HID: hyperv: Correctly access fields declared as __le16

Add the use of le16_to_cpu() for fields declared as __le16. Because
Hyper-V only runs in Little Endian mode, there's no actual bug.
The change is made in the interest of general correctness in
addition to making sparse happy. No functional change.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/1654660177-115463-1-git-send-email-mikelley@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>

diff --git a/drivers/hid/hid-hyperv.c b/drivers/hid/hid-hyperv.c
index 978ee2a..e0bc731 100644 (file)
--- a/drivers/hid/hid-hyperv.c
+++ b/drivers/hid/hid-hyperv.c
@@ -199,7 +199,8 @@ static void mousevsc_on_receive_device_info(struct mousevsc_dev *input_device,
        if (!input_device->hid_desc)
                goto cleanup;
 
-       input_device->report_desc_size = desc->desc[0].wDescriptorLength;
+       input_device->report_desc_size = le16_to_cpu(
+                                       desc->desc[0].wDescriptorLength);
        if (input_device->report_desc_size == 0) {
                input_device->dev_info_status = -EINVAL;
                goto cleanup;
@@ -217,7 +218,7 @@ static void mousevsc_on_receive_device_info(struct mousevsc_dev *input_device,
 
        memcpy(input_device->report_desc,
               ((unsigned char *)desc) + desc->bLength,
-              desc->desc[0].wDescriptorLength);
+              le16_to_cpu(desc->desc[0].wDescriptorLength));
 
        /* Send the ack */
        memset(&ack, 0, sizeof(struct mousevsc_prt_msg));