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Subject[PATCH v2 1/3] scsi: ufs: introduce vendor isr
Date
This patch is to activate some interrupt sources
that aren't defined in UFSHCI specifications. Those
purpose could be error handling, workaround or whatever.

Signed-off-by: Kiwoong Kim <kwmad.kim@samsung.com>
---
drivers/scsi/ufs/ufshcd.c | 14 +++++++++++++-
drivers/scsi/ufs/ufshcd.h | 1 +
2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 3841ab49..604c505 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -218,6 +218,13 @@ static struct ufs_dev_fix ufs_fixups[] = {
END_FIX
};

+static inline irqreturn_t
+ufshcd_vendor_isr_def(struct ufs_hba *hba)
+{
+ return IRQ_NONE;
+}
+DEFINE_STATIC_CALL(vendor_isr, ufshcd_vendor_isr_def);
+
static irqreturn_t ufshcd_tmc_handler(struct ufs_hba *hba);
static void ufshcd_async_scan(void *data, async_cookie_t cookie);
static int ufshcd_reset_and_restore(struct ufs_hba *hba);
@@ -6445,7 +6452,9 @@ static irqreturn_t ufshcd_tmc_handler(struct ufs_hba *hba)
*/
static irqreturn_t ufshcd_sl_intr(struct ufs_hba *hba, u32 intr_status)
{
- irqreturn_t retval = IRQ_NONE;
+ irqreturn_t retval;
+
+ retval = static_call(vendor_isr)(hba);

if (intr_status & UFSHCD_UIC_MASK)
retval |= ufshcd_uic_cmd_compl(hba, intr_status);
@@ -8533,6 +8542,9 @@ static int ufshcd_variant_hba_init(struct ufs_hba *hba)
if (err)
dev_err(hba->dev, "%s: variant %s init failed err %d\n",
__func__, ufshcd_get_var_name(hba), err);
+
+ if (hba->vops->intr)
+ static_call_update(vendor_isr, *hba->vops->intr);
out:
return err;
}
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 52ea6f3..7af5d5b 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -356,6 +356,7 @@ struct ufs_hba_variant_ops {
const union ufs_crypto_cfg_entry *cfg, int slot);
void (*event_notify)(struct ufs_hba *hba,
enum ufs_event_type evt, void *data);
+ irqreturn_t (*intr)(struct ufs_hba *hba);
};

/* clock gating state */
--
2.7.4
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