[SPARC64]: Fix request_irq() ignored result warnings in PCI controller code.

Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 104 insertions, 46 deletions

diff --git a/arch/sparc64/kernel/pci_psycho.c b/arch/sparc64/kernel/pci_psycho.c
index 401e5dfe9bd5..2edcb1dd13c3 100644
--- a/arch/sparc64/kernel/pci_psycho.c
+++ b/arch/sparc64/kernel/pci_psycho.c
@@ -836,6 +836,7 @@ static void psycho_register_error_handlers(struct pci_pbm_info *pbm)
         struct of_device *op = of_find_device_by_node(pbm->prom_node);
         unsigned long base = pbm->controller_regs;
         u64 tmp;
+        int err;
 
         if (!op)
                 return;
@@ -852,12 +853,27 @@ static void psycho_register_error_handlers(struct pci_pbm_info *pbm)
         if (op->num_irqs < 6)
                 return;
 
-        request_irq(op->irqs[1], psycho_ue_intr, 0,
-                    "PSYCHO_UE", pbm);
-        request_irq(op->irqs[2], psycho_ce_intr, 0,
-                    "PSYCHO_CE", pbm);
-        request_irq(op->irqs[0], psycho_pcierr_intr, 0,
-                    "PSYCHO_PCIERR", pbm);
+        /* We really mean to ignore the return result here.  Two
+         * PCI controller share the same interrupt numbers and
+         * drive the same front-end hardware.  Whichever of the
+         * two get in here first will register the IRQ handler
+         * the second will just error out since we do not pass in
+         * IRQF_SHARED.
+         */
+        err = request_irq(op->irqs[1], psycho_ue_intr, 0,
+                          "PSYCHO_UE", pbm);
+        err = request_irq(op->irqs[2], psycho_ce_intr, 0,
+                          "PSYCHO_CE", pbm);
+
+        /* This one, however, ought not to fail.  We can just warn
+         * about it since the system can still operate properly even
+         * if this fails.
+         */
+        err = request_irq(op->irqs[0], psycho_pcierr_intr, 0,
+                          "PSYCHO_PCIERR", pbm);
+        if (err)
+                printk(KERN_WARNING "%s: Could not register PCIERR, "
+                       "err=%d\n", pbm->name, err);
 
         /* Enable UE and CE interrupts for controller. */
         psycho_write(base + PSYCHO_ECC_CTRL,
diff --git a/arch/sparc64/kernel/pci_sabre.c b/arch/sparc64/kernel/pci_sabre.c
index 863308c8955d..4cefe6e83b24 100644
--- a/arch/sparc64/kernel/pci_sabre.c
+++ b/arch/sparc64/kernel/pci_sabre.c
@@ -831,6 +831,7 @@ static void sabre_register_error_handlers(struct pci_pbm_info *pbm)
         struct of_device *op;
         unsigned long base = pbm->controller_regs;
         u64 tmp;
+        int err;
 
         if (pbm->chip_type == PBM_CHIP_TYPE_SABRE)
                 dp = dp->parent;
@@ -857,15 +858,24 @@ static void sabre_register_error_handlers(struct pci_pbm_info *pbm)
                      SABRE_UEAFSR_SDRD | SABRE_UEAFSR_SDWR |
                      SABRE_UEAFSR_SDTE | SABRE_UEAFSR_PDTE));
 
-        request_irq(op->irqs[1], sabre_ue_intr, 0, "SABRE_UE", pbm);
+        err = request_irq(op->irqs[1], sabre_ue_intr, 0, "SABRE_UE", pbm);
+        if (err)
+                printk(KERN_WARNING "%s: Couldn't register UE, err=%d.\n",
+                       pbm->name, err);
 
         sabre_write(base + SABRE_CE_AFSR,
                     (SABRE_CEAFSR_PDRD | SABRE_CEAFSR_PDWR |
                      SABRE_CEAFSR_SDRD | SABRE_CEAFSR_SDWR));
 
