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staging: most: fix MAC address representation

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This patch fixes the representation of the MAC address within the HDM USB
module.

Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Christian Gromm 2015-09-28 17:18:41 +02:00 committed by Greg Kroah-Hartman
parent c31d9d12ef
commit 1ea7e502c4
1 changed files with 16 additions and 8 deletions
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24
drivers/staging/most/hdm-usb/hdm_usb.c
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@ -790,29 +790,37 @@ exit:
static int hdm_update_netinfo(struct most_dev *mdev)
{
struct device *dev = &mdev->usb_device->dev;
int i;
u16 link;
u8 addr[6];
u16 hi, mi, lo, link;
if (!is_valid_ether_addr(mdev->hw_addr)) {
if (0 > drci_rd_reg(mdev->usb_device,
DRCI_REG_HW_ADDR_HI, addr)) {
DRCI_REG_HW_ADDR_HI, &hi)) {
dev_err(dev, "Vendor request \"hw_addr_hi\" failed\n");
return -1;
}
le16_to_cpus(&hi);
if (0 > drci_rd_reg(mdev->usb_device,
DRCI_REG_HW_ADDR_MI, addr + 2)) {
DRCI_REG_HW_ADDR_MI, &mi)) {
dev_err(dev, "Vendor request \"hw_addr_mid\" failed\n");
return -1;
}
le16_to_cpus(&mi);
if (0 > drci_rd_reg(mdev->usb_device,
DRCI_REG_HW_ADDR_LO, addr + 4)) {
DRCI_REG_HW_ADDR_LO, &lo)) {
dev_err(dev, "Vendor request \"hw_addr_low\" failed\n");
return -1;
}
le16_to_cpus(&lo);
mutex_lock(&mdev->io_mutex);
for (i = 0; i < 6; i++)
mdev->hw_addr[i] = addr[i];
mdev->hw_addr[0] = hi >> 8;
mdev->hw_addr[1] = hi;
mdev->hw_addr[2] = mi >> 8;
mdev->hw_addr[3] = mi;
mdev->hw_addr[4] = lo >> 8;
mdev->hw_addr[5] = lo;
mutex_unlock(&mdev->io_mutex);
}