IB/qib: Clear 6120 hardware error register
The hardware error register needs to be cleared or another interrupt will be generated, thus causing an infinite loop. This is a regression introduced when removing debug output. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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@ -1355,8 +1355,7 @@ static int qib_6120_bringup_serdes(struct qib_pportdata *ppd)
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hwstat = qib_read_kreg64(dd, kr_hwerrstatus);
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if (hwstat) {
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/* should just have PLL, clear all set, in an case */
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if (hwstat & ~QLOGIC_IB_HWE_SERDESPLLFAILED)
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qib_write_kreg(dd, kr_hwerrclear, hwstat);
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qib_write_kreg(dd, kr_hwerrclear, hwstat);
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qib_write_kreg(dd, kr_errclear, ERR_MASK(HardwareErr));
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}
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