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net: sfp: return the number of written bytes for smbus single byte access

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We expect the SFP write accessors to return the number of written bytes.
We fail to do so for single-byte smbus accesses, which may cause errors
when setting a module's high-power state and for some cotsworks modules.

Let's return the amount of written bytes, as expected.

Fixes: 7662abf4db ("net: phy: sfp: Add support for SMBus module access")
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20260105151840.144552-1-maxime.chevallier@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Maxime Chevallier 2026-01-05 16:18:39 +01:00 committed by Jakub Kicinski
parent e5c8eda39a
commit 13ff3e7242
1 changed files with 1 additions and 1 deletions
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2
drivers/net/phy/sfp.c
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@ -765,7 +765,7 @@ static int sfp_smbus_byte_write(struct sfp *sfp, bool a2, u8 dev_addr,
dev_addr++;
}
return 0;
return data - (u8 *)buf;
}
static int sfp_i2c_configure(struct sfp *sfp, struct i2c_adapter *i2c)