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This is part of the workaround for AM35x advisory Advisory 1.1.20. The advisory says that the IPSS bridge can't handle 8 & 16 bit read access. An 8bit read access to MUSB_POWER results in an 32bit read access which also reads INTRTX and therefore may lose interrupts. This patch tries to minimize reads to MUSB_POWER and perform them only when required. Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: NFelipe Balbi <balbi@ti.com>
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