[PATCH 2/2] i2c: imx-lpi2c: check only for enabled interrupt flags

[Wolfram Sang]

On Mon, Jan 30, 2023 at 04:32:47PM +0100, Alexander Stein wrote:
> When reading from I2C, the Tx watermark is set to 0. Unfortunately the
> TDF (transmit data flag) is enabled when Tx FIFO entries is equal or less
> than watermark. So it is set in every case, hence the reset default of 1.
> This results in the MSR_RDF _and_ MSR_TDF flags to be set thus trying
> to send Tx data on a read message.
> Mask the IRQ status to filter for wanted flags only.
> 
> Fixes: a55fa9d0e42e ("i2c: imx-lpi2c: add low power i2c bus driver")
> Signed-off-by: Alexander Stein <alexander.stein at ew.tq-group.com>

Applied to for-current, thanks!

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