	if (hba->vops && hba->vops->override_cqe_ocs)
+		return hba->vops->override_cqe_ocs(hba, ocs);
+
+	return ocs;
+}
+
 extern const struct ufs_pm_lvl_states ufs_pm_lvl_states[];
 
 /**
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 0dd2605..83a1870 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -825,7 +825,9 @@ static enum utp_ocs ufshcd_get_tr_ocs(struct ufshcd_lrb *lrbp,
 				      struct cq_entry *cqe)
 {
 	if (cqe)
-		return le32_to_cpu(cqe->status) & MASK_OCS;
+		return ufshcd_vops_override_cqe_ocs(hba,
+						    le32_to_cpu(cqe->status) &
+						    MASK_OCS);
 
 	return lrbp->utr_descriptor_ptr->header.ocs & MASK_OCS;
 }
diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h
index a43b142..64444fb 100644
--- a/include/ufs/ufshcd.h
+++ b/include/ufs/ufshcd.h
@@ -382,6 +382,7 @@ struct ufs_hba_variant_ops {
 	int	(*get_outstanding_cqs)(struct ufs_hba *hba,
 				       unsigned long *ocqs);
 	int	(*config_esi)(struct ufs_hba *hba);
+	enum utp_ocs	(*override_cqe_ocs)(struct ufs_hba *hba, enum utp_ocs);
 };
 
 /* clock gating state  */
-- 
2.7.4

Hi Kiwoong,

kernel test robot noticed the following build errors:

[auto build test ERROR on jejb-scsi/for-next]
[also build test ERROR on mkp-scsi/for-next krzk/for-next linus/master v6.11-rc4 next-20240822]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Kiwoong-Kim/scsi-ufs-core-introduce-override_cqe_ocs/20240821-144404
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git for-next
patch link:    https://lore.kernel.org/r/895b69ac1e938490cd1d17b5f82b6f730bcd82c2.1724222619.git.kwmad.kim%40samsung.com
patch subject: [PATCH v1 1/2] scsi: ufs: core: introduce override_cqe_ocs
config: x86_64-kexec (https://download.01.org/0day-ci/archive/20240822/202408221823.jnozM7Ys-lkp@intel.com/config)
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240822/202408221823.jnozM7Ys-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202408221823.jnozM7Ys-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/ufs/core/ufshcd.c:828:39: error: use of undeclared identifier 'hba'
     828 |                 return ufshcd_vops_override_cqe_ocs(hba,
         |                                                     ^
   drivers/ufs/core/ufshcd.c:10344:44: warning: shift count >= width of type [-Wshift-count-overflow]
    10344 |                 if (!dma_set_mask_and_coherent(hba->dev, DMA_BIT_MASK(64)))
          |                                                          ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:77:54: note: expanded from macro 'DMA_BIT_MASK'
      77 | #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
         |                                                      ^ ~~~
   1 warning and 1 error generated.


vim +/hba +828 drivers/ufs/core/ufshcd.c

   814	
   815	/**
   816	 * ufshcd_get_tr_ocs - Get the UTRD Overall Command Status
   817	 * @lrbp: pointer to local command reference block
   818	 * @cqe: pointer to the completion queue entry
   819	 *
   820	 * This function is used to get the OCS field from UTRD
   821	 *
   822	 * Return: the OCS field in the UTRD.
   823	 */
   824	static enum utp_ocs ufshcd_get_tr_ocs(struct ufshcd_lrb *lrbp,
   825					      struct cq_entry *cqe)
   826	{
   827		if (cqe)
 > 828			return ufshcd_vops_override_cqe_ocs(hba,
   829							    le32_to_cpu(cqe->status) &
   830							    MASK_OCS);
   831	
   832		return lrbp->utr_descriptor_ptr->header.ocs & MASK_OCS;
   833	}
   834	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki