HSI changes for the v3.17 series

* misc. fixes in SSI related drivers
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Merge tag 'hsi-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi

Pull HSI changes from Sebastian Reichel:
 "Misc fixes in SSI related drivers"

* tag 'hsi-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi:
  HSI: omap_ssi: Fix return value check in ssi_debug_add_ctrl()
  HSI: omap_ssi_port: Fix return value check in ssi_debug_add_port()
  HSI: ssi_protocol: Fix sparse non static symbol warning
  drivers/hsi/controllers/omap_ssi{,_port}.c: fix failure checks

drivers/hsi/clients/ssi_protocol.c

@@ -901,7 +901,7 @@ out:
 	ssip_free_data(msg);
 }
 
-void ssip_port_event(struct hsi_client *cl, unsigned long event)
+static void ssip_port_event(struct hsi_client *cl, unsigned long event)
 {
 	switch (event) {
 	case HSI_EVENT_START_RX:

drivers/hsi/controllers/omap_ssi.c

@@ -148,14 +148,14 @@ static int __init ssi_debug_add_ctrl(struct hsi_controller *ssi)
 
 	/* SSI controller */
 	omap_ssi->dir = debugfs_create_dir(dev_name(&ssi->device), NULL);
-	if (IS_ERR(omap_ssi->dir))
-		return PTR_ERR(omap_ssi->dir);
+	if (!omap_ssi->dir)
+		return -ENOMEM;
 
 	debugfs_create_file("regs", S_IRUGO, omap_ssi->dir, ssi,
 								&ssi_regs_fops);
 	/* SSI GDD (DMA) */
 	dir = debugfs_create_dir("gdd", omap_ssi->dir);
-	if (IS_ERR(dir))
+	if (!dir)
 		goto rback;
 	debugfs_create_file("regs", S_IRUGO, dir, ssi, &ssi_gdd_regs_fops);
 
@@ -163,7 +163,7 @@ static int __init ssi_debug_add_ctrl(struct hsi_controller *ssi)
 rback:
 	debugfs_remove_recursive(omap_ssi->dir);
 
-	return PTR_ERR(dir);
+	return -ENOMEM;
 }
 
 static void ssi_debug_remove_ctrl(struct hsi_controller *ssi)
@@ -353,12 +353,12 @@ static int __init ssi_add_controller(struct hsi_controller *ssi,
 	err = ssi_get_iomem(pd, "gdd", &omap_ssi->gdd, NULL);
 	if (err < 0)
 		goto out_err;
-	omap_ssi->gdd_irq = platform_get_irq_byname(pd, "gdd_mpu");
-	if (omap_ssi->gdd_irq < 0) {
+	err = platform_get_irq_byname(pd, "gdd_mpu");
+	if (err < 0) {
 		dev_err(&pd->dev, "GDD IRQ resource missing\n");
-		err = omap_ssi->gdd_irq;
 		goto out_err;
 	}
+	omap_ssi->gdd_irq = err;
 	tasklet_init(&omap_ssi->gdd_tasklet, ssi_gdd_tasklet,
 							(unsigned long)ssi);
 	err = devm_request_irq(&ssi->device, omap_ssi->gdd_irq, ssi_gdd_isr,

drivers/hsi/controllers/omap_ssi_port.c

@@ -177,13 +177,13 @@ static int __init ssi_debug_add_port(struct omap_ssi_port *omap_port,
 	struct hsi_port *port = to_hsi_port(omap_port->dev);
 
 	dir = debugfs_create_dir(dev_name(omap_port->dev), dir);
-	if (IS_ERR(dir))
-		return PTR_ERR(dir);
+	if (!dir)
+		return -ENOMEM;
 	omap_port->dir = dir;
 	debugfs_create_file("regs", S_IRUGO, dir, port, &ssi_port_regs_fops);
 	dir = debugfs_create_dir("sst", dir);
-	if (IS_ERR(dir))
-		return PTR_ERR(dir);
+	if (!dir)
+		return -ENOMEM;
 	debugfs_create_file("divisor", S_IRUGO | S_IWUSR, dir, port,
 			    &ssi_sst_div_fops);
 
@@ -1013,11 +1013,12 @@ static int __init ssi_port_irq(struct hsi_port *port,
 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);
 	int err;
 
-	omap_port->irq = platform_get_irq(pd, 0);
-	if (omap_port->irq < 0) {
+	err = platform_get_irq(pd, 0);
+	if (err < 0) {
 		dev_err(&port->device, "Port IRQ resource missing\n");
-		return omap_port->irq;
+		return err;
 	}
+	omap_port->irq = err;
 	tasklet_init(&omap_port->pio_tasklet, ssi_pio_tasklet,
 							(unsigned long)port);
 	err = devm_request_irq(&port->device, omap_port->irq, ssi_pio_isr,