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-rw-r--r--sys/dev/usb/usb_ioctl.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/dev/usb/usb_ioctl.h b/sys/dev/usb/usb_ioctl.h
index e7e63fb9a895..c4023cab5f16 100644
--- a/sys/dev/usb/usb_ioctl.h
+++ b/sys/dev/usb/usb_ioctl.h
@@ -224,7 +224,7 @@ struct usb_fs_uninit {
} USB_IOCTL_STRUCT_ALIGN(1);
struct usb_fs_open {
-#define USB_FS_MAX_BUFSIZE (1 << 18)
+#define USB_FS_MAX_BUFSIZE (1 << 25) /* 32 MBytes */
uint32_t max_bufsize;
#define USB_FS_MAX_FRAMES (1U << 12)
#define USB_FS_MAX_FRAMES_PRE_SCALE (1U << 31) /* for ISOCHRONOUS transfers */