3c8326d3d8
Some machine BIOSes use the I2C bus and leave it in a state that causes interrupts to not work properly due to a pending interrupt having been latched. Refactor the code a bit to clear pending interrupts when I2C is enabled. This fixes the primary problem. Also fix a possible race condition in the interrupt handler where the interrupt was being cleared after reading the status instead of before. Reported by: pfg Reviewed by: jhb Approved by: jhb Obtained from: DragonFly BSD Differential Revision: https://reviews.freebsd.org/D6586 |
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ig4_iic.c | ||
ig4_pci.c | ||
ig4_reg.h | ||
ig4_var.h |