spi: pxa2xx: limit reaches -1
spi: pxa2xx: limit reaches -1

On line 944 the return value of flush() is considered as a boolean,
but limit reaches -1 upon timeout which evaluates to true.

On 540, 594, 720 the same occurs for wait_ssp_rx_stall()
On 536 the same occurs for wait_dma_channel_stop()

Signed-off-by: Roel Kluin <aa9c6213291cec1ff07688554fb7b904b9ffe4e3@gmail.com>
Acked-by: Eric Miao <e9e0335ae43eee51396737d09983d9b25d00e51e@marvell.com>
Cc: David Brownell <e543181633fc0fc2787945ef377537d9112d0c96@pacbell.net>
Cc: Russell King <c2093e01fa868776d7876ac617ce6d2ac30cb904@arm.linux.org.uk>
Signed-off-by: Andrew Morton <5c1e68b099950c134891f0b6e179498a8ebe9cf9@linux-foundation.org>
Signed-off-by: Linus Torvalds <69652caca27c8b940640ad396ab71f93cacec34f@linux-foundation.org>

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