Re: [PATCH] i2c: tegra-bpmp: ignore DMA safe buffer flag
From: Ben Dooks <hidden>
Date: 2021-01-11 15:05:34
Also in:
linux-tegra, lkml, stable
On 11/01/2021 14:27, Mikko Perttunen wrote:
quoted hunk ↗ jump to hunk
From: Muhammed Fazal <redacted> Ignore I2C_M_DMA_SAFE flag as it does not make a difference for bpmp-i2c, but causes -EINVAL to be returned for valid transactions. Signed-off-by: Muhammed Fazal <redacted> Cc: stable@vger.kernel.org # v4.19+ Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> --- This fixes failures seen with PMIC probing tools on Tegra186+ boards. drivers/i2c/busses/i2c-tegra-bpmp.c | 3 +++ 1 file changed, 3 insertions(+)diff --git a/drivers/i2c/busses/i2c-tegra-bpmp.c b/drivers/i2c/busses/i2c-tegra-bpmp.c index ec7a7e917edd..998d4b21fb59 100644 --- a/drivers/i2c/busses/i2c-tegra-bpmp.c +++ b/drivers/i2c/busses/i2c-tegra-bpmp.c@@ -80,6 +80,9 @@ static int tegra_bpmp_xlate_flags(u16 flags, u16 *out) flags &= ~I2C_M_RECV_LEN; } + if (flags & I2C_M_DMA_SAFE) + flags &= ~I2C_M_DMA_SAFE; +
Just a comment, you can do without the test here. Just doing this would have been fine: flags &= ~I2C_M_DMA_SAFE; -- Ben Dooks http://www.codethink.co.uk/ Senior Engineer Codethink - Providing Genius https://www.codethink.co.uk/privacy.html