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path: root/drivers/usb/gadget/gr_udc.c
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Diffstat (limited to 'drivers/usb/gadget/gr_udc.c')
-rw-r--r--drivers/usb/gadget/gr_udc.c55
1 files changed, 29 insertions, 26 deletions
diff --git a/drivers/usb/gadget/gr_udc.c b/drivers/usb/gadget/gr_udc.c
index f984ee75324d..99a37ed03e27 100644
--- a/drivers/usb/gadget/gr_udc.c
+++ b/drivers/usb/gadget/gr_udc.c
@@ -143,6 +143,7 @@ static void gr_seq_ep_show(struct seq_file *seq, struct gr_ep *ep)
seq_printf(seq, " wedged = %d\n", ep->wedged);
seq_printf(seq, " callback = %d\n", ep->callback);
seq_printf(seq, " maxpacket = %d\n", ep->ep.maxpacket);
+ seq_printf(seq, " maxpacket_limit = %d\n", ep->ep.maxpacket_limit);
seq_printf(seq, " bytes_per_buffer = %d\n", ep->bytes_per_buffer);
if (mode == 1 || mode == 3)
seq_printf(seq, " nt = %d\n",
@@ -1541,6 +1542,10 @@ static int gr_ep_enable(struct usb_ep *_ep,
} else if (max == 0) {
dev_err(dev->dev, "Max payload cannot be set to 0\n");
return -EINVAL;
+ } else if (max > ep->ep.maxpacket_limit) {
+ dev_err(dev->dev, "Requested max payload %d > limit %d\n",
+ max, ep->ep.maxpacket_limit);
+ return -EINVAL;
}
spin_lock(&ep->dev->lock);
@@ -1679,7 +1684,7 @@ static int gr_queue_ext(struct usb_ep *_ep, struct usb_request *_req,
if (ep->is_in)
gr_dbgprint_request("EXTERN", ep, req);
- ret = gr_queue(ep, req, gfp_flags);
+ ret = gr_queue(ep, req, GFP_ATOMIC);
spin_unlock(&ep->dev->lock);
@@ -1985,8 +1990,8 @@ static int gr_ep_init(struct gr_udc *dev, int num, int is_in, u32 maxplimit)
INIT_LIST_HEAD(&ep->queue);
if (num == 0) {
- _req = gr_alloc_request(&ep->ep, GFP_KERNEL);
- buf = devm_kzalloc(dev->dev, PAGE_SIZE, GFP_DMA | GFP_KERNEL);
+ _req = gr_alloc_request(&ep->ep, GFP_ATOMIC);
+ buf = devm_kzalloc(dev->dev, PAGE_SIZE, GFP_DMA | GFP_ATOMIC);
if (!_req || !buf) {
/* possible _req freed by gr_probe via gr_remove */
return -ENOMEM;
@@ -2020,9 +2025,7 @@ static int gr_udc_init(struct gr_udc *dev)
u32 dmactrl_val;
int i;
int ret = 0;
- u32 *bufsizes;
u32 bufsize;
- int len;
gr_set_address(dev, 0);
@@ -2033,19 +2036,17 @@ static int gr_udc_init(struct gr_udc *dev)
INIT_LIST_HEAD(&dev->ep_list);
gr_set_ep0state(dev, GR_EP0_DISCONNECT);
- bufsizes = (u32 *)of_get_property(np, "epobufsizes", &len);
- len /= sizeof(u32);
for (i = 0; i < dev->nepo; i++) {
- bufsize = (bufsizes && i < len) ? bufsizes[i] : 1024;
+ if (of_property_read_u32_index(np, "epobufsizes", i, &bufsize))
+ bufsize = 1024;
ret = gr_ep_init(dev, i, 0, bufsize);
if (ret)
return ret;
}
- bufsizes = (u32 *)of_get_property(np, "epibufsizes", &len);
- len /= sizeof(u32);
for (i = 0; i < dev->nepi; i++) {
- bufsize = (bufsizes && i < len) ? bufsizes[i] : 1024;
+ if (of_property_read_u32_index(np, "epibufsizes", i, &bufsize))
+ bufsize = 1024;
ret = gr_ep_init(dev, i, 1, bufsize);
if (ret)
return ret;
@@ -2065,9 +2066,9 @@ static int gr_udc_init(struct gr_udc *dev)
return 0;
}
-static int gr_remove(struct platform_device *ofdev)
+static int gr_remove(struct platform_device *pdev)
{
- struct gr_udc *dev = dev_get_drvdata(&ofdev->dev);
+ struct gr_udc *dev = platform_get_drvdata(pdev);
if (dev->added)
usb_del_gadget_udc(&dev->gadget); /* Shuts everything down */
@@ -2077,7 +2078,7 @@ static int gr_remove(struct platform_device *ofdev)
gr_dfs_delete(dev);
if (dev->desc_pool)
dma_pool_destroy(dev->desc_pool);
- dev_set_drvdata(&ofdev->dev, NULL);
+ platform_set_drvdata(pdev, NULL);
gr_free_request(&dev->epi[0].ep, &dev->ep0reqi->req);
gr_free_request(&dev->epo[0].ep, &dev->ep0reqo->req);
@@ -2090,7 +2091,7 @@ static int gr_request_irq(struct gr_udc *dev, int irq)
IRQF_SHARED, driver_name, dev);
}
-static int gr_probe(struct platform_device *ofdev)
+static int gr_probe(struct platform_device *pdev)
{
struct gr_udc *dev;
struct resource *res;
@@ -2098,30 +2099,32 @@ static int gr_probe(struct platform_device *ofdev)
int retval;
u32 status;
- dev = devm_kzalloc(&ofdev->dev, sizeof(*dev), GFP_KERNEL);
+ dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
if (!dev)
return -ENOMEM;
- dev->dev = &ofdev->dev;
+ dev->dev = &pdev->dev;
- res = platform_get_resource(ofdev, IORESOURCE_MEM, 0);
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
regs = devm_ioremap_resource(dev->dev, res);
if (IS_ERR(regs))
return PTR_ERR(regs);
- dev->irq = irq_of_parse_and_map(dev->dev->of_node, 0);
- if (!dev->irq) {
+ dev->irq = platform_get_irq(pdev, 0);
+ if (dev->irq <= 0) {
dev_err(dev->dev, "No irq found\n");
return -ENODEV;
}
/* Some core configurations has separate irqs for IN and OUT events */
- dev->irqi = irq_of_parse_and_map(dev->dev->of_node, 1);
- if (dev->irqi) {
- dev->irqo = irq_of_parse_and_map(dev->dev->of_node, 2);
- if (!dev->irqo) {
+ dev->irqi = platform_get_irq(pdev, 1);
+ if (dev->irqi > 0) {
+ dev->irqo = platform_get_irq(pdev, 2);
+ if (dev->irqo <= 0) {
dev_err(dev->dev, "Found irqi but not irqo\n");
return -ENODEV;
}
+ } else {
+ dev->irqi = 0;
}
dev->gadget.name = driver_name;
@@ -2132,7 +2135,7 @@ static int gr_probe(struct platform_device *ofdev)
spin_lock_init(&dev->lock);
dev->regs = regs;
- dev_set_drvdata(&ofdev->dev, dev);
+ platform_set_drvdata(pdev, dev);
/* Determine number of endpoints and data interface mode */
status = gr_read32(&dev->regs->status);
@@ -2204,7 +2207,7 @@ out:
spin_unlock(&dev->lock);
if (retval)
- gr_remove(ofdev);
+ gr_remove(pdev);
return retval;
}