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i2c-bfin-twi: return completion in interrupt for smbus quick transfers
A smbus quick transfer has no data after the address byte. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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1 changed files with 7 additions and 11 deletions
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@ -159,18 +159,14 @@ static void bfin_twi_handle_interrupt(struct bfin_twi_iface *iface,
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if (mast_stat & BUFWRERR)
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dev_dbg(&iface->adap.dev, "Buffer Write Error\n");
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/* if both err and complete int stats are set, return proper
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* results.
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/* If it is a quick transfer, only address without data,
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* not an err, return 1.
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*/
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if (twi_int_status & MCOMP) {
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/* If it is a quick transfer, only address without data,
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* not an err, return 1.
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* If address is acknowledged return 1.
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*/
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if ((iface->writeNum == 0 && (mast_stat & BUFRDERR))
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|| !(mast_stat & ANAK))
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iface->result = 1;
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}
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if (iface->cur_mode == TWI_I2C_MODE_STANDARD &&
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iface->transPtr == NULL &&
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(twi_int_status & MCOMP) && (mast_stat & DNAK))
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iface->result = 1;
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complete(&iface->complete);
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return;
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}
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