From de773b6d3d90f90b53dac0e5e36d2031b5cd21f3 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 commit f4e3f4ae1d9c9330de355f432b69952e8cef650c upstream. 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 Signed-off-by: Greg Kroah-Hartman Signed-off-by: Yang Yingliang --- 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 60c8561fbe65..ef13b6ce9d8d 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -832,7 +832,7 @@ static const struct i2c_algorithm tegra_i2c_algo = { /* payload size is only 12 bit */ static const struct i2c_adapter_quirks tegra_i2c_quirks = { .max_read_len = 4096, - .max_write_len = 4096, + .max_write_len = 4096 - 12, }; static const struct tegra_i2c_hw_feature tegra20_i2c_hw = { -- GitLab