These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

1 files changed, 17 insertions, 6 deletions

diff --git a/kernel/drivers/vme/bridges/vme_ca91cx42.c b/kernel/drivers/vme/bridges/vme_ca91cx42.c
index 18078ecbf..b79a74a98 100644
--- a/kernel/drivers/vme/bridges/vme_ca91cx42.c
+++ b/kernel/drivers/vme/bridges/vme_ca91cx42.c
@@ -204,8 +204,7 @@ static int ca91cx42_irq_init(struct vme_bridge *ca91cx42_bridge)
 	/* Need pdev */
 	pdev = container_of(ca91cx42_bridge->parent, struct pci_dev, dev);
 
-	/* Initialise list for VME bus errors */
-	INIT_LIST_HEAD(&ca91cx42_bridge->vme_errors);
+	INIT_LIST_HEAD(&ca91cx42_bridge->vme_error_handlers);
 
 	mutex_init(&ca91cx42_bridge->irq_mtx);
 
@@ -554,7 +553,7 @@ static int ca91cx42_alloc_resource(struct vme_master_resource *image,
 	image->bus_resource.flags = IORESOURCE_MEM;
 
 	retval = pci_bus_alloc_resource(pdev->bus,
-		&image->bus_resource, size, size, PCIBIOS_MIN_MEM,
+		&image->bus_resource, size, 0x10000, PCIBIOS_MIN_MEM,
 		0, NULL, NULL);
 	if (retval) {
 		dev_err(ca91cx42_bridge->parent, "Failed to allocate mem "
@@ -1192,7 +1191,7 @@ static int ca91cx42_dma_list_exec(struct vme_dma_list *list)
 {
 	struct vme_dma_resource *ctrlr;
 	struct ca91cx42_dma_entry *entry;
-	int retval = 0;
+	int retval;
 	dma_addr_t bus_addr;
 	u32 val;
 	struct device *dev;
@@ -1245,8 +1244,18 @@ static int ca91cx42_dma_list_exec(struct vme_dma_list *list)
 
 	iowrite32(val, bridge->base + DGCS);
 
-	wait_event_interruptible(bridge->dma_queue,
-		ca91cx42_dma_busy(ctrlr->parent));
+	retval = wait_event_interruptible(bridge->dma_queue,
+					  ca91cx42_dma_busy(ctrlr->parent));
+
+	if (retval) {
+		val = ioread32(bridge->base + DGCS);
+		iowrite32(val | CA91CX42_DGCS_STOP_REQ, bridge->base + DGCS);
+		/* Wait for the operation to abort */
+		wait_event(bridge->dma_queue,
+			   ca91cx42_dma_busy(ctrlr->parent));
+		retval = -EINTR;
+		goto exit;
+	}
 
 	/*
 	 * Read status register, this register is valid until we kick off a
@@ -1259,8 +1268,10 @@ static int ca91cx42_dma_list_exec(struct vme_dma_list *list)
 
 		dev_err(dev, "ca91c042: DMA Error. DGCS=%08X\n", val);
 		val = ioread32(bridge->base + DCTL);
+		retval = -EIO;
 	}
 
+exit:
 	/* Remove list from running list */
 	mutex_lock(&ctrlr->mtx);
 	list_del(&list->list);