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path: root/drivers/usb/core/config.c
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Diffstat (limited to 'drivers/usb/core/config.c')
-rw-r--r--drivers/usb/core/config.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index 151a74a54386..1ac1095bfeac 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -348,6 +348,11 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
/* Validate the wMaxPacketSize field */
maxp = usb_endpoint_maxp(&endpoint->desc);
+ if (maxp == 0) {
+ dev_warn(ddev, "config %d interface %d altsetting %d endpoint 0x%X has wMaxPacketSize 0, skipping\n",
+ cfgno, inum, asnum, d->bEndpointAddress);
+ goto skip_to_next_endpoint_or_interface_descriptor;
+ }
/* Find the highest legal maxpacket size for this endpoint */
i = 0; /* additional transactions per microframe */