usb: gadget: ncm: correct endianess conversion

Convert USB descriptor's fields to CPU byte order before using locally in USB
NCM gadget driver.

Tested on MIPS32 big-endian device.

Signed-off-by: Dmytro Milinevskyy <milinevskyy@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 8 insertions, 4 deletions

diff --git a/drivers/usb/gadget/f_ncm.c b/drivers/usb/gadget/f_ncm.c
index f1f66e9c76ba..6c8362f937be 100644
--- a/drivers/usb/gadget/f_ncm.c
+++ b/drivers/usb/gadget/f_ncm.c
@@ -102,7 +102,7 @@ static inline unsigned ncm_bitrate(struct usb_gadget *g)
                                  USB_CDC_NCM_NTB32_SUPPORTED)
 
 static struct usb_cdc_ncm_ntb_parameters ntb_parameters = {
-        .wLength = sizeof ntb_parameters,
+        .wLength = cpu_to_le16(sizeof(ntb_parameters)),
         .bmNtbFormatsSupported = cpu_to_le16(FORMATS_SUPPORTED),
         .dwNtbInMaxSize = cpu_to_le32(NTB_DEFAULT_IN_SIZE),
         .wNdpInDivisor = cpu_to_le16(4),
@@ -869,15 +869,19 @@ static struct sk_buff *ncm_wrap_ntb(struct gether *port,
         struct sk_buff  *skb2;
         int             ncb_len = 0;
         __le16          *tmp;
-        int             div = ntb_parameters.wNdpInDivisor;
-        int             rem = ntb_parameters.wNdpInPayloadRemainder;
+        int             div;
+        int             rem;
         int             pad;
-        int             ndp_align = ntb_parameters.wNdpInAlignment;
+        int             ndp_align;
         int             ndp_pad;
         unsigned        max_size = ncm->port.fixed_in_len;
         struct ndp_parser_opts *opts = ncm->parser_opts;
         unsigned        crc_len = ncm->is_crc ? sizeof(uint32_t) : 0;
 
+        div = le16_to_cpu(ntb_parameters.wNdpInDivisor);
+        rem = le16_to_cpu(ntb_parameters.wNdpInPayloadRemainder);
+        ndp_align = le16_to_cpu(ntb_parameters.wNdpInAlignment);
+
         ncb_len += opts->nth_size;
         ndp_pad = ALIGN(ncb_len, ndp_align) - ncb_len;
         ncb_len += ndp_pad;