-        request_irq(op->irqs[2], sabre_ce_intr, 0, "SABRE_CE", pbm);
-        request_irq(op->irqs[0], sabre_pcierr_intr, 0,
-                    "SABRE_PCIERR", pbm);
+        err = request_irq(op->irqs[2], sabre_ce_intr, 0, "SABRE_CE", pbm);
+        if (err)
+                printk(KERN_WARNING "%s: Couldn't register CE, err=%d.\n",
+                       pbm->name, err);
+        err = request_irq(op->irqs[0], sabre_pcierr_intr, 0,
+                          "SABRE_PCIERR", pbm);
+        if (err)
+                printk(KERN_WARNING "%s: Couldn't register PCIERR, err=%d.\n",
+                       pbm->name, err);
 
         tmp = sabre_read(base + SABRE_PCICTRL);
         tmp |= SABRE_PCICTRL_ERREN;
diff --git a/arch/sparc64/kernel/pci_schizo.c b/arch/sparc64/kernel/pci_schizo.c
index 312f3e4f2ed4..e375d72b8eed 100644
--- a/arch/sparc64/kernel/pci_schizo.c
+++ b/arch/sparc64/kernel/pci_schizo.c
@@ -984,6 +984,7 @@ static void tomatillo_register_error_handlers(struct pci_pbm_info *pbm)
 {
         struct of_device *op = of_find_device_by_node(pbm->prom_node);
         u64 tmp, err_mask, err_no_mask;
+        int err;
 
         /* Tomatillo IRQ property layout is:
          * 0: PCIERR
@@ -993,24 +994,39 @@ static void tomatillo_register_error_handlers(struct pci_pbm_info *pbm)
          * 4: POWER FAIL?
          */
 
-        if (pbm_routes_this_ino(pbm, SCHIZO_UE_INO))
-                request_irq(op->irqs[1], schizo_ue_intr, 0,
-                            "TOMATILLO_UE", pbm);
-
-        if (pbm_routes_this_ino(pbm, SCHIZO_CE_INO))
-                request_irq(op->irqs[2], schizo_ce_intr, 0,
-                            "TOMATILLO_CE", pbm);
-
-        if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_A_INO))
-                request_irq(op->irqs[0], schizo_pcierr_intr, 0,
-                            "TOMATILLO_PCIERR", pbm);
-        else if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_B_INO))
-                request_irq(op->irqs[0], schizo_pcierr_intr, 0,
-                            "TOMATILLO_PCIERR", pbm);
-
-        if (pbm_routes_this_ino(pbm, SCHIZO_SERR_INO))
-                request_irq(op->irqs[3], schizo_safarierr_intr, 0,
-                            "TOMATILLO_SERR", pbm);
+        if (pbm_routes_this_ino(pbm, SCHIZO_UE_INO)) {
+                err = request_irq(op->irqs[1], schizo_ue_intr, 0,
+                                  "TOMATILLO_UE", pbm);
+                if (err)
+                        printk(KERN_WARNING "%s: Could not register UE, "
+                               "err=%d\n", pbm->name, err);
+        }
+        if (pbm_routes_this_ino(pbm, SCHIZO_CE_INO)) {
+                err = request_irq(op->irqs[2], schizo_ce_intr, 0,
+                                  "TOMATILLO_CE", pbm);
+                if (err)
+                        printk(KERN_WARNING "%s: Could not register CE, "
+                               "err=%d\n", pbm->name, err);
+        }
+        err = 0;
+        if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_A_INO)) {
+                err = request_irq(op->irqs[0], schizo_pcierr_intr, 0,
+                                  "TOMATILLO_PCIERR", pbm);
+        } else if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_B_INO)) {
+                err = request_irq(op->irqs[0], schizo_pcierr_intr, 0,
+                                  "TOMATILLO_PCIERR", pbm);
+        }
+        if (err)
+                printk(KERN_WARNING "%s: Could not register PCIERR, "
+                       "err=%d\n", pbm->name, err);
+
+        if (pbm_routes_this_ino(pbm, SCHIZO_SERR_INO)) {
+                err = request_irq(op->irqs[3], schizo_safarierr_intr, 0,
+                                  "TOMATILLO_SERR", pbm);
+                if (err)
+                        printk(KERN_WARNING "%s: Could not register SERR, "
+                               "err=%d\n", pbm->name, err);
+        }
 
