[PATCH] scsi: hisi_sas: fix IRQ checks

[Sergey Shtylyov <s.shtylyov@xxxxxxxxxxxx>]

Commit df2d8213d9e3 ("hisi_sas: use platform_get_irq()") failed to take
into account that irq_of_parse_and_map() and platform_get_irq() have a
different way of indicating an error: the former returns 0 and the latter
returns a negative error code. Fix up the IRQ checks!

Fixes: df2d8213d9e3 ("hisi_sas: use platform_get_irq()")
Signed-off-by: Sergey Shtylyov <s.shtylyov@xxxxxxxxxxxx>

---
 drivers/scsi/hisi_sas/hisi_sas_v1_hw.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Index: scsi/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
===================================================================
--- scsi.orig/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
+++ scsi/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
@@ -1646,7 +1646,7 @@ static int interrupt_init_v1_hw(struct h
 		idx = i * HISI_SAS_PHY_INT_NR;
 		for (j = 0; j < HISI_SAS_PHY_INT_NR; j++, idx++) {
 			irq = platform_get_irq(pdev, idx);
-			if (!irq) {
+			if (irq < 0) {
 				dev_err(dev, "irq init: fail map phy interrupt %d\n",
 					idx);
 				return -ENOENTr;
@@ -1665,7 +1665,7 @@ static int interrupt_init_v1_hw(struct h
 	idx = hisi_hba->n_phy * HISI_SAS_PHY_INT_NR;
 	for (i = 0; i < hisi_hba->queue_count; i++, idx++) {
 		irq = platform_get_irq(pdev, idx);
-		if (!irq) {
+		if (irq < 0) {
 			dev_err(dev, "irq init: could not map cq interrupt %d\n",
 				idx);
 			return -ENOENT;
@@ -1683,7 +1683,7 @@ static int interrupt_init_v1_hw(struct h
 	idx = (hisi_hba->n_phy * HISI_SAS_PHY_INT_NR) + hisi_hba->queue_count;
 	for (i = 0; i < HISI_SAS_FATAL_INT_NR; i++, idx++) {
 		irq = platform_get_irq(pdev, idx);
-		if (!irq) {
+		if (irq < 0) {
 			dev_err(dev, "irq init: could not map fatal interrupt %d\n",
 				idx);
 			return -ENOENT;