From 718dccb477e30233ab47ed6480decf7a95aae65c Mon Sep 17 00:00:00 2001 From: Sven Peter Date: Tue, 14 Sep 2021 16:02:33 +0200 Subject: [PATCH] usb: typec: tipd: Don't read/write more bytes than required tps6598x_block_read/write always read 65 bytes of data even when much less is required when I2C_FUNC_I2C is used. Reduce this to the correct number. Reviewed-by: Heikki Krogerus Signed-off-by: Sven Peter Link: https://lore.kernel.org/r/20210914140235.65955-1-sven@svenpeter.dev Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tipd/core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c index 21b3ae25c76d..c18ec3785592 100644 --- a/drivers/usb/typec/tipd/core.c +++ b/drivers/usb/typec/tipd/core.c @@ -123,7 +123,7 @@ tps6598x_block_read(struct tps6598x *tps, u8 reg, void *val, size_t len) if (!tps->i2c_protocol) return regmap_raw_read(tps->regmap, reg, val, len); - ret = regmap_raw_read(tps->regmap, reg, data, sizeof(data)); + ret = regmap_raw_read(tps->regmap, reg, data, len + 1); if (ret) return ret; @@ -145,7 +145,7 @@ static int tps6598x_block_write(struct tps6598x *tps, u8 reg, data[0] = len; memcpy(&data[1], val, len); - return regmap_raw_write(tps->regmap, reg, data, sizeof(data)); + return regmap_raw_write(tps->regmap, reg, data, len + 1); } static inline int tps6598x_read16(struct tps6598x *tps, u8 reg, u16 *val)