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19 lines
522 B
Diff
19 lines
522 B
Diff
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--- a/drivers/net/gianfar.c
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+++ b/drivers/net/gianfar.c
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@@ -334,7 +334,14 @@ static int gfar_probe(struct of_device *
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/* We need to delay at least 3 TX clocks */
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udelay(2);
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- tempval = (MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
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+ /*
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+ * Do not enable flow control on chips earlier than rev 1.1,
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+ * because of the eTSEC27 erratum
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+ */
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+ tempval = 0;
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+ if (mfspr(SPRN_SVR) & 0xffff >= 0x0011)
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+ tempval = (MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
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+
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gfar_write(&priv->regs->maccfg1, tempval);
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/* Initialize MACCFG2. */
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