Your patch has the same problem as Oles for me. It stops after
"radeonfb: resumed !". If I press a key then, it proceedes.

Stopping tasks: ==========================|
radeonfb: suspending to state: 3...
 hwsleep-0312 [245] acpi_enter_sleep_state: Entering sleep state [S3]
Back to C!
PCI: Found IRQ 5 for device 0000:00:1f.2
PCI: Setting latency timer of device 0000:00:1f.2 to 64
PCI: Found IRQ 11 for device 0000:00:1f.4
PCI: Setting latency timer of device 0000:00:1f.4 to 64
PCI: Found IRQ 11 for device 0000:00:1f.5
PCI: Sharing IRQ 11 with 0000:00:1f.3
PCI: Sharing IRQ 11 with 0000:00:1f.6
PCI: Sharing IRQ 11 with 0000:02:00.1
PCI: Setting latency timer of device 0000:00:1f.5 to 64
radeonfb: resumed !
e100: eth0: e100_watchdog: link up, 100Mbps, full-duplex
Restarting tasks... done