From 97140342e69d479a3ad82bfd4c154c0b08fe3eea Mon Sep 17 00:00:00 2001 From: David Brownell Date: Mon, 14 Jul 2008 22:38:25 +0200 Subject: i2c: Bus drivers return -Errno not -1 Tighten error paths used by various i2c adapters (mostly x86) so they return real fault/errno codes instead of a "-1" (which is most often interpreted as "-EPERM"). Build tested, with eyeball review. One minor initial goal is to have adapters consistently return the code "-ENXIO" when addressing a device doesn't get an ACK response, at least in the probe paths where they are already good at stifling related logspam. Signed-off-by: David Brownell Signed-off-by: Jean Delvare --- drivers/i2c/algos/i2c-algo-bit.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/i2c/algos') diff --git a/drivers/i2c/algos/i2c-algo-bit.c b/drivers/i2c/algos/i2c-algo-bit.c index 35812823787..eb8f72ca02f 100644 --- a/drivers/i2c/algos/i2c-algo-bit.c +++ b/drivers/i2c/algos/i2c-algo-bit.c @@ -320,7 +320,7 @@ static int try_address(struct i2c_adapter *i2c_adap, unsigned char addr, int retries) { struct i2c_algo_bit_data *adap = i2c_adap->algo_data; - int i, ret = -1; + int i, ret = 0; for (i = 0; i <= retries; i++) { ret = i2c_outb(i2c_adap, addr); @@ -508,7 +508,7 @@ static int bit_doAddress(struct i2c_adapter *i2c_adap, struct i2c_msg *msg) addr ^= 1; ret = try_address(i2c_adap, addr, retries); if ((ret != 1) && !nak_ok) - return -EREMOTEIO; + return -ENXIO; } return 0; -- cgit v1.2.3