d782f33df7
While testing the genirq code on ARM, a condition was found whereby the Neponset IRQ handler was being re-entered, causing the system to deadlock. Under the ARM IRQ code, this would not have been a visible problem because the "simple" IRQ handling had no re-entrancy protection. Resolve this by acknowledging the parent interrupt after we mask it when we are going to handle one of our "special" level-based sources (from ethernet or USAR chip.) Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> |
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