tree 368a10f49fae6386d201154b6a628cf7b4c01e67
parent 8508d5653f4ca25cd13f87340121afdfed448e1b
author Mischa Jonker <mjonker@synopsys.com> 1377856585 +0200
committer Vineet Gupta <vgupta@synopsys.com> 1378357272 +0530

ARC: Fix __udelay calculation

Cast usecs to u64, to ensure that the (usecs * 4295 * HZ)
multiplication is 64 bit.

Initially, the (usecs * 4295 * HZ) part was done as a 32 bit
multiplication, with the result casted to 64 bit. This led to some bits
falling off, causing a "DMA initialization error" in the stmmac Ethernet
driver, due to a premature timeout.

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>