mv643xx_eth: mp->tx_desc_count needs spinlock protection
mv643xx_eth: mp->tx_desc_count needs spinlock protection

mv643xx_eth_start_xmit() should check mp->tx_desc_count only
inside the mp->lock spinlock.

Signed-off-by: Lennert Buytenhek <8858498612e3a522354216649776e3032dcb7e5b@marvell.com>
Reviewed-by: Tzachi Perelstein <97d2002e6988c0eb83f52e51e8b3e77b046a902c@marvell.com>
Signed-off-by: Dale Farnsworth <80b24d51bbcd1ba9a2ce6b5fe97e28c44f9ff374@farnsworth.org>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas