Re: [PATCH v2] i2c: at91: use dma safe buffers

From: Michael Walle
Date: Mon May 02 2022 - 17:36:38 EST


Am 2022-04-07 17:08, schrieb Michael Walle:
The supplied buffer might be on the stack and we get the following error
message:
[ 3.312058] at91_i2c e0070600.i2c: rejecting DMA map of vmalloc memory

Use i2c_{get,put}_dma_safe_msg_buf() to get a DMA-able memory region if
necessary.

Fixes: 60937b2cdbf9 ("i2c: at91: add dma support")
Signed-off-by: Michael Walle <michael@xxxxxxxx>
Reviewed-by: Codrin Ciubotariu <codrin.ciubotariu@xxxxxxxxxxxxx>

Wolfgang, will you pick this one?

-michael