From f4e3f4ae1d9c9330de355f432b69952e8cef650c Mon Sep 17 00:00:00 2001 From: Sowjanya Komatineni Date: Tue, 12 Feb 2019 11:06:44 -0800 Subject: [PATCH] i2c: tegra: fix maximum transfer size Tegra186 and prior supports maximum 4K bytes per packet transfer including 12 bytes of packet header. This patch fixes max write length limit to account packet header size for transfers. Cc: stable@vger.kernel.org # 4.4+ Reviewed-by: Dmitry Osipenko Signed-off-by: Sowjanya Komatineni Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-tegra.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index a46446dbc48a..036cab795426 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -901,7 +901,7 @@ static const struct i2c_algorithm tegra_i2c_algo = { static const struct i2c_adapter_quirks tegra_i2c_quirks = { .flags = I2C_AQ_NO_ZERO_LEN, .max_read_len = 4096, - .max_write_len = 4096, + .max_write_len = 4096 - 12, }; static const struct i2c_adapter_quirks tegra194_i2c_quirks = { -- 2.30.2