| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.4 01/86] i2c: bpmp-tegra: Ignore unknown I2C_M flags | Date | Mon, 25 Jan 2021 19:38:43 +0100 |
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From: Mikko Perttunen <mperttunen@nvidia.com>
commit bc1c2048abbe3c3074b4de91d213595c57741a6b upstream.
In order to not to start returning errors when new I2C_M flags are added, change behavior to just ignore all flags that we don't know about. This includes the I2C_M_DMA_SAFE flag that already exists but causes -EINVAL to be returned for valid transactions.
Cc: stable@vger.kernel.org # v4.19+ Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Wolfram Sang <wsa@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/i2c/busses/i2c-tegra-bpmp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/i2c/busses/i2c-tegra-bpmp.c +++ b/drivers/i2c/busses/i2c-tegra-bpmp.c @@ -80,7 +80,7 @@ static int tegra_bpmp_xlate_flags(u16 fl flags &= ~I2C_M_RECV_LEN; } - return (flags != 0) ? -EINVAL : 0; + return 0; } /**
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