         /* Enable UE and CE interrupts for controller. */
         schizo_write(pbm->controller_regs + SCHIZO_ECC_CTRL,
@@ -1064,6 +1080,7 @@ static void schizo_register_error_handlers(struct pci_pbm_info *pbm)
 {
         struct of_device *op = of_find_device_by_node(pbm->prom_node);
         u64 tmp, err_mask, err_no_mask;
+        int err;
 
         /* Schizo IRQ property layout is:
          * 0: PCIERR
@@ -1073,24 +1090,39 @@ static void schizo_register_error_handlers(struct pci_pbm_info *pbm)
          * 4: POWER FAIL?
          */
 
-        if (pbm_routes_this_ino(pbm, SCHIZO_UE_INO))
-                request_irq(op->irqs[1], schizo_ue_intr, 0,
-                            "SCHIZO_UE", pbm);
-
-        if (pbm_routes_this_ino(pbm, SCHIZO_CE_INO))
-                request_irq(op->irqs[2], schizo_ce_intr, 0,
-                            "SCHIZO_CE", pbm);
-
-        if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_A_INO))
-                request_irq(op->irqs[0], schizo_pcierr_intr, 0,
-                            "SCHIZO_PCIERR", pbm);
-        else if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_B_INO))
-                request_irq(op->irqs[0], schizo_pcierr_intr, 0,
-                            "SCHIZO_PCIERR", pbm);
-
-        if (pbm_routes_this_ino(pbm, SCHIZO_SERR_INO))
-                request_irq(op->irqs[3], schizo_safarierr_intr, 0,
-                            "SCHIZO_SERR", pbm);
+        if (pbm_routes_this_ino(pbm, SCHIZO_UE_INO)) {
+                err = request_irq(op->irqs[1], schizo_ue_intr, 0,
+                                  "SCHIZO_UE", pbm);
+                if (err)
+                        printk(KERN_WARNING "%s: Could not register UE, "
+                               "err=%d\n", pbm->name, err);
+        }
+        if (pbm_routes_this_ino(pbm, SCHIZO_CE_INO)) {
+                err = request_irq(op->irqs[2], schizo_ce_intr, 0,
+                                  "SCHIZO_CE", pbm);
+                if (err)
+                        printk(KERN_WARNING "%s: Could not register CE, "
+                               "err=%d\n", pbm->name, err);
+        }
+        err = 0;
+        if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_A_INO)) {
+                err = request_irq(op->irqs[0], schizo_pcierr_intr, 0,
+                                  "SCHIZO_PCIERR", pbm);
+        } else if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_B_INO)) {
+                err = request_irq(op->irqs[0], schizo_pcierr_intr, 0,
+                                  "SCHIZO_PCIERR", pbm);
+        }
+        if (err)
+                printk(KERN_WARNING "%s: Could not register PCIERR, "
+                       "err=%d\n", pbm->name, err);
+
+        if (pbm_routes_this_ino(pbm, SCHIZO_SERR_INO)) {
+                err = request_irq(op->irqs[3], schizo_safarierr_intr, 0,
+                                  "SCHIZO_SERR", pbm);
+                if (err)
+                        printk(KERN_WARNING "%s: Could not register SERR, "
+                               "err=%d\n", pbm->name, err);
+        }
 
         /* Enable UE and CE interrupts for controller. */
         schizo_write(pbm->controller_regs + SCHIZO_ECC_CTRL,