[PATCH] ia64: infinite loop in ia64_mca_wakeup_ipi_wait
This bugfix has been hiding inside the MCA TLB patches. There is an infinite loop in ia64_mca_wakeup_ipi_wait() because the compiler optimizes away the test at the bottom of the while loop. It does this because IA64_MCA_WAKEUP_VECTOR is 0xf0, so irr_bit is known to be the constant 0x30, a.k.a. 48 in decimal. So when the compiler looks at the expression: It observes that 1' as unsigned long.
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