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| author | Sowjanya Komatineni <skomatineni@nvidia.com> | 2019-02-12 22:06:44 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-23 22:10:05 +0300 |
| commit | 5f9614d0540b35b018a4ddb21d1a184e098f6758 (patch) | |
| tree | 9e9a758ef639cc444ef83ad1941743e0eebd6bd7 /drivers/i2c | |
| parent | 25970b517db1a6a12ca410c20321c6160d70f07a (diff) | |
| download | linux-5f9614d0540b35b018a4ddb21d1a184e098f6758.tar.xz | |
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 <digetx@gmail.com>
Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-tegra.c | 2 |
1 files changed, 1 insertions, 1 deletions
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 = { |