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Commit f0ac131a authored by Sonic Zhang's avatar Sonic Zhang Committed by Ben Dooks
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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: default avatarSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
Signed-off-by: default avatarBen Dooks <ben-linux@fluff.org>
parent be2f80f0

drivers/i2c/busses/i2c-bfin-twi.c

+7 −11
Original line number Diff line number Diff line
@@ -159,18 +159,14 @@ static void bfin_twi_handle_interrupt(struct bfin_twi_iface *iface, 
		if (mast_stat & BUFWRERR)

			dev_dbg(&iface->adap.dev, "Buffer Write Error\n");



		/* if both err and complete int stats are set, return proper

		 * results.

		 */

		if (twi_int_status & MCOMP) {

		/* If it is a quick transfer, only address without data,

		 * not an err, return 1.

			 * If address is acknowledged return 1.

		 */

			if ((iface->writeNum == 0 && (mast_stat & BUFRDERR))

				|| !(mast_stat & ANAK))

		if (iface->cur_mode == TWI_I2C_MODE_STANDARD &&

			iface->transPtr == NULL &&

			(twi_int_status & MCOMP) && (mast_stat & DNAK))

			iface->result = 1;

		}



		complete(&iface->complete);

		return;

	}